如何在c＃中使用between之间过滤数据表

Question

I am using data table with c# and i want to filter data table with between.but when i run my code following exception is thrown "The expression contains unsupported operator 'Between'"

here is the code:

string str = "ITEM_ID BETWEEN  " + textEdit1.Text + " AND  " +    textCUS_COA_CODE.Text + " ";

DataTable dt = new DataTable();
dt = this.pAK_ASIADataSet.sp_STOCKS_report;

dt.DefaultView.RowFilter =str;

Answer 1

我没有尝试过，但使用"ITEM_ID >= bla AND ITEM_ID <= bla2"应该可以正常工作。

Answer 2

Looking on the MSDN forums, it seems that BETWEEN is not a supported operator for row-filters:

http://social.msdn.microsoft.com/Forums/en-US/adodotnetdataproviders/thread/1220e0f5-4bab-4b53-b8b6-a7a9e8420558/

Can you substitute for an AND:

ITEM_ID >= val_oneAND ITEM_ID <= val_two

Answer 3

You also can use LINQ to DataTable :

var result = dt.AsEnumerable()
  .Where(row => {
                    var itemId = row.Field<int>("ITEM_ID");
                    var value1 = int.Parse(textEdit1.Text);
                    var value2 = int.Parse(textCUS_COA_CODE.Text);

                    return itemId >= value1 && itemId <= value2;
                });

Answer 4

尝试这个：

var rows = dt.Select(String.Format("ITEM_ID >= {0} AND ITEM_ID <= {1}", textEdit1.Text, textCUS_COA_CODE.Text))

Answer 5

You can't use between keyword with datatable RowFilter expression, you can use the <= and >= operator in place of between keyword like below:

string str = "ITEM_ID <=" + textEdit1.Text + " AND  ITEM_ID>=" +    textCUS_COA_CODE.Text + " ";

DataTable dt = new DataTable();
dt = this.pAK_ASIADataSet.sp_STOCKS_report;

dt.DefaultView.RowFilter =str;

Answer 6

Simply use another filter expression as a walk around:

String str = String.Format("ITEM_ID >= {0} AND ITEM_ID <= {0}", textEdit1.Text);

DataTable dt = new DataTable();
dt = this.pAK_ASIADataSet.sp_STOCKS_report;

dt.DefaultView.RowFilter =str;