While learning C#, the Property confused me a lot, as it is very similar to the member variable in class.there are must  some reasons for its existence, otherwise it will simply replaced by the memb

Got a weird issue today with a LINQ to SQL dbml file.It did work all right in local host but collapse after uploading to the web server.It threw an Object reference not set to an instance of a

1. FormatCtrl + K + D (Entire document)Ctrl + K + F (Selection only)orCtrl+E, Ctrl+D to format the entire document.Ctrl+E, Ctrl+F to format the selection.

using System.Net;using System.Net.Mail;using (MailMessage message = new MailMessage()){    message.To.Add(new MailAddress("supremezone@126.com")); //收件人邮箱    message.Subject = "通过配置文件设

static string CapText(Match m){ // Get the matched string. string x = m.ToString(); // If the first char is lower case... if (char.IsLower(x[0])) {

给控件添加属性：onfocus=this.blur()

刚接触asp.net的人，在把文件上传到server后可能会遇到 ‘Could not load type’ 的错误aspx页面中如果把页面顶部的Inherits属性删除也能临时解决这个问题实际上这个错误是因为没有上传bin文件夹及其内容到服务器造成的在编译项目时，vs会把文件按照namespace编译成dll文件，页面载入时需要用到这些文件所以再上传项目时要把项目编译好，然后把b

前台：<%@ Page Title="Home Page" Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebApplication1._Default" %>

The error "It is an error to use a section registered as allowDefinition='MachineToApplication' beyond application level.  This error can be caused by a virtual directory not being configured as an

LINQ study notes1. LINQ concept:LINQ stands for language integrated Query. You can retrieval datafrom various sources (SQL database, list, object, xml, array) by just using LINQ,instead of differe

Single():操作一个集合，同时强要求只有一个对象匹配，并返回这一个。First():操作一个集合，可以有多个对象匹配，但是只返回第一个。Take(1):操作一个集合，可以有对个对象匹配，单只返回第一个，但是这里返回的是一个集合，而不是单个的概念。

//file pathstring file_ddr_service_agreement = HttpContext.Current.Server.MapPath(@"~\service_solutions\freedom_to_learn\FTL_online\myorder\schoolpages\Direct_Debit_Agreement-2013\") + "Comput