YongGang Meng's Weblog

Get the last day of the month use javascript in VS2008

Ralax — Wed, 11 Nov 2009 03:47:06 GMT

I have a function which returns the last day of a month. The function is like this: In Javascript Editor , it works like the above picture. But in VS2008, it's strange. I am very strange for this, then I Bing , http://www.w3schools.com/jsref/jsref_parseInt...(read more)

Use UdpClient to send and receive message

Ralax — Thu, 21 May 2009 23:05:00 GMT

Client to receive message sent by server: 1: using System; 2: using System.Collections.Generic; 3: using System.ComponentModel; 4: using System.Data; 5: using System.Drawing; 6: using System.Linq; 7: using System.Text; 8: using System.Windows.Forms; 9...(read more)

Excel data type seems strange when use ado.net to select

Ralax — Thu, 21 May 2009 21:59:00 GMT

Recently, we need import some data from excel to Oracle database. A strange thing confused me. The excel file has a column, for example PhoneNumber, the format is 999999, here are some example data: 123456 234561 345612 456123 561234 612345 000123...(read more)

Problem about SQLite and Linq to Entities

Ralax — Mon, 30 Mar 2009 06:29:00 GMT

I have a web project developed in VS2008, which use System.Data.SQLite for .Net 2.0 and Linq to Entities to access data. Here is the source layout: You can see that i have a SQLite database Test_DB.db3 in SQLite folder. In my develop machine, i use connectiongstring...(read more)

Export data to excel or word

Ralax — Wed, 04 Mar 2009 06:14:00 GMT

In the actual develpment, we offen encounter such a problem about exporting data to excel or word, especially excel. I can export data to excel from gridview, but i can not apply styles to the excel cell. Last week, i found how to set the style. For example...(read more)

SQL 表信息问题

Ralax — Fri, 28 Nov 2008 11:54:00 GMT

若要查看表的列名，可以使用 sp_help 或下列查询之一：SELECT name FROM sys.columns WHERE OBJECT_ID IN (SELECT OBJECT_ID ('table_name')) 或 SELECT TOP 0 * FROM table_name。 1. Execute sp_help tablename 如: Execute sp_help 'Schedule' 2. Select Top 0 * From tablename 如：Select Top...(read more)

How to invoke PageMethods in MasterPage

Ralax — Thu, 13 Nov 2008 11:51:00 GMT

I have a web project, in the project, there is a MasterPage and some WebContentPages. In the MasterPage, there is a function, when you click a button, show or hide the left content.When you refresh or navigate other WebContentPage, the left content keeps...(read more)

ModelPopupExtender的一个问题解决方案

Ralax — Fri, 07 Nov 2008 15:22:00 GMT

最近用ModelPopupExtender时，总是提示我有 Sys.InvalidOperationException 未通过 Sys.UI.DomEvent.addHandler 的错误，后来发现是我设置了CancellControlID，而没有设置相应的事件，我是通过在服务器端Show和Hide来控制的，这样脚本在寻找CancellControlID的时候就找不到了，就为null，在脚本中就会抛出以上错误。所以，如果我们要在服务器端控制ModelPopupExtender，不要设置ControlId就可以了...(read more)

Asp.Net Web开发需要了解的知识

Ralax — Thu, 06 Nov 2008 12:45:00 GMT

很久没有做Web开发了，本以为有以前的基础加上WinForm的开发经验，Web应该不是什么问题的，应该很Easy。但是现在我发现我错了，Web开发已经不是简单的事情了。现在Web开发出来的一些优秀产品已经比较接近WinForm了，这就提高了Web开发的门槛。所以，现在如果我们想做好Web的开发，至少应该了解以下几方面的开发知识： Asp.Net Asp.Net Ajax Asp.Net Ajax Client Library Asp.Net Ajax Future Controls and Ajax...(read more)

A question about Page Header

Ralax — Thu, 02 Oct 2008 07:45:00 GMT

When you add a Literal control to Page Header, for example: <head runat="server"> <asp:Literal runat="server" ID ="literal" >Literal Test!</asp:Literal> <title>Untitled Page</title> </head> When you browser the page...(read more)

单例模式

Ralax — Sun, 03 Feb 2008 07:12:00 GMT

从今天开始，我每周会写一个关于设计模式的文章，还是用自己的语言，从自己的角度来阐述设计模式的用途，好处，以及怎么用。首先，最简单的也就是单例了，我就用他作为自己的第一篇设计模式的文章吧。 1. 单例的目的是什么？这个应该很明显，保证一个类只有单一的实例，也就是说你无法通过New或CreateInstance来创建这个类的一个新实例。 2. 单例的好处在哪里？当一个对象在程序内部只能有一个实例的时候，它可以保证我们不会重复创建，而是始终指向同一个对象。 3. 怎么用？单例模式的实现代码如下...(read more)

对IOC和DI的理解

Ralax — Mon, 28 Jan 2008 07:07:00 GMT

首先说一下什么是IOC和DI，IOC是Inversion of Control（控制反转）的简写，DI是Dependency Injection（依赖注入）的简写，martinfowler对IOC的解释为：“ Inversion of control is a common characteristic of frameworks, so saying that these lightweight containers are special because they use inversion...(read more)

Today, 1/24/2008

Ralax — Thu, 24 Jan 2008 14:34:00 GMT

I will keep this day in mind. The day my asp.net blog was created....(read more)