How to Open a Response.Redirect in a New Browser Window?

Redirecting to a New Browser Window

For a smoother user experience when using Response.Redirect, opening the redirected page in a new browser tab or window is often preferred. This avoids disrupting the current page. A straightforward method avoids the complexity of using JavaScript's register script function.

To achieve this, simply add a specific attribute to your server-side link or button:

OnClientClick="aspnetForm.target='_blank';"

Here's an example using a button:

<asp:Button ID="myButton" runat="server" Text="Click Me!" OnClick="myButton_Click" OnClientClick="aspnetForm.target='_blank';" />

In the server-side OnClick event (myButton_Click), execute your Response.Redirect. The redirected page will now open in a new window.

To prevent unintended behavior where all links open in new windows, include this JavaScript function in the header of your popup window:

function fixform() {
    if (opener.document.getElementById("aspnetForm").target != "_blank") return;
    opener.document.getElementById("aspnetForm").target = "";
    opener.document.getElementById("aspnetForm").action = opener.location.href;
}

And add this to the body tag of your popup window:

onload="fixform();"

This ensures that only the intended links open in new windows.

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