/// <summary>
/// 去除列的重复信息
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="dt"></param>
/// <param name="indexes">要去重的索引（可以是整数、列名）</param>
/// <returns></returns>
public static void ClearRepeateInfo <T>(this MDataTable dt, params T[] indexes)
{
dt.ClearRepeateInfo(null, indexes);
}