Show Javascript Confirm Alert Box in ASP.Net from Server Side using C# and VB.Net

 

In this article I will explain how to show javascript confirm alert popup in Asp.Net from the server side using C# and VB.Net. Here you can show the javascript alert popup in different events on page load and button submit.

Show confirm message when users submit the page (Page Load Event):

In the Page Loading event, the following JavaScript function will be recorded using the RegisterOnSubmitStatement function. The below javascript function display a confirm message to the user in a javascript alert popup. It will show the confirm message to the user when a user submits the page.

C#

protected void Page_Load(object sender, EventArgs e)
        {
            string message = "Do you want to Submit?";
            System.Text.StringBuilder sb = new System.Text.StringBuilder();
            sb.Append("return confirm('");
            sb.Append(message);
            sb.Append("');");
            ClientScript.RegisterOnSubmitStatement(this.GetType(), "alert", sb.ToString());
        }

VB.Net

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
    Dim message = "Do you want to Submit?"
    Dim sb As StringBuilder = New StringBuilder()
    sb.Append("return confirm('")
    sb.Append(message)
    sb.Append("');")
    ClientScript.RegisterOnSubmitStatement([GetType](), "alert", sb.ToString())
End Sub

Please mail me at hemanta@webcodespider.net if you want any code solution from me. 

Thank You 😊 

Show Javascript Alert Message in ASP.Net from Server Side using C# and VB.Net