Question

我在这里有一些错误，我没有问题如何解决它。它无法调用表的列表

我尝试调用debug，当它到达下面的语句时

List<Int32> ListintNo = DT_ExcludeNo.AsEnumerable().Select(x
  =>Convert.ToInt32(x[0].ToString())).ToList();

请帮忙。

 DataTable DT_ExcludeNo = new DataTable();
         dataAdapter.Fill(DT_ExcludeNo);

         InsertLogFile("AMB SP15: Validate Insert Data");

         //InsertLogFile("AMB SP15: Execute Query: " + sSqlCommandRetrieveExcludeNO);

         List<Int32> ListintNo = DT_ExcludeNo.AsEnumerable().Select(x => Convert.ToInt32(x[0].ToString())).ToList();
        for (Int32 i = 1; i <= TotalCount; i++)
        {
            foreach (Int32 intNo in ListintNo)
            {
                if (i == intNo)
                {
                string sSqlCommandRetrieveData = "SELECT Name, [I.C], [D.O.B], NO, [EFF DATE], Sum_Insured from AMB_Temp WHERE NO = " + i;

                SqlCommand obj_SQLCommand = new SqlCommand(sSqlCommandRetrieveData, myconn);
                dataAdapter = new SqlDataAdapter(obj_SQLCommand);

                DataSet DS_RetrieveData = new DataSet();
                dataAdapter.Fill(DS_RetrieveData);

                //InsertLogFile("AMB SP15: Execute Query: " + sSqlCommandRetrieveData);

                DataValidation(DS_RetrieveData);
                }

Answer 1

以下是更新后的代码：

//start new code
string fieldString = x[0].ToString();
if (string.IsNullOrEmpty(fieldString))
{
   fieldString = "0";
}
//InsertLogFile("AMB SP15: Execute Query: " + sSqlCommandRetrieveExcludeNO);

List<Int32>    ListintNo = DT_ExcludeNo.AsEnumerable().Select(x =>   Convert.ToInt32(fieldString )).ToList();
//end new code
     DataTable DT_ExcludeNo = new DataTable();
     dataAdapter.Fill(DT_ExcludeNo);

     InsertLogFile("AMB SP15: Validate Insert Data");

     //InsertLogFile("AMB SP15: Execute Query: " + sSqlCommandRetrieveExcludeNO);
        string fieldString = x[0].ToString();
        if (string.IsNullOrEmpty(fieldString))
        { fieldString = "0"; }

     List<Int32> ListintNo = DT_ExcludeNo.AsEnumerable().Select(x => Convert.ToInt32(fieldString)).ToList();



        for (Int32 i = 1; i <= TotalCount; i++)
    {
        foreach (Int32 intNo in ListintNo)
        {
            if (i == intNo)
            {
            string sSqlCommandRetrieveData = "SELECT Name, [I.C], [D.O.B], NO, [EFF DATE], Sum_Insured from AMB_Temp WHERE NO = " + i;

            SqlCommand obj_SQLCommand = new SqlCommand(sSqlCommandRetrieveData, myconn);
            dataAdapter = new SqlDataAdapter(obj_SQLCommand);

            DataSet DS_RetrieveData = new DataSet();
            dataAdapter.Fill(DS_RetrieveData);

            //InsertLogFile("AMB SP15: Execute Query: " + sSqlCommandRetrieveData);

            DataValidation(DS_RetrieveData);
            }

Answer 2

请检查NO的数据库列字段数据类型，如果VarChar or Char您必须更改where语句。

string sSqlCommandRetrieveData = "SELECT Name, [I.C], [D.O.B], NO, [EFF DATE], Sum_Insured from   AMB_Temp WHERE NO = " + Convert. ToString(i);

eRROR With：输入字符串的格式不正确

2 个答案: