我通过DataGrid绑定一个Dataset（经过webservice返回），但是Dataset删除其中一行时,发现Dataset的记录集少了一行，可是HasChanges却是false。请高手帮忙！
代码如下：

private void cmdDelete_Click(object sender, System.EventArgs e)
{
CheckBox cb;
Equipment.EqpService.EquipmentDS.EquipmentRow removeRow;
   
Equipment.EqpService.EqpService ws=new EqpService.EqpService();   
ws.Credentials=System.Net.CredentialCache.DefaultCredentials; 
equipmentDS1.Merge(ws.GetEquipmentDS( ctlDept.strTempSql)); 

for(int i=0;i<DG.Items.Count;i++)
{
cb=(CheckBox)DG.Items[i].FindControl("chb2"); 

if (cb!=null)
{
if (cb.Checked==true )
{
removeRow=equipmentDS1.Equipment.FindByEquipmentID(System.Decimal.Parse (   DG.DataKeys[i].ToString() ));
//这里的removeRow有返回值 equipmentDS1.Equipment.RemoveEquipmentRow (removeRow);  
//equipmentDS1.Equipment.RemoveEquipmentRow (equipmentDS1.Equipment[DG.Items[i].DataSetIndex]); 


}
}
}

if(equipmentDS1.HasChanges(DataRowState.Deleted ))

{
Equipment.EqpService.EqpService wts=new EqpService.EqpService();   
wts.Credentials=System.Net.CredentialCache.DefaultCredentials; 
Equipment.EqpService.EquipmentDS xdataset;
xdataset = (Equipment.EqpService.EquipmentDS)equipmentDS1.GetChanges();
wts.UpEquipmentDS(xdataset); 

equipmentDS1.AcceptChanges(); 
 
//msgbox
BindData();
}
}