我如何从Excel中的DataTable中删除空行？

Question

我有同样的问题。但不同的是，我的空行在中间，我有超过50列。用户希望看到重复的行，这意味着我无法使用SELECT DISTINCT * FROM [excel]

空行可能在任何地方。迄今为止我所面对的最大的Excel有超过10万行。

是否有更有效的方法来删除空行或必须循环并检查每一行中的所有列？

void SelectDataFromExcel() 
     { 

      string connectionString = ConfigurationSettings.AppSettings["ExcelConn"].ToString(); 
      OleDbConnection excelConnection = new OleDbConnection(connectionString); 
      excelConnection.Open(); 
      OleDbCommand dbCommand; 
      OleDbDataAdapter dataAdapter; 
      foreach (var sheet in Sheets) 
      { 
       dbCommand = new OleDbCommand("select DISTINCT* From[" + sheet + "$]", excelConnection); 
       System.Threading.Thread.Sleep(1000); 
       this.Invoke((MethodInvoker)delegate 
       { 
        listBox1.Items.Add("Tablo ismi: " + sheet.ToUpper(CultureInfo.InvariantCulture) + " Tablo Satır Sayısı: "+ dSet.Tables[sheet].Rows[0][0].ToString()); 
       }); 
       dataAdapter = new OleDbDataAdapter(dbCommand); 
       dTable = new DataTable(); 
       dataAdapter.Fill(dTable); 
       dTable.TableName = sheet.ToUpper(CultureInfo.InvariantCulture);; 

       ArrangedDataList(dTable); 
       FillSqlTable(dTable, dTable.TableName); 
       dTable.Dispose(); 
       dataAdapter.Dispose(); 
       dbCommand.Dispose(); 
      } 

      excelConnection.Close(); 
      excelConnection.Dispose(); 
      t1.Abort(); 
     }

Answer 1

编辑

这将删除其每一个它的列包含存在或是空白的所有行：

dataTable = dataTable.Rows.Cast<DataRow>(). 
    Where(row => !row.ItemArray.All(field => field is System.DBNull || 
      string.Compare((field as string).Trim(), string.Empty) == 
                 0)).CopyToDataTable(); 

前才达到

的一种方式检查是否有空值

DataView dv = null; 
dv = new DataView(); 

{ 
    dv.Table = myDatatable; 
    dv.AllowDelete = true; 
    dv.AllowEdit = true; 
    dv.AllowNew = true; 
    dv.RowFilter = "myField = ' '"; 
}