CodeKeep ASP.NET Feed

MVC3 Custom Membership Provider

Tue, 22 May 2012 12:33:23 GMT

Description: Overrides the default ASP.NET membership provider in a MVC3 Web App

Link: http://www.codekeep.net/snippets/918207f9-9011-4af8-a59d-486548c07cfe.aspx

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Security;

namespace CustomProvider.Infrastructure {
    public class CustomMembershipProvider : MembershipProvider {

        private string _applicationName;
        private bool _enablePasswordReset;
        private bool _enablePasswordRetrieval;
        private bool _requiresQuestionAndAnswer;
        private bool _requiresUniqueEmail;
        private int _maxInvalidPasswordAttempts;
        private int _passwordAttemptWindow;
        private int _minRequiredPasswordLength;
        private int _minRequiredNonalphanumericCharacters;
        private string _passwordStrengthRegularExpression;
        private MembershipPasswordFormat _passwordFormat;


        private string GetConfigValue(string configValue, string defaultValue) {
            if ( String.IsNullOrEmpty( configValue ) ) {
                return defaultValue;
            }

            return configValue;
        }


        public override void Initialize( string name, System.Collections.Specialized.NameValueCollection config ) {

            if ( config == null ) {
                throw new ArgumentException( "config" );
            }

            if ( String.IsNullOrEmpty( name ) ) {
                name = "CustomMembershipProvider";
            }

            if ( String.IsNullOrEmpty( config [ "description" ] ) ) {
                config.Remove( "description" );
                config.Add( "description", "CustomMembershipProvider" );
            }

            base.Initialize( name, config );

            _applicationName = GetConfigValue( config [ "applicationName" ], System.Web.Hosting.HostingEnvironment.ApplicationVirtualPath );
            _enablePasswordReset = Convert.ToBoolean(GetConfigValue( config [ "enablePasswordReset" ], "true"));
            _enablePasswordRetrieval = false;
            _requiresQuestionAndAnswer = false;
            _requiresUniqueEmail = true;
            _maxInvalidPasswordAttempts = Convert.ToInt32(GetConfigValue( config [ "maxInvalidPasswordAttempts" ], "5"));
            _passwordAttemptWindow = Convert.ToInt32(GetConfigValue( config [ "passwordAttemptWindow" ], "10"));
            _minRequiredPasswordLength = Convert.ToInt32(GetConfigValue( config [ "minRequiredPasswordLength" ], "6"));
            _minRequiredNonalphanumericCharacters = Convert.ToInt32(GetConfigValue( config [ "minRequiredNonalphanumericCharacters" ], "1"));
            _passwordStrengthRegularExpression = GetConfigValue( config [ "passwordStrengthRegularExpression" ], "" );
            _passwordFormat = MembershipPasswordFormat.Hashed;
        }


        public override string ApplicationName {
            get {
                throw new NotImplementedException( );
            }
            set {
                throw new NotImplementedException( );
            }
        }

        public override bool ChangePassword( string username, string oldPassword, string newPassword ) {
            throw new NotImplementedException( );
        }

        public override bool ChangePasswordQuestionAndAnswer( string username, string password, string newPasswordQuestion, string newPasswordAnswer ) {
            throw new NotImplementedException( );
        }

        public override MembershipUser CreateUser( string username, string password, string email, string passwordQuestion, string passwordAnswer, bool isApproved, object providerUserKey, out MembershipCreateStatus status ) {
            throw new NotImplementedException( );
        }

        public override bool DeleteUser( string username, bool deleteAllRelatedData ) {
            throw new NotImplementedException( );
        }

        public override bool EnablePasswordReset {
            get { throw new NotImplementedException( ); }
        }

        public override bool EnablePasswordRetrieval {
            get { throw new NotImplementedException( ); }
        }

        public override MembershipUserCollection FindUsersByEmail( string emailToMatch, int pageIndex, int pageSize, out int totalRecords ) {
            throw new NotImplementedException( );
        }

        public override MembershipUserCollection FindUsersByName( string usernameToMatch, int pageIndex, int pageSize, out int totalRecords ) {
            throw new NotImplementedException( );
        }

        public override MembershipUserCollection GetAllUsers( int pageIndex, int pageSize, out int totalRecords ) {
            throw new NotImplementedException( );
        }

        public override int GetNumberOfUsersOnline( ) {
            throw new NotImplementedException( );
        }

        public override string GetPassword( string username, string answer ) {
            throw new NotImplementedException( );
        }

        public override MembershipUser GetUser( string username, bool userIsOnline ) {
            throw new NotImplementedException( );
        }

        public override MembershipUser GetUser( object providerUserKey, bool userIsOnline ) {
            throw new NotImplementedException( );
        }

        public override string GetUserNameByEmail( string email ) {
            throw new NotImplementedException( );
        }

        public override int MaxInvalidPasswordAttempts {
            get { throw new NotImplementedException( ); }
        }

        public override int MinRequiredNonAlphanumericCharacters {
            get { throw new NotImplementedException( ); }
        }

        public override int MinRequiredPasswordLength {
            get { throw new NotImplementedException( ); }
        }

        public override int PasswordAttemptWindow {
            get { throw new NotImplementedException( ); }
        }

        public override MembershipPasswordFormat PasswordFormat {
            get { throw new NotImplementedException( ); }
        }

        public override string PasswordStrengthRegularExpression {
            get { throw new NotImplementedException( ); }
        }

        public override bool RequiresQuestionAndAnswer {
            get { throw new NotImplementedException( ); }
        }

        public override bool RequiresUniqueEmail {
            get { throw new NotImplementedException( ); }
        }

        public override string ResetPassword( string username, string answer ) {
            throw new NotImplementedException( );
        }

        public override bool UnlockUser( string userName ) {
            throw new NotImplementedException( );
        }

        public override void UpdateUser( MembershipUser user ) {
            throw new NotImplementedException( );
        }

        public override bool ValidateUser( string username, string password ) {
            return true;
        }
    }
}

Repeater Dropdownlist SelectedIndexChanged Firing

Mon, 27 Feb 2012 19:08:24 GMT

Description: Repeater Dropdownlist SelectedIndexChanged Firing shows how to execute an action on a dropdownlist postback within a repeater.

Link: http://www.codekeep.net/snippets/8cf2732a-a605-4100-8bdf-979d7026b6a3.aspx

<asp:Repeater ID="rptrVendors" runat="server">
            <ItemTemplate>
                <tr><td class="RequiredSubHead" align="right">
                    <asp:Label ID="lblServiceName" runat="server" Text='<%#Eval("ServiceName")%>' />
                    <asp:Literal ID="litServiceID" runat="server" Text='<%#Eval("ServiceID")%>' Visible="false" />
                </td><td style="width: 5px">&nbsp;</td>
                <td style="white-space: nowrap" colspan="2">
                     <asp:DropDownList ID="ddlVendorID" runat="server" Visible="True" ValidationGroup="Vendor" Width="250px" AutoPostBack="True">
                    </asp:DropDownList>
                </td></tr>
            </ItemTemplate>
        </asp:Repeater>

Protected Sub rptrVendors_ItemCreated(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.RepeaterItemEventArgs) Handles rptrVendors.ItemCreated
        If Not e.Item.ItemType = ListItemType.Item And Not e.Item.ItemType = ListItemType.AlternatingItem Then
            Exit Sub
        End If
        Dim litServiceID As Literal = CType(e.Item.FindControl("litServiceID"), Literal)
        Dim ddlVendorID As DropDownList = CType(e.Item.FindControl("ddlVendorID"), DropDownList)
        AddHandler ddlVendorID.SelectedIndexChanged, AddressOf ddlVendorID_SelectedIndexChanged
End Sub

Protected Sub ddlVendorID_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs)
        Dim litServiceID As Literal = CType(sender.FindControl("litServiceID"), Literal)
        ' Code to insert DropDownlist Selected Value into the database via Data Access Layer (DAL).
        Dim objNewOrderDAL As New NewOrderDAL
        objNewOrderDAL.VendorInsert(CInt(Session("OrderID")), CInt(litServiceID.Text), CInt(sender.SelectedValue))
End Sub

Protected Sub rptrVendors_ItemDataBound(ByVal source As Object, ByVal e As System.Web.UI.WebControls.RepeaterItemEventArgs) Handles rptrVendors.ItemDataBound
        If e.Item.ItemType = ListItemType.Item Or e.Item.ItemType = ListItemType.AlternatingItem Then
            ' Add items to dropdownlist dynamically.
            Dim ddlVendorID As DropDownList = CType(e.Item.FindControl("ddlVendorID"), DropDownList)
            Dim tListItem As New ListItem
            Dim VendorIDSelected As Integer
            tListItem.Text = "Select Vendor"
            tListItem.Value = "0"
            ddlVendorID.Items.Add(tListItem)
            
        End If
End Sub

Make a button disable on click

Mon, 06 Feb 2012 17:43:06 GMT

Description: Asp refuses to submit the postback if the button is disabled via javascript. This disables the button immediately after the postback fires

Link: http://www.codekeep.net/snippets/1a15f314-87fb-4f6f-88c1-f2e498e13f69.aspx

OnClientClick="setTimeout( function() {$('#CopyScenarioButton').attr('disabled', 'disabled');},0)"

Make asp think css is loaded

Mon, 06 Feb 2012 16:39:39 GMT

Description: asp.net will complain about css tags it doesn't recognize in user controls that the master page will load. this works around it.

Link: http://www.codekeep.net/snippets/e2a25f08-40ba-4570-abc8-817ea1426a6c.aspx

<% if (false)
{ %> <!-- designer hack allows designer to pick up the common.css that would be picked up when called with a master page anyhow -->
	<link rel="Stylesheet" type="text/css" href="~/Styles/Common.css" id="style" visible="false" />
<% }%>

Web SiteMap Remove Menu Node

Thu, 26 Jan 2012 21:30:01 GMT

Description: VB NET shows how to remove a menu node from the site map for a given page.

Link: http://www.codekeep.net/snippets/d1c53fee-c6f1-47db-b196-22eda5890e8c.aspx

THis assumes you have a WEB.SITEMAP file and a Menu1 using the sitemap as the datasource.

CODE BEHIND OF CALLING PAGE

Protected Sub Menu1_MenuItemDataBound(ByVal sender As Object, ByVal e As MenuEventArgs) Handles Menu1.MenuItemDataBound
        If e.Item.Text = "Your Menu Node Title" Then
            If CBool(Session("MyPermissions")) = False Then
                e.Item.Parent.ChildItems.Remove(e.Item)
            End If
        End If
End Sub

MvcHtmlString - EmbedTemplate

Wed, 04 Jan 2012 18:05:27 GMT

Description: generic wrapper for ActionLink that allows you to use it with any function that expects a string, and returns an mvchtmlstring

Link: http://www.codekeep.net/snippets/90f90f62-440e-4f4b-bbac-60075845dcd9.aspx

private static HelperResult EmbedTemplate(Func<string, MvcHtmlString> helperFunc, Func<object, HelperResult> template)
		{
			var firstPass = helperFunc("[replaceme]");
			var asString = firstPass.ToString();
			var replaced = asString.Replace("[replaceme]", template(null).ToString());
			return new HelperResult(writer =>
			{
				writer.Write(replaced);
			});
		}

ActionLinkEmbedHtml

Wed, 04 Jan 2012 18:01:56 GMT

Description: Regular ActionLink overloads do not allow you to embed raw html inside them, this gets around that. Not sure if it will work with embedding any javascript however.

Link: http://www.codekeep.net/snippets/78b86aab-da63-468d-beaf-9fcef622f458.aspx

namespace System.Web.Mvc
{
 public static class HtmlHelpers
    {
		/// <summary>
		/// Used when the regular actionLinks do not allow custom html inside
		/// </summary>
		/// <param name="helper"></param>
		/// <param name="result"></param>
		/// <param name="template"></param>
		/// <param name="options"></param>
		/// <returns></returns>
		public static HelperResult ActionLink(this AjaxHelper helper,ActionResult result, Func<object,HelperResult> template,AjaxOptions options)
		{
		    var link=helper.ActionLink("[replaceme]",result,options);
			var asString=link.ToString();
			var replaced=asString.Replace("[replaceme]",template(null).ToString());

			return new HelperResult(writer =>
			{
				writer.Write(replaced);
			});
		}
}
}

Validate Zip

Wed, 14 Dec 2011 18:48:13 GMT

Description: This is a regular expression that will validate a zip code

Link: http://www.codekeep.net/snippets/23d9f5e1-f99f-45d8-9289-663c1993a47f.aspx

^\d{5}([\-]\d{4})?$

Validate Date

Wed, 14 Dec 2011 15:29:25 GMT

Description: This is a regular expression that can be used to validate a date

Link: http://www.codekeep.net/snippets/ab1b7174-1b17-4720-9717-5d9d919121e8.aspx

^(0[1-9]|1[012])[- /.](0[1-9]|[12][0-9]|3[01])[- /.](19|20)\d\d$

Repeater Code Behind

Wed, 23 Nov 2011 18:02:40 GMT

Description: Repeater Code Behind shows ItemCommand and ItemDataBound in ASP.NET VB

Link: http://www.codekeep.net/snippets/5b90aa0c-e914-47fa-8b0c-b4f81fa8d613.aspx

<!-- CODE IN FRONT --->
<asp:Repeater ID="rptMyRepeater" runat="server" OnItemCommand="rptMyRepeater_ItemCommand">
                    <ItemTemplate>
                        <tr>
                        <td class="tabtablerow">
                            <asp:HiddenField ID="hdID" value='<%# Eval("ID")%>' runat="server" />
                            </td>
                        <td class="tabtablerow" align="center">
                            <asp:ImageButton ID="ibtnEdit" runat="server" CommandName="EditThis" CssClass="caseInput" CausesValidation="False" ImageUrl="~/images/icon-edit.png" AlternateText="Edit" Width="18" Height="18" />
                            <asp:ImageButton ID="ibtnSave" runat="server" CommandName="SaveThis" CssClass="caseInput" CausesValidation="False" ImageUrl="~/images/icon-save.png" AlternateText="Edit" Width="18" Height="18" Visible="false" />
                            </td>
                       <td class="tabtablerow" align="center">
                            <asp:ImageButton ID="ibtnIsActive" runat="server" CommandName="IsActiveThis" CssClass="caseInput" CausesValidation="False" ImageUrl="~/images/icon-checked.png" AlternateText="Is Active" Width="18" Height="18" />
                            </td>
                        <td class="tabtablerow">
                            <asp:ImageButton ID="ibtnDelete" runat="server" CommandName="DeleteThis" CssClass="caseInput" CausesValidation="False" ImageUrl="~/images/btn_delete.png" AlternateText="Delete" Width="49" Height="18" OnClientClick="return confirm('DELETE This?');" />
                            </td>
                        </tr>
                    </ItemTemplate>
                </asp:Repeater>

<!-- CODE BEHIND -->

#Region "Repeater Actions"
    Protected Sub rptMyRepeater_ItemDataBound(ByVal source As Object, ByVal e As System.Web.UI.WebControls.RepeaterItemEventArgs) Handles rptMyRepeater.ItemDataBound
        ' Exit function if this is not in ItemTemplate   
        If Not e.Item.ItemType = ListItemType.AlternatingItem AndAlso Not e.Item.ItemType = ListItemType.Item Then Exit Sub

        Dim item As RepeaterItem
        item = e.Item
        Dim hdID As HiddenField = CType(item.FindControl("hdID"), HiddenField)
        Dim ibtnDelete As ImageButton = CType(item.FindControl("ibtnDelete"), ImageButton)


        If CInt(hdID.Value) = 0 Then
            ibtnDelete.Visbile = False
        End If              
    End Sub

    Protected Sub rptMyRepeater_ItemCommand(ByVal source As Object, ByVal e As System.Web.UI.WebControls.RepeaterCommandEventArgs) Handles rptMyRepeater.ItemCommand
        ' Exit function if this is not in ItemTemplate   
        If Not e.Item.ItemType = ListItemType.AlternatingItem AndAlso Not e.Item.ItemType = ListItemType.Item Then Exit Sub

        Dim item As RepeaterItem
        item = e.Item
        Dim hdID As HiddenField = CType(item.FindControl("hdID"), HiddenField)
        Dim ibtnEdit As ImageButton = CType(item.FindControl("ibtnEdit"), ImageButton)
        Dim ibtnSave As ImageButton = CType(item.FindControl("ibtnSave"), ImageButton)
        Dim ibtnIsActive As ImageButton = CType(item.FindControl("ibtnIsActive"), ImageButton)
        Dim ibtnDelete As ImageButton = CType(item.FindControl("ibtnDelete"), ImageButton)        If e.CommandName = "DeleteThis" Then
            
        If e.CommandName = "DeleteThis" Then

        ElseIf e.CommandName = "EditThis" Then
            
        ElseIf e.CommandName = "SaveThis" Then
            
        ElseIf e.CommandName = "IsActiveThis" Then
            
        End If
    End Sub
#End Region

Set locale id in Cookie

Wed, 12 Oct 2011 04:59:14 GMT

Description: Set locale id in Cookie

Link: http://www.codekeep.net/snippets/decabe35-598d-4a87-8fe4-39b66190a8a9.aspx

Set locale id in Cookie

Date Compare (VB)

Tue, 04 Oct 2011 19:48:37 GMT

Description: Date Compare Function for ASP.NET VB

Link: http://www.codekeep.net/snippets/c4b6796c-c771-4982-b154-20d70c144ff7.aspx

Imports System.mscorlib 

Dim date1 As Date = #08/01/2009 12:00AM#
Dim date2 As Date = #08/01/2009 12:00PM#
Dim result As Integer = DateTime.Compare(date1, date2)
Dim relationship As String

If result < 0 Then
   relationship = "is earlier than"
ElseIf result = 0 Then
   relationship = "is the same time as"         
Else
   relationship = "is later than"
End If

Load Page Path into Javascript variable

Fri, 23 Sep 2011 21:39:05 GMT

Description: Loading a page path from the server/server code into a javascript variable for consumption elsewhere

Link: http://www.codekeep.net/snippets/719c5738-0026-49af-b1ce-c6f884b4f75e.aspx

var pagePath='<%=VirtualPathUtility.ToAbsolute("~/PageName") %>';

Data Caching Dropdown (VB)

Thu, 15 Sep 2011 20:44:10 GMT

Description: Function to cache a dataset and use in dropdown list. ASP.NET VB

Link: http://www.codekeep.net/snippets/ed16d5db-593a-4f61-b907-91e20dc66a6f.aspx

   Private Function LoadDataSet(ByVal Sql As String) As DataSet
        Try
            Dim objConnGODB As New connGODB
            Dim ds As New DataSet
            ds = objConnGODB.getDataSet(Sql)
            Return ds
        Catch ex As Exception
            Throw New Exception("There was a problem with DropDowns.LoadDataSet. " & ex.Message)
        End Try
    End Function

    Public Function GetCachedData(ByVal DropDownListName As String, ByVal Sql As String) As DataSet
        ' This gets data from the cache, or reinserts it if older than 12 hours.
        Dim ds As DataSet
        If IsNothing(HttpContext.Current.Cache(DropDownListName)) Then
            HttpContext.Current.Cache.Insert(DropDownListName, LoadDataSet(Sql), Nothing, DateTime.Now.AddHours(12.0), TimeSpan.Zero)
        End If
        ds = HttpContext.Current.Cache(DropDownListName)
        Return ds
    End Function

    Public Sub AdjusterRoles(ByVal DDL As DropDownList)
        Dim ds As DataSet
        ds = GetCachedData("AdjusterRoles", "SELECT RoleName, RoleID FROM dbo.Roles (NOLOCK) WHERE RoleID BETWEEN 7 AND 11 ORDER BY RoleName")
        PopulateDropDownDS(DDL, ds, "RoleName", "RoleID")
    End Sub

    Public Sub PopulateDropDownDS(ByVal DDL As DropDownList, ByVal ds As DataSet, ByVal txt As String, ByVal val As String)
        DDL.Items.Clear()
        If ds.Tables(0).Rows.Count > 0 Then
            For mRow As Integer = 0 To ds.Tables(0).Rows.Count - 1
                DDL.Items.Add(New ListItem(ds.Tables(0).Rows.Item(mRow).Item(txt).ToString, ds.Tables(0).Rows.Item(mRow).Item(val).ToString))
            Next
        End If
    End Sub

Hash Salt (VB)

Thu, 15 Sep 2011 15:10:22 GMT

Description: Calculates Hash of specified password + Salt from DB ASP.NET VB

Link: http://www.codekeep.net/snippets/d4d03e7f-baaf-494c-bd25-11f4bccb94de.aspx

' Calculate Hash of specified password + Salt from DB
  Set CM = Server.CreateObject("Persits.CryptoManager")
  Set Context = CM.OpenContext("mycontainer", True)
  Set Hash = Context.CreateHash
  Hash.AddText Request("Password") & Salt
  HashValue2 = Hash.Value.Hex
  Set Hash = Nothing
  Set CM = Nothing

LOOP through FORM (VB)

Thu, 15 Sep 2011 15:08:38 GMT

Description: This loops through all form fields and shows how to count the number of FALSE values. ASP.NET VB

Link: http://www.codekeep.net/snippets/8f644284-9670-4ae0-b1e9-731d234ff070.aspx

Dim iCount = 0
Dim TotalNoAnswers = 0
lblTest.Text = "OK:"
  For Each Item In Request.Form
    If Request.Form(Request.Form.Keys(iCount).ToString) = "False" Then
      TotalNoAnswers += 1
    End If
    iCount += 1
  Next

Valida Campo data com Ano bisexto

Wed, 14 Sep 2011 04:21:20 GMT

Description: Baixar plugin maskedinput.js para mascara do Jquery

Link: http://www.codekeep.net/snippets/dbb2927b-5ca1-4ed0-85d4-14644b3934a1.aspx

<script src="../Scripts/maskedinput/maskedinput.js" type="text/javascript"></script>

<asp:TextBox  ID="txtPessDtNascimento"   CssClass="txtPessDtNascimento" runat="server" Width="80px" MaxLength="10" /> dd/mm/aaaa

 <asp:RegularExpressionValidator ID="RegularExpressionValidator2" SetFocusOnError="true"
                        runat="server" ControlToValidate="txtPessDtNascimento" ErrorMessage="Data Inválida"
                        ValidationGroup="Basicos" EnableClientScript="true" ValidationExpression="^((((0?[1-9]|[12]\d|3[01])[\.\-\/](0?[13578]|1[02])[\.\-\/]((1[6-9]|[2-9]\d)?\d{2}))|((0?[1-9]|[12]\d|30)[\.\-\/](0?[13456789]|1[012])[\.\-\/]((1[6-9]|[2-9]\d)?\d{2}))|((0?[1-9]|1\d|2[0-8])[\.\-\/]0?2[\.\-\/]((1[6-9]|[2-9]\d)?\d{2}))|(29[\.\-\/]0?2[\.\-\/]((1[6-9]|[2-9]\d)?(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00)|00)))|(((0[1-9]|[12]\d|3[01])(0[13578]|1[02])((1[6-9]|[2-9]\d)?\d{2}))|((0[1-9]|[12]\d|30)(0[13456789]|1[012])((1[6-9]|[2-9]\d)?\d{2}))|((0[1-9]|1\d|2[0-8])02((1[6-9]|[2-9]\d)?\d{2}))|(2902((1[6-9]|[2-9]\d)?(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00)|00))))$" />


<script language="javascript" type="text/javascript">

    jQuery(function ($) {

        try {
            $(".txtPessDtNascimento").mask("99/99/9999");
        } catch (e) {
            alert(e);
        }

    });

MySql .net provider

Fri, 09 Sep 2011 11:21:40 GMT

Description: A note for myself, making public in case its of use to anyone else. Its off the jitbit forum faq

Link: http://www.codekeep.net/snippets/c3af19af-54a8-499e-9f08-1c73724e4778.aspx

Install the "MySQL Connector .Net". If you use Godaddy (or another hosting provider) - place the "MySQL.Data.dll" to the "bin" folder and add this to your web.config:

<system.data>
  <DbProviderFactories>
    <add name="MySQL Data Provider" invariant="MySql.Data.MySqlClient" description=".Net Framework Data Provider for MySQL" type="MySql.Data.MySqlClient.MySqlClientFactory, MySql.Data, Version=5, Culture=neutral" />
  </DbProviderFactories>
</system.data>

Finding ASP.NET Gridview internal button

Sat, 27 Aug 2011 11:51:44 GMT

Description: This is how you will search a button object within the parent GridView How:if you put your button inside of gridview and you want to read it

Link: http://www.codekeep.net/snippets/a860697a-89d7-46d4-b531-858a243529db.aspx

protected void Button1_Click(object sender, EventArgs e)
{
        Button btn = (Button)sender;
        GridViewRow row = (GridViewRow)btn.NamingContainer;
        Response.Write("Row Index of Link button: " + row.RowIndex +
                       "DataKey value:" + GridView1.DataKeys[row.RowIndex].Value.ToString());
}

Standard DataGrid

Wed, 20 Jul 2011 16:24:04 GMT

Description: Standard Data Grid

Link: http://www.codekeep.net/snippets/7c66f9f9-0c39-4759-9d40-443bb594b36b.aspx

<%@ Register Assembly="NEA.WebControls" Namespace="NEA.WebControls" TagPrefix="nea" %>

<div class="tableHeader">
    <div style="padding: 2px; border-bottom: solid 1px black;">
        <%-- ADD ANY HEADER CONTROLS HERE --%>
    </div>
</div>
<div class="tableFooter">
    <div class="pager">
        <asp:DataPager ID="pager" runat="server" PageSize="15" PagedControlID="uxMainGrid">
            <Fields>
                <asp:NextPreviousPagerField ButtonCssClass="command" FirstPageText="«" PreviousPageText="<" RenderDisabledButtonsAsLabels="true"
                    ShowFirstPageButton="true" ShowPreviousPageButton="true" ShowLastPageButton="false" ShowNextPageButton="false" />
                <asp:NumericPagerField ButtonCount="15" NumericButtonCssClass="command" CurrentPageLabelCssClass="current" NextPreviousButtonCssClass="command"
                    NextPageText="more..." />
                <asp:NextPreviousPagerField ButtonCssClass="command" LastPageText="»" NextPageText=">" RenderDisabledButtonsAsLabels="true"
                    ShowFirstPageButton="false" ShowPreviousPageButton="false" ShowLastPageButton="true" ShowNextPageButton="true" />
            </Fields>
        </asp:DataPager>
    </div>
    <div style="width: 100%; text-align: center; padding: 2px;">
        <%-- ADD ANY FOOTER CONTROLS HERE --%>
    </div>
</div>
<%-- DON'T FORGET THE DATA KEYS --%>
<div id="div-datagrid" class="tableContent" style="top: 50px;">
    <nea:DataPagerGridView ID="uxMainGrid" runat="server" AutoGenerateColumns="False" Width="100%" EmptyDataText="No records to display"
        HeaderStyle-Height="30px" BackColor="LightGoldenrodYellow" CellPadding="2" CellSpacing="0" CaptionAlign="Bottom"
        DataKeyNames="" AllowPaging="True" HeaderStyle-Font-Size="9pt">
    </nea:DataPagerGridView>
</div>

Add a custom validator to a webform

Thu, 30 Jun 2011 20:09:22 GMT

Description: Make your own general purpose validator

Link: http://www.codekeep.net/snippets/a5c9df01-d472-4f18-9d8f-0863c70cc140.aspx

    Protected Friend Sub AddCustomValidator(ByVal validationGroupName As String, ByVal message As String)
        Dim cv As New CustomValidator
        cv.ValidationGroup = validationGroupName
        cv.ErrorMessage = message
        cv.IsValid = False
        cv.Display = ValidatorDisplay.Dynamic
        cv.EnableClientScript = False
        Me.Validators.Add(cv)
    End Sub

Clears the fields on a webform

Thu, 30 Jun 2011 19:40:10 GMT

Description: Prepares a webform for a new entry

Link: http://www.codekeep.net/snippets/9ba6da60-3d7d-4ce8-ab04-234c58091d99.aspx

    Protected Friend Sub ClearForm(Optional ByVal dropDownDefaultItem As Integer = -1, Optional ByVal radioButtonListDefaultIndex As Integer = 0, Optional ByVal checkBoxDefault As Boolean = False)
        ClearControlCollection(Me.Controls, dropDownDefaultItem, radioButtonListDefaultIndex, checkBoxDefault)
    End Sub

    Protected Friend Sub ClearControlCollection(ByVal wcc As ControlCollection, Optional ByVal dropDownDefaultItem As Integer = -1, Optional ByVal radioButtonListDefaultIndex As Integer = 0, Optional ByVal checkBoxDefault As Boolean = False)
        For Each c As WebControl In wcc
            If TypeOf c Is TextBox Then CType(c, TextBox).Text = String.Empty
            If TypeOf c Is CheckBox Then CType(c, CheckBox).Checked = checkBoxDefault
            If TypeOf c Is RadioButton Then CType(c, RadioButton).Checked = False
            If TypeOf c Is Calendar Then CType(c, Calendar).SelectedDate = DateTime.Now.Date
            If TypeOf c Is AjaxControlToolkit.HTMLEditor.Editor Then CType(c, AjaxControlToolkit.HTMLEditor.Editor).Content = String.Empty
            If TypeOf c Is DropDownList Then CType(c, DropDownList).SelectedIndex = dropDownDefaultItem
            If TypeOf c Is RadioButtonList Then
                For i As Integer = 0 To CType(c, RadioButtonList).Items.Count - 1
                    CType(c, RadioButtonList).Items(i).Selected = (i = radioButtonListDefaultIndex)
                Next
            End If
            If TypeOf c Is CheckBoxList Then
                For Each li As ListItem In CType(c, CheckBoxList).Items
                    li.Selected = checkBoxDefault
                Next
            End If
            If TypeOf c Is ListBox Then
                For Each li As ListItem In CType(c, ListBox).Items
                    li.Selected = False
                Next
            End If
            If TypeOf c Is Panel Then
                ClearControlCollection(CType(c, Panel).Controls, dropDownDefaultItem, radioButtonListDefaultIndex, checkBoxDefault)
            End If
        Next
    End Sub

Add and Retrieving DataTable in Session

Sat, 18 Jun 2011 07:50:15 GMT

Description: Storing and retrieval of DataTable information in Session object

Link: http://www.codekeep.net/snippets/e1f2738f-abc1-423c-b19c-a55dd7ab27b8.aspx

// Setting up the datatable
DataTable dt= new DataTable();
Session.Add("[session name]", dt);

// Retrieve that datatable from session:
DataTable dt= Session["[session name]"] as DataTable

// or
DataTable dt= (DataTable)Session["[session name]"];

Best way to check null query string

Thu, 19 May 2011 09:38:45 GMT

Description: Best way to check null query string

Link: http://www.codekeep.net/snippets/5aafd036-ed81-4ee3-a522-54ec6198f837.aspx

 string rawId = Request.QueryString["ProductID"];
            int productId;
            if (!String.IsNullOrEmpty(rawId) && Int32.TryParse(rawId, out productId))
            {
                MyShoppingCart usersShoppingCart = new MyShoppingCart();
                String cartId = usersShoppingCart.GetShoppingCartId();
                usersShoppingCart.AddItem(cartId, productId, 1);
            }
            else
            {
                Debug.Fail("ERROR : We should never get to AddToCart.aspx without a ProductId.");
                throw new Exception("ERROR : It is illegal to load AddToCart.aspx without setting a ProductId.");
            }
            Response.Redirect("MyShoppingCart.aspx");

Razor MVC3, a file upload form

Mon, 04 Apr 2011 23:15:35 GMT

Description: A file upload form for ASP.NET MVC 3 with Razor. Grabbed from http://slodge.blogspot.com/2010/11/razor-mvc3-file-upload-form.html

Link: http://www.codekeep.net/snippets/0aadf096-7c81-49dd-86dd-719c1361b668.aspx

@using (Html.BeginForm("CreateStepUpload", "Pivot", FormMethod.Post, new { enctype = "multipart/form-data" }))
{
    @Html.ValidationSummary(true)
    <fieldset>
        <legend>Fields</legend>

        <div class="editor-label">
            File:
        </div>
        <div class="editor-field">
            <input type="file" name="theFile" id="theFile" />
        </div>
        <p>
            <input type="submit" value="Save" />
        </p>
    </fieldset>
}