Web.config Custom Errors mode Conflict

Question

I have a great and important problem with Web.Config, I need to see the Error of my page and resolve it in asp.net web form and web config, but when Error Occurred, I see an

Answer 1

Here is sample code how you can display exceptions on custom page.

First create Default.aspx with button:

Add following code for button click event:

    protected void Button1_Click(object sender, EventArgs e)
    {
        throw new Exception("Sample Exception on my Page");
    }

Second create ErrorPage.aspx with label:

And code for error page:

    protected void Page_Load(object sender, EventArgs e)
    {
        Exception ex = Server.GetLastError();
        if (ex != null && ex.InnerException != null)
        {
            Label1.Text = string.Format("An error occured: {0}", ex.InnerException.Message);
        }
    }

And finally place following configuration in web.config:

Compile and start with Default.aspx. Click your button and error will be shown on your custom page.

Happy coding!