I am using VS 2008 and C# but when I added namespace in web.config file, that namespace is not imported or included in code behind or aspx
I have also read this question but not get the required answer.
web.config code
<configuration>
<system.web>
<pages>
<namespaces>
<add namespace="System.Data" />
<add namespace="System.Text"/>
</namespaces>
</pages>
</system.web>
</configuration>
The purpose of the namespace section is to get around having to do the import in the .aspx page. Code behind in C# still requires you to have the using statements at the top of your .cs file.
There is no way to get around this.