insert语句太长用StringBuilder优化一下

 private void btnSave_Click(object sender, RoutedEventArgs e)
    {
      if (IsInsert)
      {
        //如果日历控件没有选日期，那帮它赋一个当前日期。下面有三个日历控件中，我只为其中一个日历控件做了赋值。
        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语句太长，有StringBuilder优化一下
        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
      {  

      } 

    }
  }
}