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copied!<p>Offhand, what you're doing should work. I've successfully done similar in the past, although I used a repeater and LinkButtons.</p> <p>The only thing I can see that's different is that you're using <code>Response.Write()</code> rather than <code>Response.OutputStream.Write()</code>, and that you're writing text rather than binary, but given the <code>ContentType</code> you specified, it shouldn't be a problem. Additionally, I call <code>Response.ClearHeaders()</code> before sending info, and <code>Response.Flush()</code> afterward (before my call to <code>Response.End()</code>). </p> <p>If it will help, here's a sanitized version of what works well for me:</p> <pre><code>// called by click handler after obtaining the correct MyFileInfo class. private void DownloadFile(MyFileInfo file) { Response.Clear(); Response.ClearHeaders(); Response.ContentType = "application/file"; Response.AddHeader("Content-Disposition", "attachment; filename=\"" + file.FileName + "\""); Response.AddHeader("Content-Length", file.FileSize.ToString()); Response.OutputStream.Write(file.Bytes, 0, file.Bytes.Length); Response.Flush(); Response.End(); } </code></pre> <p>You may want to consider transferring the file in a binary way, perhaps by calling <code>System.Text.Encoding.ASCII.GetBytes(viewXml);</code> and passing the result of that to <code>Response.OutputStream.Write()</code>.</p> <p>Modifying your code slightly:</p> <pre><code>protected void btnDownload_Click(object sender, EventArgs e) { string viewXml = exporter.Export(); byte [] bytes = System.Text.Encoding.ASCII.GetBytes(viewXml); // NOTE: you should use whatever encoding your XML file is set for. // Alternatives: // byte [] bytes = System.Text.Encoding.UTF7.GetBytes(viewXml); // byte [] bytes = System.Text.Encoding.UTF8.GetBytes(viewXml); Response.Clear(); Response.ClearHeaders(); Response.AddHeader("Content-Disposition", "attachment; filename=views.cov"); Response.AddHeader("Content-Length", bytes.Length.ToString()); Response.ContentType = "application/file"; Response.OutputStream.Write(bytes, 0, bytes.Length); Response.Flush(); Response.End(); } </code></pre>

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