ASP.net MVC Downloading Excel
I have managed to create the Excel file using HTMLTextwriter, but the returned file is into a Javascript function.
The view code is:
<input type="submit" id = "exportExcelBtn" class = "searchButton" value="Export To Excel"
onclick= "ExportToExcel();"/>
The JS function then gets the data required for the control action, and then calls the relevant action, as such:
$.ajax({
type: "GET",
url: "/Search/ExportToExcel",
data: { //parameters },
error: function (error) {
alert(error.responseText);
},
success: function (data) {
alert("success");
alert(data);
}
});
The Excel file is created, by deriving from ActionResult, and returned back to the JS method. The created Excel file is written to the browser as such:
HttpContext context = HttpContext.Current;
context.Response.Clear();
context.Response.AddHeader("content-disposition", "attachment;filename=" + fileName);
context.Response.Charset = "";
context.Response.Cache.SetCacheability(H开发者_C百科ttpCacheability.NoCache);
context.Response.ContentType = contentType;
context.Response.Write(content);
context.Response.End();
How then can I get that file downloaded to the users computer?
I can easily just use File.WriteAllText in the model method, but I feel that is cheating the MVC method?
You can't use File.WriteAllText
in the model.
That will write it to the server.
You need to set the location
to a URL that returns the contents of the Excel file.
The correct way to do that in MVC is to return File(content,"application/x-ms-excel", fileName)
You are sending the Excel file itself as a response to an AJAX request. This will require JavaScript to recognize and parse the file, and, more importantly, to save it to disk. This is inappropriate (and, probably, impossible).
I recommend you to get rid of AJAX, and open the link /Search/ExportToExcel
in another browser window. Then the browser (not your JS, but the browser) will be receiving the file and saving it.
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