Ext.net How to check row GridPanel with CheckboxSelectionModel

Question

I have a GridView

  <ext:GridPanel ID="GridPanelRoles" runat="server" StoreID="StoreUserTypes" ForceFit="true"
                            Title="">
                              <View>
                                <ext:GridView ID="GridViewRoles" runat="server" LoadMask="false" />
                            </View>
                             <SelectionModel>
                                <ext:CheckboxSelectionModel  ID="CheckboxSelectionModelMemTypes" runat="server" />
                            </SelectionModel>
                              <ColumnModel>
                                <Columns>
                                    <ext:Column ID="col_type_desc" runat="server" DataIndex="description" Text="" />
                                </Columns>
                                </ColumnModel>
    </ext:GridPanel>

and a store

 <ext:Store ID="StoreUserTypes" runat="server">
    <Reader>
        <ext:JsonReader IDProperty="id" />
    </Reader>
    <Model>
        <ext:Model ID="ModelUserTypes" runat="server" IDProperty="id">
            <Fields>
                <ext:ModelField Name="id" />
                <ext:ModelField Name="description" />
            </Fields>
        </ext:Model>
    </Model>
</ext:Store>

I want to check some rows after i i fill the grid (through c#) depending on their id (id is not appear on grid). I have tried

  CheckboxSelectionModel sm = GridPanelRoles.GetSelectionModel() as   CheckboxSelectionModel;

            sm.Select(id);

But this does not working.

I will appreciate any help.

Answer 1

Try this

    sm.SelectedRows.Add(new SelectedRow(id));

Note: Make sure that the variable id is of type string

Answer 2

In version 3.3 you need to add

GridPanelRoles.Render();

or

sm.UpdateSelection();