在c＃中将画布数据作为图像发送到服务器 [英] Sending canvas data as a image to server in c#

问题描述

我正在尝试使用以下功能将画布图像发送到服务器，但功能无法执行此操作。我没有收到错误的地方，请帮忙...

Hi ,

I am trying to send canvas image to server using following function, but function is unable to do so. I am not getting where error occurred ,Please help...

function UploadPic() {
        // Generate the image data
        var Pic = document.getElementById('cnvEdit').toDataURL("image/png");
        Pic = Pic.replace(/^data:image\/(png|jpg);base64,/, "");
        // Sending the image data to Server
        $.ajax({
            type: 'POST',
            url: 'Save_Picture.aspx/UploadPic',
            data: '{ "imageData" : "' + Pic + '" }',
            contentType: 'application/json; charset=utf-8',
            dataType: 'json',
            success: function (msg) {
                alert('Done, Picture Uploaded.');
            }
        });
    }

推荐答案

.ajax（{
type：' POST'，
url：' Save_Picture.aspx / UploadPic'，
data：' {imageData： ' + Pic + ' }'，
contentType：' application / json; charset = utf-8'，
dataType：' json'，
成功： function （msg）{
alert（' 完成，上传图片。'）;
}
}）;
}

.ajax({ type: 'POST', url: 'Save_Picture.aspx/UploadPic', data: '{ "imageData" : "' + Pic + '" }', contentType: 'application/json; charset=utf-8', dataType: 'json', success: function (msg) { alert('Done, Picture Uploaded.'); } }); }

您可以使用方法 canvas.toDataURL（type，jpegquality）：

http：// msdn。 microsoft.com/en-us/library/ie/ff975241%28v=vs.85%29.aspx [ ^ ]。



祝你好运，

-SA

You can use the method canvas.toDataURL(type, jpegquality):
http://msdn.microsoft.com/en-us/library/ie/ff975241%28v=vs.85%29.aspx[^].

Good luck,

—SA

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