C#上传文件小函数

HTML：

1<asp:FileUpload ID="FileUpload1" runat="server" />

C#:

 1        文件上传函数#region 文件上传函数
 2        /**//// <summary>
 3        /// 文件上传函数
 4        /// </summary>
 5        /// <param name="_savePath">绝对路径 如E:\photo\</param>
 6        /// <returns></returns>
 7        protected string UploadFile(string _savePath)
 8        {
 9            string result=string.Empty; //返回结果
10
11            if (FileUpload1.HasFile)
12            {
13                string FileContentType = FileUpload1.PostedFile.ContentType;
14
15                if (FileContentType == "image/bmp" || FileContentType == "image/gif" || FileContentType == "image/pjpeg")
16                {
17                    string ClientFileName = FileUpload1.PostedFile.FileName; //客户端文件路径(包含文件名）
18
19                    FileInfo ObjFileInfo = new FileInfo(ClientFileName);
20
21                    string FileName = ObjFileInfo.Name; //文件名
22
23                    string webFileName = _savePath + FileName; //服务器端保存路径(包含文件名）
24
25
26                    if(!Directory.Exists(_savePath))
27                    {
28                        Directory.CreateDirectory(_savePath);
29                    }
30
31
32                    if (!File.Exists(webFileName))
33                    {
34                        try
35                        {
36                            FileUpload1.SaveAs(webFileName);
37
38                            result= "文件上传成功";
39                        }
40                        catch (Exception ex)
41                        {
42                            result= ex.Message;
43                        }
44                    }
45                    else
46                    {
47                        result= "文件已存在";
48                    }
49
50                }
51                else
52                {
53                    result= "文件类型不符";
54                }
55            }
56            /**/////
57
58            return result;
59        }
60        #endregion