This post exactly explains my situation but instead of removing the Boolean value yes, I need to disable a radcombo item (please check under Rad comboBox filter2 item Show All Temporary reports).
http://www.telerik.com/forums/combobox-with-textbox-filtering
Rad comboBox filter1:
<telerik:GridBoundColumn UniqueName="STATE_CODE" DataField="STATE_CODE" HeaderText="STATE_CODE" >
<FilterTemplate>
<telerik:RadComboBox ID="RadComboBoxSTATE_CODE" DataSourceID="SqlDataSource1" DataTextField="STATE_CODE"
DataValueField="STATE_CODE" Height="200px" AppendDataBoundItems="true" SelectedValue='<%# TryCast(Container,GridItem).OwnerTableView.GetColumn("STATE_CODE").CurrentFilterValue %>'
runat="server" OnClientSelectedIndexChanged="STATE_CODEIndexChanged">
<Items>
<telerik:RadComboBoxItem Text="All" />
</Items>
</telerik:RadComboBox>
<telerik:RadScriptBlock ID="RadScriptBlock1" runat="server">
<script type="text/javascript">
function STATE_CODEIndexChanged(sender, args) {
var tableView = $find("<%# TryCast(Container,GridItem).OwnerTableView.ClientID %>");
tableView.filter("STATE_CODE", args.get_item().get_value(), "EqualTo");
}
</script>
</telerik:RadScriptBlock>
</FilterTemplate>
</telerik:GridBoundColumn>
Rad comboBox filter2:
<telerik:GridBoundColumn UniqueName="report" DataField="report" HeaderText="report" >
<FilterTemplate>
<telerik:RadComboBox ID="RadComboBoxreport" DataSourceID="SqlDataSource2" DataTextField="report"
DataValueField="report" Height="200px" AppendDataBoundItems="true" SelectedValue='<%# TryCast(Container,GridItem).OwnerTableView.GetColumn("report").CurrentFilterValue %>'
runat="server" OnClientSelectedIndexChanged="reportIndexChanged">
<Items>
<telerik:RadComboBoxItem Value="All" Text="All" />
<telerik:RadComboBoxItem Value="T" Text="Show All Temporary reports" Enabled="true" />
</Items>
</telerik:RadComboBox>
<telerik:RadScriptBlock ID="RadScriptBlock2" runat="server">
<script type="text/javascript">
function reportIndexChanged(sender, args) {
var tableView = $find("<%# TryCast(Container,GridItem).OwnerTableView.ClientID %>");
tableView.filter("report", args.get_item().get_value(), "Contains");
}
</script>
</telerik:RadScriptBlock>
</FilterTemplate>
</telerik:GridBoundColumn>
Temp Report numbers start with T. Regulars do not have T.
On selecting a state, say CA, if they have temp reports, it is working fine. If CA doesn't have temporary reports, but the user chooses "Show all temp records", I get ArgumentOutofRangeException and - Selection out of range Parameter name: value error.
I am not sure where to disable the item. It will be great if I get some help on this.