Question

I need to add an “are you sure” popup window to a delete button and I am not sure how to get whether the user clicked Ok or Cancel.

Here is how I do it:

string message = "Are you sure you want to delete this user?";
            System.Text.StringBuilder sb = new System.Text.StringBuilder();
            sb.Append("return confirm('");
            sb.Append(message);
            sb.Append("');");
            Type type = this.GetType();
            ClientScript.RegisterOnSubmitStatement(type, "alert", sb.ToString());

Answer 1

You could just set OnClientClick on the button to:

return confirm("Are you sure you want to delete this user?");

Then the submit/postback won’t happen if the user doesn’t click OK.