点击DataGridView列标题排序后，绑定的DataTable也相应的排序， DataGridView和DataTable数据具有一致性 (新增加了sorted事件的排序方式)

Code
private void dataGridView1_Sorted(object sender, EventArgs e)
{
string _sortStr = this.dataGridView1.SortedColumn.Name; //排序列
//排序方向
SortOrder _so = this.dataGridView1.SortOrder;
if (_so == SortOrder.Ascending)
{
_sortStr += " asc";
}
else
{
_sortStr += " desc";

}

DataView _dv = this.dtTemp.DefaultView;
_dv.Sort = _sortStr; //排序
this.dtTemp = _dv.ToTable(); //将排序后的datatable赋给 this.dtTemp
}