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POExporting HTML Table to Excel via Page Method
 

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  1. POExporting HTML Table to Excel via Page Method
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    <p>I have the following code on the client side for retrieving data from the HTML Table and then send it to the server through the page method:</p> <pre><code>function dtExportToCSV(dataTable) { var elements = dtDataToJSON(dataTable); var headers = dtHeadersToJSON(tableSelector); jQuery.ajax({ type: "POST", url: "Report.aspx/exportToCSV", data: "{'elements': " + elements + ", 'headers': " + JSON.stringify(headers) + "}", contentType: "application/json; charset=utf-8", dataType: "json", success: function(msg) { if (msg.d) { } else { } }, error: function(xhr, ajaxOptions, thrownError) { alert(xhr.statusText); } }); } </code></pre> <p>Then I use the following code on the server side, to export the retrieved data to CSV file.</p> <pre><code>/// &lt;summary&gt; /// /// &lt;/summary&gt; /// &lt;param name="elements"&gt;&lt;/param&gt; /// &lt;param name="headers"&gt;&lt;/param&gt; [WebMethod(EnableSession=true)] [ScriptMethod(ResponseFormat = ResponseFormat.Json)] public static bool exportToCSV(List&lt;object&gt; elements, List&lt;string&gt; headers) { try { string attachmentType = "attachment; filename=ShortageReport.csv"; HttpContext.Current.Response.Clear(); HttpContext.Current.Response.ClearHeaders(); HttpContext.Current.Response.ClearContent(); HttpContext.Current.Response.AddHeader("content-disposition", attachmentType); HttpContext.Current.Response.ContentType = "text/csv"; HttpContext.Current.Response.AddHeader("Pragma", "public"); writeHeadersInfo(headers); HttpContext.Current.Response.End(); } catch (Exception ex) { Console.WriteLine(ex.Message); } return false; } </code></pre> <p>But I get this expcetion: <strong><em>Unable to evaluate expression because the code is optimized or a native frame is on top of the call stack.</em></strong></p> <p>Does anyone knows how to handle this issue?</p> <p>Any help would be highly appreciated! Thanks in Advance!</p> <p>~ Eder Quiñones</p>
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