Question

以下是我用于批量更新（约14k条记录）我们的ZipCodeTerritory表的代码。代码运行正常，没有任何例外，但是当我在connection关闭后检查表时，我发现没有任何更改。

我持有需要在方法之间传递的List对象中更新的所有记录。我使用此List填充DataTable并将其放入DataSet以执行更新。

这是我尝试使用此技术的第一次尝试，所以任何建议都非常感谢。

private static string selectCommand =
   "SELECT ChannelCode, DrmTerrDesc, IndDistrnId, StateCode, ZipCode, EndDate, 
     EffectiveDate, LastUpdateId, LastUpdateDate, Id, ErrorCodes, Status FROM
     ZipCodeTerritory";

private static string updateCommand = "UPDATE ZipCodeTerritory SET ChannelCode =
                                      @ChannelCode, DrmTerrDesc = @DrmTerrDesc,
                                      IndDistrnId = @IndDistrnId," + 
                                      "StateCode = @StateCode, ZipCode = @ZipCode,
                                      EndDate = @EndDate, EffectiveDate = 
                                      @EffectiveDate," + 
                                      "LastUpdateId = @LastUpdateId, LastUpdateDate
                                      = @LastUpdateDate, ErrorCodes = @ErrorCodes,"
                                      + "Status = @Status " + 
                                      "WHERE Id = @Id";

public static void Update(List<ZipCodeTerritory> updates, Dictionary<ZipCodeTerritory, string> errorList)
{
   using (SqlConnection connection = new SqlConnection(connString))
   {
      using (SqlDataAdapter adapter = new SqlDataAdapter(selectCommand, connection))
      {
         try
         {
            SqlCommand updateCmd = connection.CreateCommand();
            updateCmd.CommandText = updateCommand;
            updateCmd.Parameters.Add(new SqlParameter("@ChannelCode", SqlDbType.Char, 1, "ChannelCode"));
            updateCmd.Parameters.Add(new SqlParameter("@DrmTerrDesc", SqlDbType.Char, 1, "DrmTerrDesc"));
            updateCmd.Parameters.Add(new SqlParameter("@IndDistrnId", SqlDbType.Char, 1, "IndistrnId"));
            updateCmd.Parameters.Add(new SqlParameter("@StateCode", SqlDbType.Char, 1, "StateCode"));
            updateCmd.Parameters.Add(new SqlParameter("@ZipCode", SqlDbType.Char, 1, "ZipCode"));
            updateCmd.Parameters.Add(new SqlParameter("@EndDate", SqlDbType.Char, 1, "EndDate"));
            updateCmd.Parameters.Add(new SqlParameter("@EffectiveDate", SqlDbType.Char, 1, "EffectiveDate"));
            updateCmd.Parameters.Add(new SqlParameter("@LastUpdateId", SqlDbType.Char, 1, "LastUpdateId"));
            updateCmd.Parameters.Add(new SqlParameter("@LastUpdateDate", SqlDbType.Char, 1, "LastUpdateDate"));
            updateCmd.Parameters.Add(new SqlParameter("@Id", SqlDbType.Char, 1, "Id"));
            updateCmd.Parameters.Add(new SqlParameter("@ErrorCodes", SqlDbType.Char, 1, "ErrorCodes"));
            updateCmd.Parameters.Add(new SqlParameter("@Status", SqlDbType.Char, 1, "Status"));
            updateCmd.UpdatedRowSource = UpdateRowSource.None;
            adapter.UpdateCommand = updateCmd;
            adapter.AcceptChangesDuringUpdate = true;
            DataSet ds = LoadDataSet(updates);
            connection.Open();
            adapter.Fill(ds, "ZipCodeTerritory");
            adapter.Update(ds, "ZipCodeTerritory");
            connection.Close();
         }
         catch (Exception ex)
         {
            string msg = ex.Message;
         }                    
      }
   }
}

private static DataSet LoadDataSet(List<ZipCodeTerritory> zipcodeList)
{
   DataSet ds = new DataSet();
   DataTable data = LoadData(zipcodeList);
   ds.Tables.Add(data);
   return ds;
}

private static DataTable LoadData(List<ZipCodeTerritory>zipCodeList)
{
   DataTable dataTable = InitializeStructure();

   foreach (var zipcode in zipCodeList)
   {
      DataRow row = dataTable.NewRow();

      try
      {
         row[0] = zipcode.ChannelCode.Trim();
         row[1] = zipcode.DrmTerrDesc.Trim();
         row[2] = zipcode.IndDistrnId.Trim();
         row[3] = zipcode.StateCode.Trim();
         row[4] = zipcode.ZipCode.Trim();
         row[5] = zipcode.EndDate.Date;
         row[6] = zipcode.EffectiveDate.Date;
         row[7] = zipcode.LastUpdateId;
         row[8] = DateTime.Now.Date;
         //row[9] = zipcode.Id;
         row[10] = zipcode.ErrorCodes;
         row[11] = zipcode.Status;
      }
      catch (Exception ex)
      {

      }
      dataTable.Rows.Add(row);
   }
   return dataTable;
}

private static DataTable InitializeStructure()
{
   DataTable dt = new DataTable();

   dt.Columns.Add("ChannelCode", typeof (string));
   dt.Columns.Add("DrmTerrDesc", typeof (string));
   dt.Columns.Add("IndDistrnId", typeof (string));
   dt.Columns.Add("StateCode", typeof (string));
   dt.Columns.Add("ZipCode", typeof (string));
   dt.Columns.Add("EndDate", typeof (DateTime));
   dt.Columns.Add("EffectiveDate", typeof (DateTime));
   dt.Columns.Add("LastUpdateId", typeof (string));
   dt.Columns.Add("LastUpdateDate", typeof (DateTime));
   dt.Columns.Add("Id", typeof (int));
   dt.Columns.Add("ErrorCodes", typeof (string));
   dt.Columns.Add("Status", typeof (string));
   return dt;
}

修改

我已更改.Fill和LoadDataSet()方法的顺序，首先从数据库中加载当前所在的数据，然后将更改合并到DataSet中。但是，我现在收到以下错误：

`Update unable to find TableMapping['ZipCodeTerritory'] or DataTable 'ZipCodeTerritory'`

我意识到我没有为表格命名，因此我将InitializeStructure()方法更改为以下

    private static DataTable InitializeStructure()
    {
        DataTable dt = new DataTable("ZipCodeTerritory");

然而....现在当我在这一行尝试.Update时

 adapter.Update(ds, "ZipCodeTerritory");

我得到了这个例外：

Update requires a valid InsertCommand when passed DataRow collection with new rows.

第二次编辑

我已将以下InsertCommand添加到Update方法（这是包含try的{{1}}内的前几行代码：

updateCommand

但是我仍然没有看到数据库发生任何变化。

使用SqlAdapter和DataSet对SQL表执行批量更新

0 个答案: