datagridview select query from string to date

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Hi

I am using access database , vb.net
to filter my datagridview I used

Sales_ItemsDataGridView.DataSource = Me.M_B_DATABASEDataSet.Sales_Items.Select(("Convert(category, 'System.String') LIKE '" & search2 & "'")

now my problem
my date is string in the Database
date format is 31/12/2001
and i want to filter the dategridview between 2 dates so i uesed

Sales_ListDataGridView.DataSource = Me.M_B_DATABASEDataSet.Sales_List.Select(("Convert(invoice_date, 'System.String')  <= '" & DateTimePicker2.Value & "' AND Convert(invoice_date, 'System.String')   >= '" & DateTimePicker1.Value & "'"))

but sure that gave me funny results as it considered the date as string...
but i failed to change the

("Convert(invoice_date, 'System.String')

to date format
can any one help Please.....

Posted 14-Jun-14 18:24pm

Member 10862570

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DamithSL · Answer 1 · 2014-06-14T18:40:00

Try with LINQ

C#

Sales_ListDataGridView.DataSource = Me.M_B_DATABASEDataSet.Sales_List.AsEnumerable()
                            .Where(r => r.Field<datetime>("invoice_date") <= DateTimePicker2.Value && r.Field<datetime>("invoice_date") >=DateTimePicker1.Value)
                            .CopyToDataTable();

http://msdn.microsoft.com/en-us/library/bb669073(v=vs.110).aspx[^]