hi,
i have found a workaround to set the selected filter with an extra column (avtive) in grid panel heres the code:
<ext:Column Header="Active" DataIndex="Active" Editable="false" Hidden="false" >
<Editor>
<ext:TextField ID="TextField411" EnableViewState="true" BlankText="false" runat="server" />
</Editor>
</ext:Column>
=================================================================================
<SelectionModel>
<ext:CheckboxSelectionModel ID="CheckboxSelectionModel1" ColumnPosition="0" HideCheckAll="false" EnableViewState="true" SingleSelect="false" runat="server" >
<DirectEvents>
<SelectionChange OnEvent="AddChecked" >
<ExtraParams>
<ext:Parameter Name="Values" Value="Ext.encode(#{GridPanel2}.getRowsValues({selectedOnly:true}))" Mode="Raw" />
<ext:Parameter Name="direct" Value="true" Mode="Value"></ext:Parameter>
</ExtraParams>
</SelectionChange>
</DirectEvents>
<Listeners>
<RowSelect Handler="record.set('Active', 'true');" />
<RowDeselect Handler="record.set('Active', 'false');" />
</Listeners>
</ext:CheckboxSelectionModel>
</SelectionModel>
===================================================================================
therefore a button function which sets the filter :
[DirectMethod]
protected void SetGridFilter(object sender, DirectEventArgs e)
{
Store2.Filter("Projektnummer",this.ComboBox1.SelectedItem.Value.ToString(),true,false);
this.Label1.Text = this.ComboBox1.SelectedItem.Value.ToString();
}