How to Test and Debug an ASP.NET Application—How to enable the Trace feature

Microsoft .NET Framework, ASP.NET, Visual C# (CSharp, C Sharp, C-Sharp) Developer Training, Visual Studio

How to enable the Trace feature

To use the Trace feature, you must first enable tracing. To do that, you add a Trace attribute to the Page directive for the page, and you assign a value of True to this attribute. Then, when you run the page, trace information will be displayed at the end of the page output, as shown in figure 4-15.

When you enable the Trace feature, it is enabled only for the current page, which is usually what you want. To enable tracing for another page, you must modify the Page directive for that page too. Once this feature has been enabled for a page, ASP.NET adds trace output to the page whenever the page is requested.