sharepoint2013上传控件

HttpContext.Current.Server.MapPath

<asp:FileUpload ID="FileUpload1" runat="server" />
<asp:Button ID="btnUpload" runat="server" OnClick="btnUpload_Click" Text="上传" /> 
<asp:Label ID="resultlbl" runat="server"></asp:Label>
 


<body>
        
        <div style="position:static;">
                <div class="style1">
        演示文件上传控件
         
                </div>
        
                <div class="style1">
        
                <asp:FileUpload ID="File1" runat="server"/>
                <asp:Button ID="UploadBtn" runat="server" onclick="Button1_Click" Text="上传" />
                </div>
        </div>
        <asp:Label ID="Label1" runat="server" 
                Width="437px" Height="61px"></asp:Label>
        
</body>

 protected void btnUpload_Click(object sender, EventArgs e)
        {
            Boolean fileOk = false;
            string path = Server.MapPath("~/upload/");

            //判断是否已经选取文件
            if (FileUpload1.HasFile)
            {
                //取得文件的扩展名,并转换成小写
                string fileExtension = System.IO.Path.GetExtension(FileUpload1.FileName).ToLower();
                //限定只能上传jpg和gif图片
                string[] allowExtension = { ".jpg", ".gif", ".txt", ".xls" };
                //对上传的文件的类型进行一个个匹对
                for (int i = 0; i < allowExtension.Length; i++)
                {
                    if (fileExtension == allowExtension[i])
                    {
                        fileOk = true;
                        break;
                    }
                }
                //
                if (fileOk)
                {
                    resultlbl.Text = "要上传的文件类型不对！";
                }

                //对上传文件的大小进行检测，限定文件最大不超过1M
                if (FileUpload1.PostedFile.ContentLength > 1024000)
                {
                    fileOk = false;
                }
                //最后的结果
                if (fileOk)
                {
                    try
                    {
                        FileUpload1.PostedFile.SaveAs(path + FileUpload1.FileName);
                        resultlbl.Text = "上传成功";
                    }
                    catch
                    {

                        resultlbl.Text = "上传失败";
                    }
                }
                else
                {
                    resultlbl.Text = "文件类型或者文件大小超出１Ｍ或者文件类型不对";

                }

            }
        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            string FileName = File1.PostedFile.FileName;
            string file_str = "文件名称：" + FileName + "<br>";
            file_str = "文件类型：" + File1.PostedFile.ContentType + "<br>";
            file_str = "文件长度：" + File1.PostedFile.ContentLength.ToString() + "KB<br>";

//上传文件到服务器
            string upload_file = HttpContext.Current.Server.MapPath("~/789/123") + FileName;//取出服务器虚拟路径,文件存储在服务器上传的路径

            File1.PostedFile.SaveAs(upload_file);//开始上传文件
             Label1.Text = file_str + "<a  href='" + upload_file + "' target='_blank' >" + FileName + "</a>" + "上传文件成功";//获取的名字带链接



             Label1.Text = file_str + "<a href='#'>"+FileName+"</a>" + "上传文件成功";//获取的名字带链接
        }
    }
}