How to make the button_Click event opens the page in a pop-up window in ASP.NET?

The question is simple but I can't find a simple answer to it! .. btw I'll need to pass a QueryString to the page to be open.

Any i开发者_高级运维deas ?

You can actually link a javascript code into .NET with C#, below is an example, you could replace with your info, and push the parameters.

   Response.Write("<script type='text/javascript'>window.open('Page.aspx?ID=" + YourTextField.Text.ToString() + "','_blank');</script>");

You can append on the end of it ?Field=your value passing&nextField=another value.

Is the answer to do this in javascript. As you make the underlying page in asp.net, provide it with the javascript to catch the buttons onclick event and call window.open(URL)

It depends on what you're trying to do but the simplest is to use the OnClientClick property of the Button. Take a look at http://msdn.microsoft.com/en-us/library/7ytf5t7k.aspx, in particular the details bout this property a little bit down.

Basically you'd do something like

<asp:Button ID="Button1" Runat="server" 
        OnClientClick="ShowPopup();" 
        Text="Test Client Click" />

With the JS to do your popup

<script type="text/javascript">
    function ShowPopup() {
        window.open('ThankYou.aspx');
    }
</script>

You can also do both an OnClientClick and an OnClick if you need as well.

<asp:Button ID="Button1" Runat="server" 
      OnClick="Button1_Click" 
        OnClientClick="ShowPopup();" 
        Text="Test Client Click" />

Code behind

    protected void Button1_Click(Object sender, EventArgs e)
    {
        Label1.Text = "Server click handler called.";
    }