c# - 数据表中的验证

Question

我在这里将大量数据放入超过 5000 条的表中

  using (OleDbConnection excel_con = new OleDbConnection(conString))
        {
            excel_con.Open();
            string sheet1 = excel_con.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null).Rows[0]["TABLE_NAME"].ToString();
            DataTable dtExcelData = new DataTable();





            dtExcelData.Columns.AddRange(new DataColumn[10] {

//this are my columns of records

            new DataColumn("Employee Code",typeof(string)),
            new DataColumn("Employee Type", typeof(int)),
            new DataColumn("First Name", typeof(string)),
            new DataColumn("Last Name", typeof(string)),
            new DataColumn("Gender",typeof(string)),
            new DataColumn("Email ID", typeof(string)),
            new DataColumn("Mobile No#", typeof(string)),
            new DataColumn("Current Address", typeof(string)),
            new DataColumn("Permanent Address", typeof(string)),
            new DataColumn("Status",typeof(string))
        }
            );


            using (OleDbDataAdapter oda = new OleDbDataAdapter("SELECT * FROM [" + sheet1 + "]", excel_con))
            {
                oda.Fill(dtExcelData);


            }
            excel_con.Close();

现在插入数据表之前或之后我想检查手机号码、电子邮件 ID、性别、空值等的验证

Answer 1

我认为你应该使用这段代码

 using (OleDbDataAdapter oda = new OleDbDataAdapter("SELECT * FROM [" + sheet1 + "]", excel_con))
            {
                oda.Fill(dtExcelData);
              if(dtExcelData.rows.count<0)
               {
               for(int i=0;i<dtExcelData.rows.count;i++)
                {
                  string mobno=dtExcelData.rows[i]["Mobile No#"].tostring();
                    if(mobno=="")
                     {
                       //code here 
                         }
                  }
                }

            }