利用DataSet、DataTable、DataView按照自定义条件过滤数据 DataView的RowFilter与RowStateFilter分别可以按照自定义条件、DataViewRowState的记录行状态来过滤数据(有时测试不太好使,可能因人而异哈哈。。)。例: DataView事例myView.RowFilter = "name<> 'World' and name <> 'Hello' and corpid>400"; for(int t=0;t<myView.Count;t++) { TextBox2.Text += myView[t]["name"].ToString()+"\r\n"; }myView.RowStateFilter=DataViewRowState.Added | DataViewRowState.ModifiedCurrent;for(int i = 0;i < myView.Count ;i++) { TextBox2.Text += myView[i]["name"].ToString()+"\r\n"; } 利用DataSet过滤数据: DataSet过滤数据 DataRow[] drUserUrl = dsUserUrl.Tables[0].Select("UserName='北飘'"); DataSet dsUserUrl = new DataSet(); if(drUserUrl.Length>0) { dsUserUrl.Merge(drUserUrl); }//利用RowState来过滤DataSet dsTmpUserUrl = dsUserUrl.GetChanges(DataRowState.Unchanged);