[SOLVED] Getting Thread Abort Exception while using Response.Redirect()

Issue

I wrote the following piece of code in a page which is under Update Panel.

protected void myGrid_RowCommand(object sender, GridViewCommandEventArgs e)
{
    try
    {
        if (e.CommandName =="EditNames")
        {
            long lSelectedName = Convert.ToInt64(e.CommandArgument);
            Session["SelectedItem"] = lSelectedName;
            Response.Redirect("EditItem.aspx");
        }
        else if (e.CommandName =="DeleteNames")
        {
            long lSelectedName = Convert.ToInt64(e.CommandArgument);
            ValidName.DeleteItem(lSelectedName);

            ScriptManager.RegisterStartupScript(this, GetType(), "Key", "alert('Name deleted sucessfully')", true);
        }
    }
    catch (System.Threading.ThreadAbortException)
    {

    }
    catch (Exception ex)
    {
        Error handling code...
    }
}

Here, I am getting a Thread Abort Exception while redirecting. However, I resolved it by using an error handler System.Threading.ThreadAbortException.

But I am unsure why that error came while redirecting. Even though I solved this problem, I would like to know is there any mistake in the way I am coding or is there any way to stop the error firing at all.

Give your inputs…

Note that the page is under AJAX UPDATE PANEL.

Solution

Even though, i solved this problem , i would like to know is there any mistake in the way i am coding

No mistake, you’ve done well.

This error is expected. It’s thrown because the server thread is in fact aborted when redirecting. From the MSDN documentation:

If you specify true for the endResponse parameter, this method calls the End method for the original request, which throws a ThreadAbortException exception when it completes.

and the documentation for the overload you’re using:

Redirect calls End which throws a ThreadAbortException exception upon completion.

Answered By – Mike Perrenoud

Answer Checked By – Mary Flores (BugsFixing Volunteer)

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