我知道整个答案并不能直接解决您的问题，而更像是一种解决方法。这是因为我不熟悉您使用的自定义控件。不过，我今晚会看看你的问题，看看我是否能找到你当前使用的代码和插件的解决方案。
同时，我可能会给您一些关于我自己使用的 ajax 上传的想法。我知道这是一大块代码，但如果你有兴趣，你可以去看看：）
我的例子
我在自己的网站上有一个上传控件，它与 umbraco 完美配合。
表单和上传由 jQuery 提供支持（上传由 jQuery.AjaxUpload 插件处理）
我在我的 umbraco 文件夹中创建了一个通用处理程序，用于处理服务器上的文件。
在媒体库中为它创建一个媒体项目（在我的情况下，在您的个人资料页面上作为头像上传器，它还将新创建的媒体项目添加到成员的头像属性中）
jQuery 代码：（存储在页面头部的脚本块中，或单独的脚本中）
initializeChangeAvatarForm = function() {
var button = $('#submitChangeAvatar'), interval;
new AjaxUpload(button,{
action: '/umbraco/AjaxFileUpload.ashx',
name: 'myfile',
onSubmit : function(file, ext){
// change button text to uploading + add class (with animating background loading image)
button.text('Uploading').addClass('loading');
// If you want to allow uploading only 1 file at time,
// you can disable upload button
this.disable();
},
onComplete: function(file, response){
button.text('Upload nieuw').removeClass('loading');
// Although plugins emulates hover effect automatically,
// it doens't work when button is disabled
button.removeClass('hover');
window.clearInterval(interval);
// enable upload button
this.enable();
}
});
};
$(document).ready(function(){
initializeChangeMailForm();
});
html代码在你的身体：
<div id="container"><h2>Upload Avatar</h2><button class="button" id="submitChangeAvatar" type="button">Upload new</button></div>
jQuery ajaxupload 插件：(/scripts/jQuery.ajaxupload.js)
'因为这段代码太长，所以我直接添加了一个指向我使用的 .js 文件的链接
'以及另一个指向我获得插件的页面的链接
处理程序 .ashx：（存储在 /umbraco/AjaxFileUpload.ashx 中）
using System;
using System.Collections;
using System.Data;
using System.Web;
using System.Web.SessionState;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.IO;
using System.Xml;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using umbraco.BusinessLogic;
using umbraco.cms.businesslogic.member;
namespace SH.umbServices
{
/// <summary>
/// Summary description for $codebehindclassname$
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
public class AjaxFileUpload : IHttpHandler, IRequiresSessionState
{
public void ProcessRequest(HttpContext context)
{
string strResponse = "error";
try
{
//string strFileName = Path.GetFileName(context.Request.Files[0].FileName);
//string strExtension = Path.GetExtension(context.Request.Files[0].FileName).ToLower();
//string strSaveLocation = context.Server.MapPath("../images/temp") + "\\" + strFileName;
//context.Request.Files[0].SaveAs(strSaveLocation);
UmbracoSave(context);
strResponse = "success";
}
catch
{
}
context.Response.ContentType = "text/plain";
context.Response.Write(strResponse);
}
public bool IsReusable
{
get
{
return false;
}
}
#region "umbMediaItem"
protected string UmbracoSave(HttpContext context)
{
string mediaPath = "";
if (context.Request.Files[0] != null)
{
if (context.Request.Files[0].FileName != "")
{
// Find filename
string _text = context.Request.Files[0].FileName;
string _ext = Path.GetExtension(context.Request.Files[0].FileName);
string filename;
string _fullFilePath;
//filename = _text.Substring(_text.LastIndexOf("\\") + 1, _text.Length - _text.LastIndexOf("\\") - 1).ToLower();
filename = Path.GetFileName(_text);
string _filenameWithoutExtention = filename.Replace(_ext, "");
int _p = 1212; // parent node.. -1 for media root)
// create the Media Node
umbraco.cms.businesslogic.media.Media m = umbraco.cms.businesslogic.media.Media.MakeNew(
_filenameWithoutExtention, umbraco.cms.businesslogic.media.MediaType.GetByAlias("image"), User.GetUser(0), _p);
// Create a new folder in the /media folder with the name /media/propertyid
System.IO.Directory.CreateDirectory(System.Web.HttpContext.Current.Server.MapPath(umbraco.GlobalSettings.Path + "/../media/" + m.Id.ToString()));
_fullFilePath = System.Web.HttpContext.Current.Server.MapPath(umbraco.GlobalSettings.Path + "/../media/" + m.Id.ToString() + "/" + filename);
context.Request.Files[0].SaveAs(_fullFilePath);
// Save extension
//string orgExt = ((string)_text.Substring(_text.LastIndexOf(".") + 1, _text.Length - _text.LastIndexOf(".") - 1));
string orgExt = Path.GetExtension(context.Request.Files[0].FileName).ToLower();
orgExt = orgExt.Trim(char.Parse("."));
try
{
m.getProperty("umbracoExtension").Value = orgExt;
}
catch { }
// Save file size
try
{
System.IO.FileInfo fi = new FileInfo(_fullFilePath);
m.getProperty("umbracoBytes").Value = fi.Length.ToString();
}
catch { }
// Check if image and then get sizes, make thumb and update database
if (",jpeg,jpg,gif,bmp,png,tiff,tif,".IndexOf("," + orgExt + ",") > 0)
{
int fileWidth;
int fileHeight;
FileStream fs = new FileStream(_fullFilePath,
FileMode.Open, FileAccess.Read, FileShare.Read);
System.Drawing.Image image = System.Drawing.Image.FromStream(fs);
fileWidth = image.Width;
fileHeight = image.Height;
fs.Close();
try
{
m.getProperty("umbracoWidth").Value = fileWidth.ToString();
m.getProperty("umbracoHeight").Value = fileHeight.ToString();
}
catch { }
// Generate thumbnails
string fileNameThumb = _fullFilePath.Replace("." + orgExt, "_thumb");
generateThumbnail(image, 100, fileWidth, fileHeight, _fullFilePath, orgExt, fileNameThumb + ".jpg");
image.Dispose();
}
mediaPath = "/media/" + m.Id.ToString() + "/" + filename;
m.getProperty("umbracoFile").Value = mediaPath;
m.XmlGenerate(new XmlDocument());
Member mbr = Member.GetCurrentMember();
umbraco.cms.businesslogic.property.Property avt = mbr.getProperty("memberAvatar");
avt.Value = m.Id;
mbr.XmlGenerate(new XmlDocument());
mbr.Save();
//string commerceFileName = mediaPath;
//CommerceSave(commerceFileName);
}
}
return mediaPath;
}
protected void generateThumbnail(System.Drawing.Image image, int maxWidthHeight, int fileWidth, int fileHeight, string fullFilePath, string ext, string thumbnailFileName)
{
// Generate thumbnail
float fx = (float)fileWidth / (float)maxWidthHeight;
float fy = (float)fileHeight / (float)maxWidthHeight;
// must fit in thumbnail size
float f = Math.Max(fx, fy); //if (f < 1) f = 1;
int widthTh = (int)Math.Round((float)fileWidth / f); int heightTh = (int)Math.Round((float)fileHeight / f);
// fixes for empty width or height
if (widthTh == 0)
widthTh = 1;
if (heightTh == 0)
heightTh = 1;
// Create new image with best quality settings
Bitmap bp = new Bitmap(widthTh, heightTh);
Graphics g = Graphics.FromImage(bp);
g.SmoothingMode = SmoothingMode.HighQuality;
g.InterpolationMode = InterpolationMode.HighQualityBicubic;
g.PixelOffsetMode = PixelOffsetMode.HighQuality;
// Copy the old image to the new and resized
Rectangle rect = new Rectangle(0, 0, widthTh, heightTh);
g.DrawImage(image, rect, 0, 0, image.Width, image.Height, GraphicsUnit.Pixel);
// Copy metadata
ImageCodecInfo[] codecs = ImageCodecInfo.GetImageEncoders();
ImageCodecInfo codec = null;
for (int i = 0; i < codecs.Length; i++)
{
if (codecs[i].MimeType.Equals("image/jpeg"))
codec = codecs[i];
}
// Set compresion ratio to 90%
EncoderParameters ep = new EncoderParameters();
ep.Param[0] = new EncoderParameter(Encoder.Quality, 90L);
// Save the new image
bp.Save(thumbnailFileName, codec, ep);
bp.Dispose();
g.Dispose();
}
#endregion
}
}
我希望这对我使用的东西有所帮助。