DataTable行转列

 /// <summary>  /// DataTable行转列  /// </summary>  /// <param name="dtable">需要转换的表</param>  /// <param name="head">转换表表头对应旧表字段（小写）</param>  /// <returns></returns>  public static DataTable DataTableRowtoCon(DataTable dtable, string head)  {   DataTable dt = new DataTable();   dt.Columns.Add("NumberID");   for (int i = 0; i < dtable.Rows.Count; i++)   {//设置表头    dt.Columns.Add(dtable.Rows[i][head].ToString());   }   for (int k = 0; k < dtable.Columns.Count; k++)   {    string temcol = dtable.Columns[k].ToString();    if (dtable.Columns[k].ToString().ToLower() != head)//过滤掉设置表头的列    {     DataRow new_dr = dt.NewRow();     new_dr[0] = dtable.Columns[k].ToString();     for (int j = 0; j < dtable.Rows.Count; j++)     {      string temp = dtable.Rows[j][k].ToString();      new_dr[j + 1] = (Object)temp;     }     dt.Rows.Add(new_dr);    }   }   return dt;  }