C# 遍历datatable字段名和value的案例

DataTable dt = dataSet.Tables[0];  
foreach (DataColumn col in dt .Columns)
{
 string name=col.ColumnName;//获取到DataColumn列对象的列名
  dt.columns[行数][col.ColumnName].tostring()
} 
 
foreach (System.Data.DataColumn k in dataTable.Columns) 
      {
        columnName=k.ColumnName;
        columnType=k.DataType.ToString();
      }

   /// <summary>
    /// 从DataTable中返回两列数据作为一个新的DataTable
    /// </summary>
    /// <param name="sourceDt">源数据表</param>
    /// <param name="x">需要返回的第1个字段</param>
    /// <param name="y">需要返回的第1个字段</param>
    /// <returns></returns> 
    public static DataTable GetNewDataTable(DataTable sourceDt,string x,string y)
    {
      DataTable newTable = sourceDt.DefaultView.ToTable(false, new string[] { x, y });
      return newTable;
    }