问如何在C#中将TimeoutException和redirec设置为CustomErrorPage.aspx

EN

try
{
   command.Timeout=1; //which is in seconds for testing i have set it to one.
   //some code here
   // if TimeoutException occurs, it must go to following block which doesnthappen
   //And  it goes to catch 2: block..! Why is it so...?
}

//catch 1:
catch (TimeoutException ex)
{
     Response.Redirect("CustomError.aspx");

}

//catch 2:
catch (Exception ex)
{
     Response.Redirect("CustomError.aspx");
}