August 15, 2009

Error: Undeclared Identifier Example error message: doy.cpp: In function ‘int main()’: doy.cpp:25: ‘DayOfYear’ undeclared (first use this function) doy.cpp:25: (Each undeclared identifier is reported only once for each function it

Suppose you have a CSS style defined as class=”myClass” as shown below: Now suppose you want to know exactly how the myClass style definition is defined. Just place your cursor

You can use the following server-side code to get the name of the currently executing ASP.NET page (e.g. default.aspx, hello.aspx). string sPagePath = System.Web.HttpContext.Current.Request.Url.AbsolutePath; System.IO.FileInfo oFileInfo = new System.IO.FileInfo(sPagePath); string

In XAML, you can hook an application-level event that will fire whenever an unhandled error occurs anywhere in your application by overriding the OnStartup event in the App.xaml.cs file. Here’s

The HttpWebRequest object makes it easy to check whether a web site is available or a URL is valid. Its HttpStatusCode property returns the status code from the request, which

In some cases, the JavaScript triple equals sign operator can simplify variable type and value checking. The operator tests both type and value for equivalency. Here’s a simple example HTML