Open jQuery confirmation based on another confirmation box Button Click using C# and VB.Net

Hi kevinf,

Please refer below sample.

HTML

Age:
<asp:TextBox runat="server" ID="txtAge" />
<asp:Button Text="Dialog" ID="btnDialog" runat="server" OnClick="bDelete_Click" />
<asp:Button Text="Yes" ID="btnYes" runat="server" OnClick="OnYes" Style="display: none;" />
<asp:Button Text="No" ID="btnNo" runat="server" OnClick="OnNo" Style="display: none;" />
<asp:Button Text="Cancel" ID="btnCancel" runat="server" OnClick="OnCancel" Style="display: none;" />
<asp:HiddenField ID="hfYesMessage" runat="server" />
<div id="dialog"></div>

<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<script type="text/javascript" src="https://ajax.aspnetcdn.com/ajax/jquery.ui/1.8.9/jquery-ui.js"></script>
<link rel="stylesheet" type="text/css" href="https://ajax.aspnetcdn.com/ajax/jquery.ui/1.8.9/themes/blitzer/jquery-ui.css" />
<script type="text/javascript">
    function ShowPopup(message) {
        $("#dialog").html(message);
        $("#dialog").dialog({
            title: "Information",
            modal: true,
            buttons: {
                Yes: function () {
                    $(this).dialog('close');
                    $('[id*=btnYes]').trigger('click');
                },
                No: function () {
                    $(this).dialog('close');
                    $('[id*=btnNo]').trigger('click');
                },
                Cancel: function () {
                    $(this).dialog('close');
                    $('[id*=btnCancel]').trigger('click');
                }
            }
        });
    };
</script>

Code

C#

protected void bDelete_Click(object sender, EventArgs e)
{
    string message = "Do You Wish to Delete";
    ClientScript.RegisterStartupScript(this.GetType(), "Popup", "ShowPopup('" + message + "');", true);
}

protected void OnYes(object sender, EventArgs e)
{
    int age = int.Parse(txtAge.Text);
    if (age < 21 && string.IsNullOrEmpty(hfYesMessage.Value))
    {
        string message = "Age Is Under 21 Continue Yes or No to correct Age or Cancel to Exit";
        hfYesMessage.Value = message;
        ClientScript.RegisterStartupScript(this.GetType(), "Popup", "ShowPopup('" + message + "');", true);
    }
    else
    {
        hfYesMessage.Value = string.Empty;
        ClientScript.RegisterStartupScript(this.GetType(), "Popup", "alert('Record deleted.');", true);
    }
}

protected void OnNo(object sender, EventArgs e)
{
    ClientScript.RegisterStartupScript(this.GetType(), "Popup", "alert('You clicked No.');", true);
}

protected void OnCancel(object sender, EventArgs e)
{
    ClientScript.RegisterStartupScript(this.GetType(), "Popup", "alert('You clicked Cancel.');", true);
}

VB.Net

Protected Sub bDelete_Click(ByVal sender As Object, ByVal e As EventArgs)
    Dim message As String = "Do You Wish to Delete"
    ClientScript.RegisterStartupScript(Me.GetType(), "Popup", "ShowPopup('" & message & "');", True)
End Sub

Protected Sub OnYes(ByVal sender As Object, ByVal e As EventArgs)
    Dim age As Integer = Integer.Parse(txtAge.Text)

    If age < 21 AndAlso String.IsNullOrEmpty(hfYesMessage.Value) Then
        Dim message As String = "Age Is Under 21 Continue Yes or No to correct Age or Cancel to Exit"
        hfYesMessage.Value = message
        ClientScript.RegisterStartupScript(Me.GetType(), "Popup", "ShowPopup('" & message & "');", True)
    Else
        hfYesMessage.Value = String.Empty
        ClientScript.RegisterStartupScript(Me.GetType(), "Popup", "alert('Record deleted.');", True)
    End If
End Sub

Protected Sub OnNo(ByVal sender As Object, ByVal e As EventArgs)
    ClientScript.RegisterStartupScript(Me.GetType(), "Popup", "alert('You clicked No.');", True)
End Sub

Protected Sub OnCancel(ByVal sender As Object, ByVal e As EventArgs)
    ClientScript.RegisterStartupScript(Me.GetType(), "Popup", "alert('You clicked Cancel.');", True)
End Sub

Screenshot