Ask For Confirmation Before Submitting Data in ASP.NET

Here's a simple way to ask the user for confirmation before submitting data:

C#

protected void Page_Load(object sender, EventArgs e)

{

    string myScript = @"<script type='text/javascript'>

    function askBeforeSubmit() {

    var msg = 'Are you sure?';

    return confirm(msg);

    }

    </script>";

    Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "MakeSure", myScript);

    form1.Attributes.Add("onsubmit", "return askBeforeSubmit();");

}

VB.NET

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

        Dim myScript As String = "<script type='text/javascript'>" & ControlChars.CrLf & "    function askBeforeSubmit() {" & ControlChars.CrLf & "    var msg = 'Are you sure?';" & ControlChars.CrLf & "    return confirm(msg);" & ControlChars.CrLf & "    }" & ControlChars.CrLf & "    </script>"

        Page.ClientScript.RegisterClientScriptBlock(Me.GetType(), "MakeSure", myScript)

        form1.Attributes.Add("onsubmit", "return askBeforeSubmit();")

 

    End Sub

You can also ask for confirmation without writing any code. Just use the OnClientClick event on the button as shown below:

<asp:Button ID="btnMaster" runat="server" Text="Button"

OnClientClick="return confirm('Are you sure?');"/>