使用.net Webservice发送以像素为单位的图像

Question

i wrote a webservice for send image in pixels form. it is working fine but when we give large amount of data in parameter it do not take full data. it take limited data or small image. is this parameter limit? or How i give large data in parameter?

Here is my code

    [WebMethod]
    public XmlDocument testuploadimage(string image)
    {

        XmlDocument login = new XmlDocument();
        XmlDeclaration dec = login.CreateXmlDeclaration("1.0", null, null);
        login.AppendChild(dec);
        XmlElement root = login.CreateElement("CreateUser");
        login.AppendChild(root);

        try
        {

                string actFolder = Server.MapPath("~/Images/");
                string s = image.Replace(" ", string.Empty);


                string imgname = DateTime.UtcNow.ToString().Replace(" ", "").Replace("AM", "").Replace("PM", "").Replace("/", "").Replace("-", "").Replace(":", "") + ".png";
                //       string imgname = DateTime.UtcNow.ToString("yyyyMMddHHmm") + ".png";

                byte[] imageBytes = Convert.FromBase64String(image.Replace(" ","+"));
                MemoryStream ms = new MemoryStream(imageBytes, 0, imageBytes.Length);
                // MemoryStream ms = new MemoryStream(imageBytes);
                // Convert byte[] to Image
                //  ms.Write(imageBytes, 0, imageBytes.Length);

                Image image2 = Image.FromStream(ms);
                image2.Save(actFolder + imgname);


                XmlElement root1 = login.CreateElement("uploaded");
                root1.InnerText = "true";
                root.AppendChild(root1);
                XmlElement root2 = login.CreateElement("path");
                root2.InnerText = "http://Myserver/HeritageWebServices/Images/" + imgname;
                root.AppendChild(root2);

                return login;

            }
            catch (Exception ex)
            {
                ErrLogMgr.LogErrorMessage(string.Format("{0}{1}", "testuploadimage() for the image :",
                                                       image), "testUploadimage Inputs",
                                                        ERRORSOURCE.CSASERVICE);
                XmlDocument cd = new XmlDocument();
                cd.LoadXml("<Message>" + ex + "</Message>");



                return cd;

Answer 1

Two things

Try to change the maxRequestLength on the web.config file.

i see that you are using base64 to send the image, you could try to compress the bytearray before convert it to base64, to reduce the image or try to convert to a more compressed image type (ej: bmp to png).

regards