图片上传

 protected void btnUpload_Click(object sender, EventArgs e)
        {
            Button btnupload = sender as Button;
            if (btnupload.ID.Equals("btnUpload"))//待补中的上传
            {
                if (!fuFileUp.HasFile)
                {
                    //ScriptManager.RegisterClientScriptBlock(this.upAttachment, this.GetType(), "", "alert('请选择要上传的文件！')", true);
                    ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('请选择要上传的文件！')", true);
                    return;
                }
            }
            string strUploadFile = ConfigHelper.GetConfigString("UploadFilePath");

            string remoteFilePath = AppDomain.CurrentDomain.SetupInformation.ApplicationBase + strUploadFile.TrimEnd('\\') + "\\" +
                              "\\Approval\\";
            if (!Directory.Exists(remoteFilePath))
            {
                Directory.CreateDirectory(remoteFilePath);
            }
            DataRow drNewRow = Attachment.NewRow();///加新行，都临时保存到viewState中
            drNewRow["AttachmentID"] = Guid.NewGuid();
            string strFileName = "";
            string strOrgFileName = "";
            strFileName = "/" + System.DateTime.Now.ToString("yyyyMMdd") + "_" + Guid.NewGuid() + Path.GetExtension(fuFileUp.FileName);
            strOrgFileName = fuFileUp.FileName; //文件名
            fuFileUp.PostedFile.SaveAs(remoteFilePath + strFileName);
            string remoteFileName = "http://www.cnblogs.com/" + strUploadFile + "/Approval" + strFileName;//相对路径
            drNewRow["ReferenceID"] = strInventoryID;
            drNewRow["FileName"] = strOrgFileName;
            drNewRow["FileType"] = strOrgFileName.Substring(strOrgFileName.LastIndexOf("."));
            drNewRow["FileFullName"] = remoteFileName;

            drNewRow["CreateBy"] = GetCurrentUser();
            drNewRow["CreateDate"] = DateTime.Now.ToString();
            drNewRow["ActiveFlag"] = (int)Common.CommonEnum.ActiveFlag.valid;

            Attachment.Rows.Add(drNewRow.ItemArray);
            LoadAttachment();
        }

  protected void rptAttachment_ItemCommand(object source, RepeaterCommandEventArgs e)
        {
            if (e.CommandName.Equals("Delete"))
            {
                if (Attachment != null && Attachment.Rows.Count > 0)
                {
                    DataRow[] drs = Attachment.Select("AttachmentID='" + e.CommandArgument.ToString() + "'");
                    if (drs.Length > 0)
                    {
                        drs[0]["ActiveFlag"] = (int)Common.CommonEnum.ActiveFlag.invalid;
                        drs[0]["ModifyBy"] = GetCurrentUser();
                        drs[0]["ModifyDate"] = DateTime.Now.ToString();
                        Attachment.AcceptChanges();

                        MessageBox.Show(this.Page, "删除成功!");
                    }
                }

                else
                {
                    MessageBox.Show(this.Page, "删除失败!");
                }

                LoadAttachment();
            }
        }