Throwing an Exception in C#

In C#, it is possible to throw an exception programmatically. The ‘throw’ keyword is used for this purpose. The general form of throwing an exception is as follows.

throw exception_obj;

Here I am explain you how throw an exception on the other Error page with the help of Global.asax file

we use try and catch block for exception handling .

 try
        {
            //logical part
        }
 catch (Exception ex)
        {
            throw (ex);
        }

we need Global.asax file for that , so simply create Gloal.asax file for this propose .

Here we need to write code on function Applicaion_Error and redirect the QueryString having Error type message to the page where we want to show the Error Message.

void Application_Error(object sender, EventArgs e)
    {
        // Code that runs when an unhandled error occurs

        Exception ex = Server.GetLastError().GetBaseException();

       
        Response.Redirect("ErrorPage.aspx?error=" + ex.Message);

    }

// GetLastError() use to get the current error

Here on the ErrorPage.aspx Page we get the Querystring and show the message ob label 

  lblErrorMessage.Text= Request.QueryString[0].ToString();