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這是AJAX調用，它是調用控制器MVC AJAX不是下載文件
@using(Html.BeginForm("ExportData", "ViewData", FormMethod.Post,
new {
id = "myform", name = "myform"
})) {
<button type = "submit"> Export Raw Policy </button>
}
<div id = "divProcessing"> <img src = ~/assets/layouts/layout3/img/loading-spinner-blue.gif" > </p> </div>
@section Scripts {
@Scripts.Render("~/bundles/jqueryval")
<script type = "text/javascript" >
$(document)
.ready(function() {
// Hide the "busy" Gif at load:
$("#divProcessing").hide();
// Handle the form submit event, and make the Ajax request:
$("#myform")
.on("submit",
function(event) {
event.preventDefault();
// Show the "busy" Gif:
$("#divProcessing").show();
var url = $(this).attr("action");
var formData = $(this).serialize();
$.ajax({
url: url,
type: "POST",
data: formData,
dataType: "json",
contentType: 'application/json; charset=utf-8',
success: function(resp) {
// Hide the "busy" gif:
$("#divProcessing").hide();
// Do something useful with the data:
$("<h3></h3>")
.appendTo("#divResult");
}
})
});
}); </script>
}
此方法導出數據表到Excel
public static void ExportToExcel(DataTable table)
{
try
{
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.ClearContent();
HttpContext.Current.Response.ClearHeaders();
HttpContext.Current.Response.Buffer = true;
HttpContext.Current.Response.ContentType = "application/ms-excel";
HttpContext.Current.Response.Write(@"<!DOCTYPE HTML PUBLIC ""-//W3C//DTD HTML 4.0 Transitional//EN"">");
HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment;filename=Reports.xls");
HttpContext.Current.Response.Charset = "utf-8";
HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.GetEncoding("windows-1250");
//sets font
HttpContext.Current.Response.Write("<font style='font-size:10.0pt; font-family:Calibri;'>");
HttpContext.Current.Response.Write("<BR><BR><BR>");
//sets the table border, cell spacing, border color, font of the text, background, foreground, font height
HttpContext.Current.Response.Write("<Table border='1' bgColor='#ffffff' " +
"borderColor='#000000' cellSpacing='0' cellPadding='0' " +
"style='font-size:11.0pt; font-family:Calibri; background:white;'> <TR>");
//am getting my grid's column headers
int columnscount = table.Columns.Count;
for (int j = 0; j < columnscount; j++)
{
//write in new column
HttpContext.Current.Response.Write("<Td>");
//Get column headers and make it as bold in excel columns
HttpContext.Current.Response.Write("<B>");
HttpContext.Current.Response.Write(table.Columns[j].ToString());
HttpContext.Current.Response.Write("</B>");
HttpContext.Current.Response.Write("</Td>");
}
HttpContext.Current.Response.Write("</TR>");
foreach (DataRow row in table.Rows)
{
//write in new row
HttpContext.Current.Response.Write("<TR>");
for (int i = 0; i < table.Columns.Count; i++)
{
HttpContext.Current.Response.Write("<Td>");
HttpContext.Current.Response.Write(HttpContext.Current.Server.HtmlEncode(row[i].ToString()));
HttpContext.Current.Response.Write("</Td>");
}
HttpContext.Current.Response.Write("</TR>");
}
HttpContext.Current.Response.Write("</Table>");
HttpContext.Current.Response.Write("</font>");
HttpContext.Current.Response.Flush();
HttpContext.Current.Response.End();
}
catch (Exception ex)
{
string abc = ex.ToString();
}
}
這是我的控制器
public ActionResult ExportData()
{
var industryData = _rawDataHlper.GetIndustryData();
if (industryData != null)
{
ExportToExcel((industryData));
}
return RedirectToAction("Index");
}
上述代碼正在進行ajax調用並調用控制器。控制器正在將數據表下載到excel中。
如果我打電話給沒有Ajax調用的控制器，那麼它會下載excel文件，但是當我做ajax調用時，它不下載excel文件。
代碼正在調用正確的控制器和操作，但它不下載文件。
有誰能告訴我這裏有什麼問題。它工作正常，沒有Ajax。
任何幫助，將不勝感激。
在此先感謝。
'數據類型：[文件]類型，你希望從聲明的server.'回數據（HTTP：//api.jquery .COM/jque ry.ajax /）只要刪除它。 – Qsprec
是的，我試圖通過刪除，但仍然無法工作 –
我搜索了一下，因爲@madalin說你不能用ajax做到這一點。 Ajax不允許您將文件下載到您的計算機。 [其他線程]（http://stackoverflow.com/questions/4545311/download-a-file-by-jquery-ajax） – Qsprec