private void btnSave_Click(object sender, RoutedEventArgs e)     {       if (IsInsert)       {         //如果日歷控件沒有選日期，那幫它賦一個當前日期。下面有三個日歷控件中，我只為其中一個日歷控件做了賦值。          DateTime time1 = dpEditTime.SelectedDate == null ? DateTime.Now : dpEditTime.SelectedDate.Value;                   DataUpdate updata = new DataUpdate();         string sql = "insert into T_SITE (SITE_ID,SITE_NAME,SITE_TITLE,SITE_DIR,SITE_ORDER,SITE_KEYS,SITE_NOTE,SITE_LOGO,SITE_PUBLISH,SITE_PUBLISH_TIME,SITE_LOG_CLEAR,SITE_UPLOAD_SIZE,SITE_ADD_TIME,SITE_UPDATE_TIME,SITE_UPLOAD_FILE_TYPE) values('" + txtSiteID.Text + "','" + txtSiteName.Text + "','" + txtSiteTitle.Text + "','" + txtSitePath.Text + "','" + txtSiteNumber.Text + "','" + txtKeyword.Text + "','" + txtWebDescription.Text + "','" + txtSiteLogo.Text + "','" + txtYesNORelease.Text + "',to_date('" +txtReleaseTime.SelectedDate.Value.ToString("yyyy-MM-dd hh:mm:ss") + "','YYYY-MM-DD hh24:mi:ss'),'" + txtDiaryEDay.Text + "','" + txtUpFileSize.Text + "',to_date('" +dpAddTime.SelectedDate.Value.ToString("yyyy-MM-dd hh:mm:ss") + "','YYYY-MM-DD hh24:mi:ss'),to_date('" + time1.ToString("yyy-MM-dd hh:mm:ss") + "','YYYY-MM-DD hh24:mi:ss'),'" + txtUpFileTypeLimit.Text + "')";           //insert語句太長，有StringBuilder優化一下          StringBuilder sql1 = new StringBuilder();          sql1.Append(@"insert into T_SITE (SITE_ID,SITE_NAME,SITE_TITLE,SITE_DIR,SITE_ORDER,SITE_KEYS,SITE_NOTE,SITE_LOGO,SITE_PUBLISH,SITE_PUBLISH_TIME,SITE_LOG_CLEAR,SITE_UPLOAD_SIZE,SITE_ADD_TIME,SITE_UPDATE_TIME,SITE_UPLOAD_FILE_TYPE) values('");         sql1.Append(txtSiteID.Text); sql1.Append("','");         sql1.Append(txtSiteName.Text); sql1.Append("','");         sql1.Append(txtSiteTitle.Text); sql1.Append("','");         sql1.Append(txtSitePath.Text); sql1.Append("','");         sql1.Append(txtSiteNumber.Text); sql1.Append("','");         sql1.Append(txtKeyword.Text); sql1.Append("','");         sql1.Append(txtWebDescription.Text); sql1.Append("','");         sql1.Append(txtSiteLogo.Text); sql1.Append("','");         sql1.Append(txtYesNORelease.Text);          sql1.Append("',to_date('");         sql1.Append(txtReleaseTime.SelectedDate.Value.ToString("yyyy-MM-dd hh:mm:ss"));         sql1.Append("','YYYY-MM-DD hh24:mi:ss'),'");         sql1.Append(txtDiaryEDay.Text); sql1.Append("','");         sql1.Append(txtUpFileSize.Text);         sql1.Append("',to_date('");         sql1.Append(dpAddTime.SelectedDate.Value.ToString("yyyy-MM-dd hh:mm:ss"));         sql1.Append("','YYYY-MM-DD hh24:mi:ss'),to_date('");         sql1.Append(time1.ToString("yyy-MM-dd hh:mm:ss"));         sql1.Append("','YYYY-MM-DD hh24:mi:ss'),'");         sql1.Append(txtUpFileTypeLimit.Text);         sql1.Append("')");          MessageBox.Show(sql1.ToString());                  updata.DataObjects.Add(sql1.ToString());                  updata.DataObjects.Add(sql);         updata = m_IDataProvider.Execute(updata);         if (updata.ExecuteState)         {           MessageBox.Show("插入成功");         }       }       else       {                 }            }   } }