How to upload file to server side using ajax jquery ASP.NET

Question

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i want to upload file selected using using ajax jquery at client side(homepage.html) and upload it to the server side (process.aspx.cs). can any one provide me the sample code?

What I have tried:

Client Side Code (homepage.html)

JavaScript

var file = $('#file')[0].files[0];
            $.ajax({
                type: "POST",
                url: "process.aspx/getFile",
                contentType: "application/json; charset=utf-8",
                data: "{'file': '" + Json.stringify(file) + "'}",
                dataType: "json",
                success: function (response) {
                    console.log(response.d);
                },
                failure: function (response) {
                    alert(response.d);
                }
            });

Server Side code (process.aspx.cs)

C#

public static void getFile(string file) {
            
        }

Posted 26-Feb-18 20:38pm

alpacaheng

Updated 4-Dec-18 23:11pm

v4

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Comments

Sinisa Hajnal 27-Feb-18 3:31am

Did you google it? I would expect you could find plenty of results. You should stringify entire data object, not just filename.

F-ES Sitecore 27-Feb-18 5:30am

This is extensively documented, please do basic research before asking a question, you can easily find the code to do this if you google.

As for finding the file path on the server use Server.MapPath to convert a path like "~/MyUploadFiles/mypic.jpg" to a physical path like "c:\inetnetpub\wwwroot\..."

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Afzaal Ahmad Zeeshan · Answer 1 · 2018-02-26T21:06:00

Some minor issues in the code include the naming of the JSON helper, see here, JSON.stringify() - JavaScript | MDN[^] — notice the capitalization of JSON. Another thing that intrigues me, is, why are you stringifying the image? Did you intent to convert to base64? How to convert image into base64 string using javascript - Stack Overflow[^].

Since you wanted to do this using JavaScript (Ajax), there is a much simpler and easier way to handle this... Where you can submit files directly without having to mess up with the base 64. You need to check what enctype does your form is currently set to; it must be multipart/form-data. That is the only tricky part in this entire domain. Once that is done, you can even capture the file using, Request.Files collection.

I wrote a complete article with the sample code that you can use for this, please see: Uploading the Files – HTML5 and jQuery Way![^]

PRAKASH9 · Answer 2 · 2018-12-04T23:11:00

try using this code

if (Request.Files.Count > 0)
{
    HttpFileCollection files = Request.Files;
    for (int i = 0; i < files.Count; i++)
    {
        HttpPostedFile postedFile = files[i];
        string savepath = "";
        string filename = Guid.NewGuid().ToString();
        postedFile.SaveAs(savepath + @"\" + filename);
    }
}

How to upload file to server side using ajax jquery ASP.NET

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