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POajax calls not being made after doPostBack
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copied!<p>I am making the users download a file on an anchor tag click. On its onclick event, i have used __doPostBack to partial post back the page to return the file which is downloadable by the user. </p> <p>Now the problem i am facing is, that when the file is not found, the page reloads and the ajax calls are not set. So, in short, when the browser is expecting a response after _doPostBack function, and does not get one, it reloads the page but $.ajax methods do not run. What am i missing? Should I do something with the response? or is there any way that the response can be cancelled? Please help.</p> <p>The anchor tag is, for instance </p> <pre><code><a onclick="javascript:__doPostBack('AnnouncementAttachmentDownload','Ch 7 -Software Design2010.doc')">Ch 7 -Software Design2010.doc</a> </code></pre> <p>The server side code is</p> <pre><code>protected void Page_Load(object sender, EventArgs e) { SetPageTitles(ModuleNames.NotSpecified, null, false, true, true, false); if (this.Request.Params["__EVENTTARGET"] == "AnnouncementAttachmentDownload") { string FileName = this.Request.Params["__EVENTARGUMENT"].ToString(); string destinationPath = Server.MapPath("~/" + System.Web.Configuration.WebConfigurationManager.AppSettings["AnnouncementAttachmentsPath"]).ToString() + "\\"; if (System.IO.File.Exists(destinationPath + FileName)) { Response.AppendHeader("content-disposition", "attachment; filename=" + FileName); Response.TransmitFile(destinationPath + FileName); Response.End(); } else { ClientScript.RegisterClientScriptBlock(this.GetType(), "NewScript", "alert('The requested file could not be found, please contact portal.production.support');", true);\\DOESNT WORK } } } </code></pre> <p>The line in the else part, it just shows the message but the page loads after that too.</p>

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