Open Confirmation box from server side

Hi,

Here i am call a client side function and store its result in hidden field control.In button click event get that hidden value and checked out the condition.

Try this...i think its useful to you...

In Source Page.....

<asp:button id="btnOk" runat="server" text="Ok" onclientclick="Confirm();" onclick="btnOk_Click" xmlns:asp="#unknown" />
<asp:hiddenfield id="hdfValue" runat="server" xmlns:asp="#unknown" />

Call this function in OnClientClick of the button

<script type="text/javascript">
function Confirm()
{
   var sResult = confirm("Do you want to Proceed?");
   document.getElementById("hdfValue").value = sResult; 
}
</script>

In Code page...

protected void btnOk_Click(object sender, EventArgs e)
{
    // If Ok means
    if(hdfValue.Value.Equals(true))
    {
         // Your Code
    } 
    else
    {
         // Your Code
    } 
}

Cheers :)

One of the ways I deal with this is using the jquery alerts[^] plugin for jQuery

You can create a little wrapper function around the confirmation function as follows

SomeNamespace.doConfirm = function (source, message, title) {
    jConfirm(message, title, function(r) {
        if (r == true) {
            __doPostBack(source.id, '');
        }
    });
    return false;
};

NB: The __doPostBack script function is the standard way asp.net web forms postback to the server and invoke the particular event handler for the control that raised the event.

Now, you can attach the script to your button in your page Load

protected void Page_Load(object sender, EventArgs e)
{
    if (!Page.IsPostBack)
    {
        this.btnSelectInvioces.Attributes.Add("onclick", "return SomeNamespace.doConfirm(this, 'Are you sure you want to do this?', 'Prompt Title');");
    }
}

Now when you click on the button, you'll see a confirmation dialog on the client. No postback has happened at this point.

If you click OK, then the standard btnSelectInvioces_Click event handler will be invoked. If you click No, no postback will occur

Instead of using Response.Write, I would suggest you try using:
Page.RegisterClientScriptBlock Method [^] OR Page.RegisterStartupScript Method[^]

Using them, you can inject the scripts into a page from server side and based on certain condition (and specific to page.)
For samples on how to use it: How to Use RegisterClientScriptBlock & RegisterStartupScript[^]
Sample 2[^]