摘要： @@rowcountAfter each Transact-SQL statement, the server sets the value of this variable to the total number of records affected by it. It can be used to verify the success of selected operations: select Make, Model, EqTypeid into OldEquipment from Equipment where EqTypeid = 2 if ... 阅读全文

摘要： 以下面这个简单的程序为例#include templatestruct EST_TTI_Entry{ float t; CONTAINER::Index i;};int main(){ return 0;}使用 visual studio 2008 编译会提示 1>d:\code\cplusexercise\abouttemplatememberdefaultint\main.cc(7) : error C2146: syntax error : missing ';' before identifier 'i'1>d:\code\cplusexer 阅读全文

摘要： 1 : ExecuteNonQuery() Executes non-SELECT commands, such as SQL commands that insert,delete, or update records. The returned value indicates the number of rows affected by the command. You can also use ExecuteNonQuery() toexecute data-definition commands that create, alter, or delete database object 阅读全文

摘要： 下面这段代码using (WebResponse response = request.GetResponse()){ using (StreamReader rd = new StreamReader(response.GetResponseStream())) { XDocument xd = XDocument.Load(rd.ReadToEnd()); }}在VS2005会报 ：路径中有非法字符错误 如果改成using (WebResponse respons... 阅读全文

摘要： 一种是：让 sql server 2008 支持.net 4.0,但如何实现不知道简单方法是 ： 用 vs 2005 build程序集或者在 project---->property---->application----->Target Framework 选 .net framework 3.5vs各版本使用的.net 版本分别是1.0: Visual Studio .NET1.1: Visual Studio .NET 20032.0: Visual Studio 2005 / 20083.0 / 3.5: Visual Studio 20084.0: Visual S 阅读全文

摘要： 在窗体的 InitializeComponent();之后，加一句System.Net.ServicePointManager.ServerCertificateValidationCallback = delegate { return true; };让证书的Validation总是返回true 阅读全文

摘要： One fix for the problem is to go to the Debug -> Exceptions -> Managed Debug Assistants menu in Visual Studio and uncheck the ContextSwitchDeadlock来源网站 http://blog.wpfwonderland.com/2007/08/16/clr-has-been-unable-to-transition-from-com-context-for-60-seconds/ 阅读全文

摘要： declare @ct as datetimeselect @ct=GETDATE()print @ctselect @ct=dateadd(month,datediff(month,0,@ct), '00:00:00')print @ct 阅读全文

摘要： stackOverFlow 's answerI've encountered this a couple times and keep forgetting what causes it. I ran into this when I renamed the namespace on my code behind file but not in my XAML.So check if you've done the same. They need to match since they are both part of a partial classnamespace 阅读全文

摘要： 1：项目属性-----应用程序：清单为Properties\app.manifest2： 修改安全选项：启用ClickOnce安全设置，选择这是安全可信的应用程序来源网页： http://www.silverlightchina.net/html/study/WPF/2012/0315/14531.html 阅读全文