Technical Discussion

How to check For File Lock (File in use) in C#?

noreply@blogger.com (Ketan Patel) — Fri, 06 Jan 2012 01:15:57 PST

Hello Friend's

Wish you a very happy new year. Hope you will be enjoy a lots in New Year.

In one of my project I have required to check whether file is in use or it’s available for writing.
There is no direct way in c# for checking file lock as per my knowledge.
But I had done this task in other way however this is not a good way but I have no option for this.
Look at below code.

       


  public void OperationWithFile()
        {
            string filepath = "D:\\Test.xlsm";
            if(FileInUse(filepath) == false)
                MessageBox.Show("You can't operform operation. File already in Use");
            
        }

        private bool FileInUse(string path)
        {
            try
            {
                //if file is not lock then below statement will successfully executed otherwise it's goes to catch.
                using (FileStream fs = new FileStream(path, FileMode.OpenOrCreate))
                {
                }
                return false;
            }
            catch (IOException ex)
            {
                    return true;
                
            }
        }

Code is self explanatory hope you easily understand it.

If you have any doubt then let me know.

Enjoy!!!

How to Add Progress bar in windows application ?

noreply@blogger.com (Ketan Patel) — Fri, 06 Jan 2012 01:02:08 PST

Hello Friend’s

In this article I am going to explain how to add progress bar in windows application.

In web application, we have much option and having third party controls too. Like

RadControls , NetAdvantages controls etc.. But in windows application, there is no straight way to add progress bar as per my thinking. In this article I am going to give one small example so you can implement into your application.

First Make one application and in one Form put below controls.

1.) Button (on clicking button we display progress Bar)

2.) Picture box (option to display Loading Image)

3.) Label (give appropriate message to user like Please wait….)


public partial class KetanProgressBar : Form

    {

        private BackgroundWorker bgworker;

        delegate void SetControlValueCallback(Control oControl, string propName, object propValue);



        public KetanProgressBar()

        {

            InitializeComponent();

        }



        private void Form1_Load(object sender, EventArgs e)

        {

            bgworker = new BackgroundWorker();



            bgworker.WorkerSupportsCancellation = true;

            bgworker.WorkerReportsProgress = true;

            bgworker.DoWork += bwMC_DoWork;

            bgworker.ProgressChanged += bwMC_ProgressChanged;

            bgworker.RunWorkerCompleted += bwMC_RunWorkerCompleted;

        }

        private void bwMC_ProgressChanged(object sender, ProgressChangedEventArgs e)

        {

            SetControlPropertyValue(pictureBox1, "Visible", true);

            SetControlPropertyValue(lblWait, "Visible", true);

        }

        private void bwMC_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)

        {

            if(!e.Cancelled)

            {

                SetControlPropertyValue(lblWait, "Visible", false);

                SetControlPropertyValue(pictureBox1, "Visible", false);

                MessageBox.Show("Action Completed", "Confirmation", MessageBoxButtons.OK, MessageBoxIcon.Information);

            }



        }

        private void SetControlPropertyValue(Control oControl, string propName, object propValue)

        {

            if (oControl.InvokeRequired)

            {

                SetControlValueCallback d = new SetControlValueCallback(SetControlPropertyValue);

                oControl.Invoke(d, new object[] { oControl, propName, propValue });

            }

            else

            {

                Type t = oControl.GetType();

                PropertyInfo[] props = t.GetProperties();

                foreach (PropertyInfo p in props)

                {

                    if (p.Name.ToUpper() == propName.ToUpper())

                    {

                        p.SetValue(oControl, propValue, null);

                    }

                }

            }

        }

        private void bwMC_DoWork(object sender, DoWorkEventArgs e)

        {

            bgworker.ReportProgress(1);

            //just for test we make looping so progressbar will display.

            for (int i = 0; i <= 100000000; i++)

            { }

            

        }



        private void button1_Click(object sender, EventArgs e)

        {

            bgworker.RunWorkerAsync();

            Application.DoEvents();

        }

I think all statements are self explanatory. There is no need to explain. If you have any doubt in any statement then let me know.

Enjoy !!!!!!

Excel header print setting (repeat header content’s on every page during printing) using C#.Net

noreply@blogger.com (Ketan Patel) — Fri, 06 Jan 2012 01:01:41 PST

Excel header print setting (repeat header content’s on every page during printing) using C#.Net

Hello friend's

When we create excel file from C# there may be need to repeat some part’s when we printing.

See below code bloack to set it from C#.

Microsoft.Office.Interop.Excel.Application xlApp;

Microsoft.Office.Interop.Excel.Workbook xlWorkBook;

Microsoft.Office.Interop.Excel.Worksheet xlWorkSheet;

object misValue = System.Reflection.Missing.Value;

Microsoft.Office.Interop.Excel.Range chartRange;

xlApp = new app.Application();

xlWorkBook = xlApp.Workbooks.Add(misValue);

xlWorkSheet = (Microsoft.Office.Interop.Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);

xlWorkSheet.PageSetup.PrintTitleRows = "R1:R11";

// Repeat Rows from R1 to R11 for every page

xlWorkSheet.PageSetup.PaperSize = app.XlPaperSize.xlPaperLegal;

// Printer Page Size.

xlWorkSheet.PageSetup.Zoom = false;

xlWorkSheet.PageSetup.FitToPagesWide = 1;

xlWorkSheet.PageSetup.FitToPagesTall = 4;

//Set Content according to Page Width and Height. This is important factor if you want to Print Proper documents.

xlWorkSheet.PageSetup.LeftMargin = 0;

xlWorkSheet.PageSetup.RightMargin = 0;

xlWorkSheet.PageSetup.TopMargin = 0.25;

xlWorkSheet.PageSetup.BottomMargin = 0.25;

xlWorkSheet.PageSetup.Orientation = Microsoft.Office.Interop.Excel.XlPageOrientation.xlLandscape;

that's sit.

Let me know if have any problem.

Enjoy !!!!!

Create/Format Excel File From C#.Net

Create/Format Excel File From C#.Net

noreply@blogger.com (Ketan Patel) — Thu, 10 Nov 2011 00:29:42 PST

Create/Format Excel File From C#.Net

Hello Friend’s

In this article I am going to share “How to create excel file from C# and How to format that Excel file”

1.) Microsoft.Office.InterPro.Excel namespace use to create excel file.

2.) If this name space does not exists in your solution then add it from add reference.

3.) Create Excel Application, Worksheet and Workbook Object as given in below example.

Microsoft.Office.Interop.Excel.Application xlApp;

Microsoft.Office.Interop.Excel.Workbook xlWorkBook;

Microsoft.Office.Interop.Excel.Worksheet xlWorkSheet;

Microsoft.Office.Interop.Excel.Range chartRange;

object misValue = System.Reflection.Missing.Value;

xlApp = new app.Application();

xlWorkBook = xlApp.Workbooks.Add(misValue);
xlWorkSheet = (Microsoft.Office.Interop.Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);

Purpose of misValue object :: if we do not pass the parameter then we can use misValue object.

Now let’s play with excel.

4.) Below statement write my name to Excel file and also Border around it so its look cool.

xlWorkSheet.Cells[6, 3] = "My Name";

xlWorkSheet.Cells[6, 4] = “Ketan”

xlWorkSheet.get_Range("d6", "g6").Merge(true);

xlWorkSheet.get_Range("d6", "g6").BorderAround(Microsoft.Office.Interop.Excel.XlLineStyle.xlContinuous, Microsoft.Office.Interop.Excel.XlBorderWeight.xlMedium, Microsoft.Office.Interop.Excel.XlColorIndex.xlColorIndexAutomatic, Microsoft.Office.Interop.Excel.XlColorIndex.xlColorIndexAutomatic);

5.) Now suppose I want to give some header in excel file. For that Look at below statement.

xlWorkSheet.get_Range("a14", "l14").Merge(false);

chartRange = xlWorkSheet.get_Range("a14", "l14");

chartRange.FormulaR1C1 = "I am Heading";

chartRange.HorizontalAlignment = 3;

chartRange.BorderAround(true);

Above statements merge Excel cells and write statement in it.

6.) Continue in this Way. Decide your content position by taking excel positioning in mind. When we write from C# to excel one main point to remember is Column consider from A-Z (For more column repeat double letter like aa,ab etc..) and Rows is consider from 1-n.

7.) You can play with this. You can also create dynamic content in excel by using looping concept and some logic.

8.) Below statements set font name and size of excel file.

xlWorkSheet.Cells.Font.Size = 8;

xlWorkSheet.Cells.Font.Name = "Arial";

This two property comes with all cells so if you want to set different font and size for separate cell then you can achive using this properties.

9.) If you want to format excel cell content position, Alignment Property is there. Let’s look at below example.

xlWorkSheet.Cells[6, 4].HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignLeft;

xlWorkSheet.Row[9].HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignLeft;

xlWorkSheet.Cells.VerticalAlignment =

Microsoft.Office.Interop.Excel.XlVAlign.xlVAlignCenter;

First statement make cell content to Left alignment, second statement make full row to left alignment and third statement make Center vertical Alignment.

10.) You can also specify Width of the Excel Column.

xlWorkSheet.Columns[1].ColumnWidth = 4.0;

11.) Below statement set wrap property of excel cell.

xlWorkSheet.Cells[startingrow, 2].WrapText = true;

12.) Most of property which applicable to Cell we can also apply to Row(s) of excel.

13.) Now suppose you want to color one cell of excel.

xlWorkSheet.Cells[1, 1].Interior.Color = Color.Red;

This will fill red color in cell.

14.) Now save excel file to physical directory.

xlWorkBook.SaveAs(strFilepath, Microsoft.Office.Interop.Excel.XlFileFormat.xlOpenXMLWorkbookMacroEnabled);

String strFilePath is full path of excel which are going to create.

15.) Close the excel operation and release all the objects which are used.

xlWorkBook.Close(true, misValue, misValue);

xlApp.Quit();

System.Runtime.InteropServices.Marshal.ReleaseComObject(xlApp);

GC.Collect();

GC.WaitForPendingFinalizers();

if you have any question let me know.

Enjoy !!!!!!

Excel header print setting (repeat header content’s on every page during printing) using C#.Net

Maximum Request length exceeded

noreply@blogger.com (Ketan Patel) — Fri, 22 Apr 2011 04:30:04 PDT

Hello Frd's

Sometimes on production server there are maxrequest length increase to 4 megabyte.
4 megabyte request length by default set by asp.net.if request length is increase then we can get "Maximum request length exceeded" Error Message.

Solution :-

The reason behind this error is The file size exceeds the ASP.NET maximum request length restriction. By default this value is 4 megabytes.

if you want to support request greater then it then u need to
Increase limit in web.config file. open your web.config file and find below section and chnage the value.

< configuration >

    < system.web >
       < httpRuntime maxRequestLength="1048576" / >
   < /system.web >
< /configuration >

this will increase your request limit to 1 GB.

SQL In clause in LINQ (In LINQ operation like SQL In clause)

noreply@blogger.com (Ketan Patel) — Wed, 28 Jul 2010 09:03:23 PDT

Hello Frd's

There are most of situation arise when we required to used IN clause of sql in our LINQ technology.

But LINQ not directly provide IN clause.We have to manage it another way.Below are simple example which do same thing.(SQL IN Clause in LINQ Technology)

  public static string[] GetOpenStatusIDListForInQueryLinq()  
     {  
       using (ITILDataContext context = new ITILDataContext(Common.ConnectionString))  
       {  
         //operation which return list of all id as string array  
       }  
     }  
 // below method perform Count Operation using IN query in LINQ  
 public static int Perfrominoperation()  
     {  
       using (ITILDataContext context = new ITILDataContext(Common.ConnectionString))  
       {  
         var incidentobj = from incident in context.AllIncidents  
                  where GetOpenStatusIDListForInQueryLinq().Contains(incident.StatusID.ToString())  
                 select incident;  
         return incidentobj.Count();  
       }  
     }  
 //Above function return all Records which have a iD resides in a String array and same id  
 resides in a Tabke of AllIncidents

If you have any question or any suggestion please write in comment.

Enjoy !!!!!!!

LINQ to SQL :- Importent Method OnValidate

noreply@blogger.com (Ketan Patel) — Thu, 15 Jul 2010 04:02:53 PDT

LINQ to SQL :- Importent Method OnValidate

OnValidate is good method in linq to sql technology.

This Method allow to Do validation or set default entry which you want to do before Insert,Update or Delete.

Example of Such uses are :-

1.) Set Default Value While performing DML operation.

2.) If you want to Check Duplication Inserting then u can perform it here.

3.) While keeping autodelte,autoinserting,autoupdating u can perform any operation which required before insert,update or delete.

Convert HTML to Word Document using ASP.Net (C#)

noreply@blogger.com (Ketan Patel) — Thu, 15 Jul 2010 00:29:43 PDT

Hello Frd's

Find Below code to Convert HTML to Word Document using ASP.Net (C#).

 HttpContext.Current.Response.Clear();  
     HttpContext.Current.Response.Charset = "";  
     HttpContext.Current.Response.ContentType = "application/msword";  
     string strFileName = "GenerateDocumentfgfgfg" + ".doc";  
     HttpContext.Current.Response.AddHeader("Content-Disposition", "inline;filename=" + strFileName);  
     StringBuilder strHTMLContent = new StringBuilder();  
     strHTMLContent.Append(RadEditor1.Content); 
     -- RadEditor1.Content is HTML Text  I m taking it from editor.
 
     HttpContext.Current.Response.Write(strHTMLContent);  
     HttpContext.Current.Response.End();  
     HttpContext.Current.Response.Flush();

If you have any question write in comment box.

Enjoy !!!!!

Convert Word Document to HTML using ASP.Net (C#)

noreply@blogger.com (Ketan Patel) — Thu, 15 Jul 2010 00:28:28 PDT

Hello Frd's

Find Below Code to Convert Word Document to HTML using ASP.Net (C#).

  

Variable Declaration :-


     protected Microsoft.Office.Interop.Word.ApplicationClass objWord = new      
                                                         ApplicationClass();    
    protected string strPathToUpload; //Path to upload files "Uploaded"
    protected string strPathToConvert; //Path to convert uploaded files and save
    object fltDocFormat = 10; //For filtered HTML Output
    protected object missing = System.Reflection.Missing.Value;
    protected object readOnly = false; //Open file in readOnly mode
    protected object isVisible = false;//The process has to be in invisible mode


Actual Method :-


try  
     {  
       //To check the file extension if it is word document or something else  
       string strFileName = fUpload.FileName;  
       string[] strSep = fUpload.FileName.Split('.');  
       int arrLength = strSep.Length - 1;  
       string strExt = strSep[arrLength].ToString().ToUpper();  
       //Save the uploaded file to the folder  
       strPathToUpload = Server.MapPath("Upload");  
       //Map-path to the folder where html to be saved  
       strPathToConvert = Server.MapPath("Upload");  
       object FileName = strPathToUpload + "\\" + fUpload.FileName;  
       object FileToSave = strPathToConvert + "\\" + fUpload.FileName + ".htm";  
       if (strExt.ToUpper().Equals("DOC"))  
       {  
         fUpload.SaveAs(strPathToUpload + "\\" + fUpload.FileName);  
         lblMessage.Text = "File uploaded successfully";  
         //open the file internally in word. In the method all the parameters should be passed by object reference  
         objWord.Documents.Open(ref FileName, ref readOnly, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref isVisible, ref missing, ref missing, ref missing, ref missing, ref missing);  
         //Do the background activity  
         objWord.Visible = false;  
         Microsoft.Office.Interop.Word.Document oDoc = objWord.ActiveDocument;  
         oDoc.SaveAs(ref FileToSave, ref fltDocFormat, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing);  
         lblMessage.Text = fUpload.FileName + " converted to HTML successfully";  
       }  
       else  
       {  
         lblMessage.Text = "Invalid file selected!";  
       }  
       //Close/quit word  
       objWord.Quit(ref missing, ref missing, ref missing);  
     }  
     catch (Exception ex)  
     {  
       Response.Write(ex.Message);  
     }

If you have any question post in comment.

Enjoy !!!!!

Configure your website to use Membership provider feature.

noreply@blogger.com (Ketan Patel) — Sun, 27 Jun 2010 05:12:41 PDT

*** Configure your website to use Membership provider (aspnet_membership) feature ***.

Asp.net provides facility for inbuilt membership management and roles management. You find many article on it on google I am not going on details about t. but here I am discuss how to apply membership in out asp.net web application or web site

First you need to run below script. Download it and run in your database.

http://rapidshare.com/files/403147825/ASPNET_Membership.sql.html

Namespace: - System.Web.Security you have to include this namespace to use all method of aspnet membership provider.

Second you need to change your web.config section. Add below section in your web.config section.

(This will make your website Form Authentication Mode and Apply all setting which aspnetmembership required.)

forms>

authentication>

authorization>

providers>

membership>

providers>

roleManager>

Now you can use all Feature of memmbership Provier. Below are some basic methods which are used.

1. CreateUser :- Createuser method used to create a new user.

Membership.CreateUser Method (String, String)

MembershipUser user = Membership.CreateUser(UserId, password, email);

You not nees to write any other code. It’s manage by .net frame work.

2. MembershipUser user = Membership.GetUser(“userid”);

This method used to get all created member information.

3. Membership.DeleteUser(UserId, true);

This method used to delete specific userid from a database. Second argument used to delete all related records or not.

4. RoleProvider.CreateRole

This method is used to create a new role.

5. Roles.AddUserToRole

This method is used to assign role to user.

Roles.AddUserToRole("username", "roles");

6.  Roles.AddUsersToRole

This method used to assign several user to one role.

      Roles.AddUsersToRole(

      new string[] { "username1", "username2" }, "Roles");

7. MembershipProvider.ChangePassword

This method is used to update password for user.

Enjoy !!!! if you have any query then let me know......

how to make website for multi Language support in asp.net (Resource Example in asp.net)

noreply@blogger.com (Ketan Patel) — Sat, 29 May 2010 23:05:27 PDT

Hello Frd's

Here i am going to dicuss how to make multi support language in a asp.net.

In a asp.net multi support language supported build using resources.

there are two type of resouce in asp.net global resource and local resource we will dicuss resources later.

to build multi language support in a asp.net there are two classes are use :-

1. Culture and 2. UICulture.

Culture providing information related to Datetime,currency etc.. setting ofr multi langugaes. while UICulture are related to UI that means it's deal with a resources.

to set specified language in a web site you can give culturre setting in a globally web.config

< globalization uiCulture="es" culture="es-MX" / >"

Now lets see how to set multi language support from code behind.

Lets take one example :-

First Create One page Default2.aspx and suppose we want two language support in our application

Suppose English and Swedish language.

So create resource for both in a local resource.

hear kepp in mind the resources name and extension.
currently for English there are resource name is same as a page name.

Page name :- Default.aspx

Resource file Name :- Default.aspx.resx

For Swidden language.
Resource file Name :- Default.aspx.sv.resx

Now lets put one label on a page. and set meta:resourcekey

Now you have to set culture in Page_PreInit of a page. For better utilization you defaine it in a One base Page and Imherit other page from this basepage.

Where en-US values for English / United states some other language are as below.

Language = "German" Value="de-DE"

Language ="Spanish" Value="es-ES"

Language ="Swedish" Value="sv-SE"

Language ="United States - English" Value="en-US"
Now lets run the application

Now lets apply second langugae swidden.

Hop you getting.

if you hasve any query let me know

Enjoy !!!!!!!!!!!!!

Calendar Extender Problem When Control Set to Read only.

noreply@blogger.com (Ketan Patel) — Mon, 14 Dec 2009 22:24:43 PST

Problem: - Calendar Extender Problem When Control Set to Read only.

<asp:TextBox id="txtdate" runat="server" Width="229px" Enabled="False">

asp:TextBox>

<cc1:calendarextender id="Calendarextender1" runat="server" TargetControlID="txtdate" PopupButtonID="imgdate" Format="dd/MM/yyyy">

cc1:calendarextender>

Solution:-

When we using ajax calendar extender control we always need to set it property to Enable= True.

If you make enable=false then ajax control extender value you not getting at server Side. Below is reason for it.

When we set any Textbox Property to read only. its value can not process on a server side because of prevent of malicious data. How ever you can access that control on server side and perform operation which you want.But at server side you can not process value from textbox because of security reason.

Still if you want to make this working then Do one trick.

Make contentEditable="false" This work for you.

Unable to find a runtime version to run this application

noreply@blogger.com (Ketan Patel) — Wed, 18 Nov 2009 05:03:10 PST

Sometimes you find that you’re running application give message that “Unable to find a version of the runtime to run application”
This problem occurred when DLL of Software get corrupted it may be frame work corrupted or your project dll corrupted.
To solved this Problem first try to repair framework.
If then also error not solved then replace your dll and/or exe with fresh dll and/or exe.

This Solved your Problem

Print (Perform operation on) all Data of Gridview when AllowPaging=True

noreply@blogger.com (Ketan Patel) — Wed, 18 Nov 2009 05:01:00 PST

Hello Frd’s

There may be case when you want to print data from gridview.Here Problem is not with Printing but when allowpaging=true it’s only possible to perform operation on a data which exists in a given page.

But there are trick using which you can print or perform operation on all gridview data.First of on print button click make AllowPaging="False" after this again bind data with gridview and perform prinitng or what ever operation with all filed of gridview.

After your work finished agaain make AllowPaging="True"

If you want to manage checkbox value during paging then read below article.

http://dotnet-magic.blogspot.com/2008/09/maintain-checkbox-state-in-gridview.html

LINQ Advantages

noreply@blogger.com (Ketan Patel) — Mon, 16 Nov 2009 07:05:01 PST

Hello Frd's

Lets Discuss LINQ Advantages

In my point of view LINQ reduce my Data Access layer code.

Passing value to store procedure ,retrieve some parameters from store procedure is now easy for me.

Without linq i have to pass the parameters and doing all other stuff that required ... thanks to linq which reduce my that stuff and speeder my development.

sometime during development of old style code there are problem of data type miss match . but in linq it's check in build time wow ......

Please Cont your comments ........

Delete Temporary File From ASP.Net

noreply@blogger.com (Ketan Patel) — Mon, 10 Aug 2009 01:54:22 PDT

Hello Frd's

There are often required to delete temp file which created during asp.net pages hit.you can delete this temp files either mannualy or by coding.

to delete temp file using Coding follow the below Step.

Store Temp File Path in Session["pdfpath"]

Write below code in global.aspx

void Session_End(object sender, EventArgs e) {
if (System.IO.File.Exists(Session["pdfpath"].ToString()))System.IO.File.Delete(Session["pdfpath"].ToString()); }

in web.config
<sessionState mode="InProc" timeout="20">
sessionState>

this Code delete your temp file.

Please do not forgot to comment on articles.

'sys' is undefined

noreply@blogger.com (Ketan Patel) — Sat, 08 Aug 2009 04:34:28 PDT

Problem :- 'sys' is undefined

Solution :-

1. Sys undefined usually indicates that the framework scripts didn't load. In your case, you shouldn't drop the script files directly under the script path: there is versioning involved and the directory structure must be exactly what the script manager expects.
If you look at the html source code in the browser, you'll see what the expected url is for each script. You need to reproduce that directory structure on your server. The directory structure of the library as downloaded from the asp.net site should already be the right one.

2. There are many reasons for getting this error . Few of them i encountered were
1) Web.config not getting updated according to the AJAX enabled website requirement because most of us are using in existing application and trying to make it work and we miss few entries . Best option is to create an AJAX enabled website and put all the web.config entries into exixting application's web.config or put the exixting aplication web.config entries into newly created website web.config and replace the original one with new one.
2) If issue is not related to web.config then its possible that system is not allowing IIS to access the file system where the MicrosoftAjaxLibrary exists usually C: drive. In most of the production environment its not allowed so we need to make use of scriptpath attribute of scriptmanager and it may solve the issue as mentioned in above post where scripts folder is in ur website directory and all the ajaxlibrary java script files are copied into this folder.
3) Even after this it doesnt work then you need to look if the file can be accessible from client machine may be system configuration is not allowing to access it use HTTPWATCH or FIDDLER to see if 404 is coming if so then it has to do with system settings in my case it was ISAPI filter which was causing it and it was URLSCAN security tool which was not allowing it why because of MicrosoftAjaxLibrary contains the folder names which has DOTS(.) like System.Web.Extensions . So we need to modify the .ini file for urlscan security tool ISAPI filter. To do this you need to check if this filter is added in ur IIS if so then you need to go to WINDIR%\System32\Inetsrv\URLscan and edit th .ini file and make AllowDotInPath=1 this will solve the issue.
These were my analysis hope it helps . again i reiterate that there is no fix scenario why this errors comes.Different person can get same error for different reasons.

ASP.NET 2.0 - Accessing controls in the previous page

noreply@blogger.com (Ketan Patel) — Sat, 08 Aug 2009 04:11:17 PDT

One of the problems faced by us in ASP.NET 1.x versions is the inability to transfer data between pages easily. Since ASP.NET 1.x pages postback to the same page by default, and you cannot do a post to another page (unless you remove the runat="server" and other messy things), accessing the controls in the previous page becomes very difficult unlike classic ASP where you have a action tag to specify the new page and you can use the Request.Form to access the previous page values.
There is a more effective way of accessing the Controls in the previous page in ASP.NET 2.0. Its using the PreviousPage property of the Page.

Say we have a page Default.aspx with a Textbox "Text1" and a Button "Button1".

We can access the controls in Default.aspx from another page by the following steps:-

1. Setting the PostBackUrl property of the Button to the New Page, as follows:-

2. Then, in the NewPage.aspx.cs, you can access the TextBox control on Default.aspx as follows:-

public void page_load()
{
if(!IsPostBack)
{
TextBox tb = (TextBox)PreviousPage.FindControl("Text1");
Response.Write(tb.Text);}
}

Note that a new TextBox tb is declared and typecasted using the PreviousPage and FindControl of the ID of the Control in the Previous Page. However, to retain the value across postbacks within the new page, its better to assign the text to a TextBox or Label in the NewPage.aspx such that its value is not lost across postbacks. The reason behind is that, the PreviousPage becomes invalid once you postback in the same page.

We could still achieve this in ASP.NET 1.x versions by using the Server.Transfer but Server.Transfer has other undesirable effects like URL not updated in the browser and limitation within the application etc.,

Note :- This artical taken from http://forums.asp.net

Showing a modal dialog box or form when the application is not running in UserInteractive mode is not a valid operation. Specify the ServiceNotification or DefaultDesktopOnly style to display a notification from a service application

noreply@blogger.com (Ketan Patel) — Sat, 18 Jul 2009 21:32:53 PDT

Problem :-

"Showing a modal dialog box or form when the application is not running in UserInteractive mode is not a valid operation. Specify the ServiceNotification or DefaultDesktopOnly style to display a notification from a service application"

Solution :-

This type of error msg you get when you are using Windows dialog box (Message box) to display message in it.

if you are running application from local you not getting this error message but when you run this application form network you get this error msg.This because when you use windows message box it's interact with current running windows and for interaction windows required adminsistrator or Similar type prevailing user . instead of this use label to Print error or use java script alert or confirm.

please reader write when you get this error msg in below comment box.

Export Data in Word document from ASP.Net With Formating

noreply@blogger.com (Ketan Patel) — Sat, 11 Jul 2009 09:02:22 PDT

Hello Frd's

It's easy task to Export Data in Word Document from asp.Net . look at below code.This Code Export Data in Word Document With Bold,Color ect ... Feature Whatever you do with HTML Table Data.

   Response.Clear();
   Response.Buffer = true;
   Response.AddHeader("content-disposition", "attachment;filename=Adfield.doc");
   Response.Charset = "";
   Response.ContentType = "application/vnd.ms-word ";

   //txtad.Value = str;
   StringWriter sw = new StringWriter();
   HtmlTextWriter hw = new HtmlTextWriter(sw);
   HtmlForm fr = new HtmlForm();
   HtmlTable TLB = new HtmlTable();
   TLB.Style.Add("Border-width", "1px");
   HtmlTableRow hdr = new HtmlTableRow();
   HtmlTableCell cell = new HtmlTableCell();

   // Take data From Database and Write with format

      hdr = new HtmlTableRow();
   cell = new HtmlTableCell();
   cell.Style.Add("BACKGROUND-COLOR", "Gainsboro");
   cell.InnerHtml = "Client Name";
   hdr.Cells.Add(cell);
   cell = new HtmlTableCell();
   cell.InnerHtml ="";
   hdr.Cells.Add(cell);
   TLB.Rows.Add(hdr);

   //At last

        fr.Controls.Add(TLBdetail);
   this.Controls.Add(fr);
   fr.RenderControl(hw);
   Response.Output.Write(sw.ToString());
   Response.Flush();
   Response.End();

Error 1 Unable to find manifest signing certificate in the certificate store.

noreply@blogger.com (Ketan Patel) — Fri, 10 Jul 2009 01:36:18 PDT

Problem :-
Unable to find manifest signing certificate in the certificate store.

Solution :-

Go to Project menu then Property of the Project

Now Click on a Signing
And See there are Check box with Label Sign the ClickOnce manifests

Uncheck this Check Box.

Now error Gone ...
Enjoy !!!!!!!!!!

Where to Buy Domain name

noreply@blogger.com (Ketan Patel) — Thu, 09 Jul 2009 08:42:43 PDT

Every web master has a question from where to buy a domain name. Now a day domain booking is a normal process some booked domain for their business, some booked for personal use, some booked for social activity.

For any reason every day there are thousands of domain name booked every day. There are lots of domain Provider site which booked our domain name but necessary thing is payment and billing address. For that I am always follow godaddy.com. godaddy.com booked my domain name within a minutes.

I am not suggesting godaddy.com because of it is famous in word but it is one of greater solution for domain and space. They provide Support also very fast and answer goes to our
Solution.

I am always prefer it if you have any other then post on a comment with feature they provide and facility.

Search Result

noreply@blogger.com (Ketan Patel) — Sun, 12 Jul 2009 06:38:33 PDT

What is MVC (Model view Controller)

noreply@blogger.com (Ketan Patel) — Wed, 08 Jul 2009 07:49:23 PDT

MVC is framework methodology that divides application into three components roles.

Model

View

And Controller

1. Model

Model in MVC based application are component which maintain the state. Often this state is persisted inside a database.

2. Views

Views in the MVC based application are the components responsible for displaying the application user interface.

3. Controllers

Controllers in MVC based application are the components responsible for handling end user interaction, manipulating the model and ultimately choosing a view to render to display UI. In MVC view is only to displaying information it is controller that handles and response to user input and interaction.

The Basic Diagram for MVC can be given by

Problem With margin in different Browser (Chrome,Safari,Firefox,IE)

noreply@blogger.com (Ketan Patel) — Wed, 10 Jun 2009 00:13:33 PDT

Hello Frd’s there are Problem with Different Browser if we give margin in Control.

I have Solution for it.

I also give articles provided by http://www.w3.org/ .It’s nice article I love it.

Margin not makes Problem in IE and FF. It’s Work fine but for Chrome

And Safari its make Problem margin not set for controls.

Before we go for article set Body of your Page Margin to 0

“<body style="margin-left: 0; margin-right: 0; margin-top: 5px; margin-bottom: 0; background-color: #FFEED9;">”

Horizontal margins never collapse.
Vertical margins may collapse between certain boxes:

Two or more adjoining vertical margins of block boxes in the normal flow collapse. The resulting margin width is the maximum of the adjoining margin widths. In the case of negative margins, the maximum of the absolute values of the negative adjoining margins is deducted from the maximum of the positive adjoining margins. If there are no positive margins, the absolute maximum of the negative adjoining margins is deducted from zero. Note. Adjoining boxes may be generated by elements that are not related as siblings or ancestors.
Vertical margins between a floated box and any other box do not collapse (not even between a float and its in-flow children).
Vertical margins of elements that establish new block formatting contexts (such as floats and elements with overflow other than 'visible') do not collapse with their in-flow children.
Margins of absolutely positioned boxes do not collapse (not even with their in-flow children).
Margins of inline-block elements do not collapse (not even with their in-flow children).
If the top and bottom margins of a box are adjoining, then it is possible for margins to collapse through it. In this case, the position of the element depends on its relationship with the other elements whose margins are being collapsed.

If the element's margins are collapsed with its parent's top margin, the top border edge of the box is defined to be the same as the parent's.
Otherwise, either the element's parent is not taking part in the margin collapsing, or only the parent's bottom margin is involved. The position of the element's top border edge is the same as it would have been if the element had a non-zero bottom border.

An element that has had clearance applied to it never collapses its top margin with its parent block's bottom margin.

Note that the positions of elements that have been collapsed through have no effect on the positions of the other elements with whose margins they are being collapsed; the top border edge position is only required for laying out descendants of these elements.

Margins of the root element's box do not collapse.

The bottom margin of an in-flow block-level element is always adjoining to the top margin of its next in-flow block-level sibling, unless that sibling has clearance.
The top margin of an in-flow block-level element is adjoining to its first in-flow block-level child's top margin if the element has no top border, no top padding, and the child has no clearance.
The bottom margin of an in-flow block-level element with a 'height' of 'auto' is adjoining to its last in-flow block-level child's bottom margin if the element has no bottom padding or border.
An element's own margins are adjoining if the 'min-height' property is zero, and it has neither top or bottom borders nor top or bottom padding, and it has a 'height' of either 0 or 'auto', and it does not contain a line box, and all of its in-flow children's margins (if any) are adjoining.
When an element's own margins collapse, and that element has had clearance applied to it, its top margin collapses with the adjoining margins of subsequent siblings but that resulting margin does not collapse with the bottom margin of the parent block.
Collapsing is based on the used value of 'padding', 'margin', and 'border' (i.e., after resolving any percentages). The collapsed margin is calculated over the used value of the various margins.