How to call window.alert(“message”); from C#?

Question

I have my own exception based on some condition and want to raise an alert when control comes in this catch block

catch (ApplicationException ex)
{
    //want t         


        

Answer 1

You can use the following extension method from any web page or nested user control:

static class Extensions
{
    public static void ShowAlert(this Control control, string message)
    {
        if (!control.Page.ClientScript.IsClientScriptBlockRegistered("PopupScript"))
        {
            var script = String.Format("", message);
            control.Page.ClientScript.RegisterClientScriptBlock(control.Page.GetType(), "PopupScript", script);
        }
    }
}

like this:

class YourPage : Page
{
    private void YourMethod()
    {
        try
        {
            // do stuff
        }
        catch(Exception ex)
        {
            this.ShowAlert(ex.Message);
        }
    }
}