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filter expressions as a string?

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This is a migrated thread and some comments may be shown as answers.
mac
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mac asked on 02 Feb 2009, 05:54 PM
heya.. I know I saw this in use in one of the demos but can't find it any longer. I have a grid with the following
<telerik:radgrid id="Radgrid1" FilterExpression= "[column] = 'TextValue' ....>
I also have a checkbox control on the page to quicly just filter out the items that have a count greater than zero.

Is there a reason I can't build a filter expression using regualar t-sql?


code snippet.

Protected Sub appfilter_CheckedChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles appfilter.CheckedChanged  
 
        RadGrid1.MasterTableView.FilterExpression = Nothing 
        If appfilter.Checked = True Then  
                    RadGrid1.MasterTableView.FilterExpression = "(([Icount] > '0' and [ActivityStatus] = 'Vacant') or [Ecount] > '0')" ' consider the first two items or consider the third.  
            RadGrid1.MasterTableView.Rebind()  
 
        Else  
            RadGrid1.MasterTableView.FilterExpression = "([ActivityStatus] = 'Vacant')" 
            RadGrid1.MasterTableView.Rebind()  
        End If  
 
    End Sub 

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Shinu
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answered on 03 Feb 2009, 06:49 AM
Hi Mac,

I hope you are trying to set the FilterExpression for the Grid in the aspx. If so try setting it as shown below.

ASPX:
<telerik:RadGrid ID="RadGrid1" runat="server" Skin="WebBlue"     AllowSorting="true"   PagerStyle-HorizontalAlign="right" AllowMultiRowSelection="true" DataSourceID="SqlDataSource1"   > 
                <MasterTableView FilterExpression="[ActivityStatus] = 'Vacant'"  TableLayout="Fixed"     DataSourceID="SqlDataSource1"


Thanks
Shinu
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mac
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answered on 04 Feb 2009, 04:43 PM
your example works as expected however my question was in dealing with multiple columns, not just one.
ie. (([column1] = 'Alpha' and [thecount] > 0) OR [columnb] = 'some other value'). when written as is, the filter is completely ignored.
Question: How to formulate multi column filter expression?
Question: Is the column related to the Datasource Column Name or the Grid Unique Name or the Grid DataField Name?

Thank you for your assistance in this.
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Yavor
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answered on 05 Feb 2009, 08:53 AM
Hello mac,

Attached to this message, is a small application, which handles a similar task.
I hope it helps.

Kind regards,
Yavor
the Telerik team

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