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Cascading RadComboBoxes inside RadGrid

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Grid

This is a migrated thread and some comments may be shown as answers.

Dwight asked on 23 May 2012, 10:28 AM

Hi

I have tried for hours and read a thousand posts on this but cant master it

I have cascading RadComboBox controls inside a RadGrid and found the code below in a forum that works perfectly

The problem is that when I place the RadGrid inside a FormView control it no longer works, I get an error that says Cannot find a cell bound to column name 'HSG'

If anyone could tell me how to reference the controls inside of a formview I would be eternally grateful :)

Protected Sub RadComboBox1_SelectedIndexChanged(sender As Object, e As Telerik.Web.UI.RadComboBoxSelectedIndexChangedEventArgs)

Dim rdcbx As RadComboBox = CType(sender, RadComboBox)
Dim editedItem As GridEditableItem = CType(rdcbx.NamingContainer, GridEditableItem)

Dim RadComboBox1 As RadComboBox = CType(CType(editedItem, GridEditableItem) ("HSG").FindControl("RadComboBox1"), RadComboBox)
Dim RadComboBox2 As RadComboBox = CType(editedItem("HSG").FindControl("RadComboBox2"), RadComboBox)

RadComboBox2.Items.Clear()
RadComboBox2.Items.Insert(0, New RadComboBoxItem("", String.Empty))
Me.ObjectDataSource1.SelectParameters("KeyID").DefaultValue = RadComboBox1.SelectedValue.ToString
RadComboBox2.DataBind()

End Sub

6 Answers, 1 is accepted

answered on 23 May 2012, 10:37 AM

Hello,

Protected Sub RadComboBox1_SelectedIndexChanged(sender As Object, e As Telerik.Web.UI.RadComboBoxSelectedIndexChangedEventArgs)

Dim rdcbx As RadComboBox = DirectCast(sender, RadComboBox)

Dim editedItem As GridEditableItem = DirectCast(rdcbx.NamingContainer, GridEditableItem)

Dim RadComboBox1 As RadComboBox = DirectCast(DirectCast(editedItem.FindControl("RadComboBox1"), GridEditableItem), RadComboBox)

Dim RadComboBox2 As RadComboBox = DirectCast(editedItem.FindControl("RadComboBox2"), RadComboBox)

RadComboBox2.Items.Clear()

RadComboBox2.Items.Insert(0, New RadComboBoxItem("", String.Empty))

Me.ObjectDataSource1.SelectParameters("KeyID").DefaultValue = RadComboBox1.SelectedValue.ToString

RadComboBox2.DataBind()

End Sub

note : if you used form for editing then replace "GridEditableItem" with "GridEditFormItem".

Thanks,
Jayesh Goyani

answered on 23 May 2012, 11:25 AM

Hi Jayesh and thx so much but unfortunately I have the same error

When attempting to reference the RadGrid in edit mode it is inside the FormView which is also in edit mode

I tried this code and it still has the error Cannot find a cell bound to column name 'HSG'

Protected Sub RadComboBox1_SelectedIndexChanged(sender As Object, e As Telerik.Web.UI.RadComboBoxSelectedIndexChangedEventArgs)

Dim rdcbx As RadComboBox = DirectCast(sender, RadComboBox)

Dim GridEditFormItem As GridEditFormItem = DirectCast(rdcbx.NamingContainer, GridEditableItem)

Dim RadComboBox1 As RadComboBox = DirectCast(DirectCast(GridEditFormItem.FindControl("RadComboBox1"), GridEditableItem), RadComboBox)

Dim RadComboBox2 As RadComboBox = DirectCast(editedItem.FindControl("RadComboBox2"), RadComboBox)

RadComboBox2.Items.Clear()

RadComboBox2.Items.Insert(0, New RadComboBoxItem("", String.Empty))

Me.ObjectDataSource1.SelectParameters("KeyID").DefaultValue = RadComboBox1.SelectedValue.ToString

RadComboBox2.DataBind()

End Sub

I dont know how to reference the code while the RadGrid is nested inside a FormView, although that code works great if it is outside of the FormView

Any ideas?

answered on 23 May 2012, 01:10 PM

Hi, Im not quite sure what you mean by UI code but here is the markup for the RadGrid - pls if you meant something else then let me know

You will notice that the RadComboBoxes are named differently but I tried to simplify it when I asked the question :)

Thank you so so much for taking the time to help me, that is so nice

<telerik:RadGrid ID="DeptsRadGrid" runat="server"
AllowAutomaticDeletes="True" AllowAutomaticUpdates="True" AllowSorting="True"
AutoGenerateColumns="False" CellSpacing="0" DataSourceID="Depts"
GridLines="None" Width="500px" onprerender="DeptsRadGrid_PreRender">
<mastertableview allowsorting="False" commanditemdisplay="top" datakeynames="ID"
datasourceid="Depts">
<CommandItemSettings ExportToPdfText="Export to PDF" />
<rowindicatorcolumn filtercontrolalttext="Filter RowIndicator column">
<HeaderStyle Width="20px" />
</rowindicatorcolumn>
<expandcollapsecolumn filtercontrolalttext="Filter ExpandColumn column">
<HeaderStyle Width="20px" />
</expandcollapsecolumn>
<Columns>
<telerik:GridTemplateColumn DataField="Level1Account"
FilterControlAltText="Filter Level1Account column" HeaderText="HSG"
SortExpression="Level1Account" UniqueName="Level1Account">
<EditItemTemplate>


<telerik:RadComboBox ID="Level2RadComboBox" Runat="server"
AppendDataBoundItems="True" AutoPostBack="True" DataSourceID="Level1Account"
DataTextField="Account" DataValueField="ID"
onselectedindexchanged="Level2RadComboBox_SelectedIndexChanged"
Width="300px">
</telerik:RadComboBox>
<asp:ObjectDataSource ID="Level1Account" runat="server" DeleteMethod="Delete"
InsertMethod="Insert" OldValuesParameterFormatString="original_{0}"
SelectMethod="GetDataByAccountID"
TypeName="AccountsDataSetTableAdapters.AccountL2TableAdapter"
UpdateMethod="Update">
<DeleteParameters>
<asp:Parameter Name="Original_ID" Type="Int32" />
</DeleteParameters>
<UpdateParameters>
<asp:Parameter Name="AccountID" Type="String" />
<asp:Parameter Name="Account" Type="String" />
<asp:Parameter Name="PassWord" Type="String" />
<asp:Parameter Name="Mail" Type="String" />
<asp:Parameter Name="Original_ID" Type="Int32" />
</UpdateParameters>
<SelectParameters>
<asp:CookieParameter CookieName="Account" Name="AccountID" Type="String" />
</SelectParameters>
<InsertParameters>
<asp:Parameter Name="AccountID" Type="String" />
<asp:Parameter Name="Account" Type="String" />
<asp:Parameter Name="PassWord" Type="String" />
<asp:Parameter Name="Mail" Type="String" />
</InsertParameters>
</asp:ObjectDataSource>
<telerik:RadComboBox ID="Level3RadComboBox" Runat="server"
AppendDataBoundItems="True" datasourceid="Level2Account"
DataTextField="Account" DataValueField="Account"
onselectedindexchanged="Level3RadComboBox_SelectedIndexChanged" Width="300px">
</telerik:RadComboBox>
<asp:ObjectDataSource ID="Level2Account" runat="server" DeleteMethod="Delete"
OldValuesParameterFormatString="original_{0}"
SelectMethod="GetDataByAccountL2ID"
TypeName="AccountsDataSetTableAdapters.AccountL3TableAdapter">
<DeleteParameters>
<asp:Parameter Name="Original_ID" Type="Int32" />
</DeleteParameters>
<SelectParameters>
<asp:ControlParameter ControlID="Level2RadComboBox" Name="AccountL2ID"
PropertyName="SelectedValue" Type="Int32" />
</SelectParameters>
</asp:ObjectDataSource>
<asp:HiddenField ID="Level3HiddenField" runat="server"
Value='<%# Bind("Level2Account") %>' />
 
 

</EditItemTemplate>
<InsertItemTemplate>


<telerik:RadComboBox ID="Level2RadComboBox" Runat="server"
AppendDataBoundItems="True" DataSourceID="Level1Account"
DataTextField="Account" DataValueField="ID"
onselectedindexchanged="Level2RadComboBox_SelectedIndexChanged"
Width="300px" AutoPostBack="True">
</telerik:RadComboBox>
<asp:ObjectDataSource ID="Level1Account" runat="server" DeleteMethod="Delete"
InsertMethod="Insert" OldValuesParameterFormatString="original_{0}"
SelectMethod="GetDataByAccountID"
TypeName="AccountsDataSetTableAdapters.AccountL2TableAdapter"
UpdateMethod="Update">
<DeleteParameters>
<asp:Parameter Name="Original_ID" Type="Int32" />
</DeleteParameters>
<UpdateParameters>
<asp:Parameter Name="AccountID" Type="String" />
<asp:Parameter Name="Account" Type="String" />
<asp:Parameter Name="PassWord" Type="String" />
<asp:Parameter Name="Mail" Type="String" />
<asp:Parameter Name="Original_ID" Type="Int32" />
</UpdateParameters>
<SelectParameters>
<asp:CookieParameter CookieName="Account" Name="AccountID" Type="String" />
</SelectParameters>
<InsertParameters>
<asp:Parameter Name="AccountID" Type="String" />
<asp:Parameter Name="Account" Type="String" />
<asp:Parameter Name="PassWord" Type="String" />
<asp:Parameter Name="Mail" Type="String" />
</InsertParameters>
</asp:ObjectDataSource>
<telerik:RadComboBox ID="Level3RadComboBox" Runat="server"
AppendDataBoundItems="True" datasourceid="Level2Account"
DataTextField="Account" DataValueField="Account"
onselectedindexchanged="Level3RadComboBox_SelectedIndexChanged" Width="300px">
</telerik:RadComboBox>
<asp:ObjectDataSource ID="Level2Account" runat="server" DeleteMethod="Delete"
OldValuesParameterFormatString="original_{0}"
SelectMethod="GetDataByAccountL2ID"
TypeName="AccountsDataSetTableAdapters.AccountL3TableAdapter">
<DeleteParameters>
<asp:Parameter Name="Original_ID" Type="Int32" />
</DeleteParameters>
<SelectParameters>
<asp:ControlParameter ControlID="Level2RadComboBox" Name="AccountL2ID"
PropertyName="SelectedValue" Type="Int32" />
</SelectParameters>
</asp:ObjectDataSource>
<asp:HiddenField ID="Level3HiddenField" runat="server"
Value='<%# Bind("Level2Account") %>' />
 
 

</InsertItemTemplate>
<ItemTemplate>

</ItemTemplate>
</telerik:GridTemplateColumn>
<telerik:GridButtonColumn ButtonType="PushButton" CommandName="Edit"
FilterControlAltText="Filter column2 column" Text="Edit" UniqueName="column2">
<HeaderStyle Width="40px" />
</telerik:GridButtonColumn>
<telerik:GridButtonColumn ButtonType="PushButton" CommandName="Delete"
ConfirmText="Are you sure that you want to delete this record?"
FilterControlAltText="Filter column1 column" Text="Delete" UniqueName="column1">
<HeaderStyle Width="40px" />
</telerik:GridButtonColumn>
</Columns>
<editformsettings>
<editcolumn ButtonType="PushButton"
filtercontrolalttext="Filter EditCommandColumn column"
uniquename="EditCommandColumn1">
</editcolumn>
</editformsettings>
<EditFormSettings>
<EditColumn ButtonType="PushButton" UniqueName="EditCommandColumn">
</EditColumn>
</EditFormSettings>
</mastertableview>
<filtermenu enableimagesprites="False">
</filtermenu>
<headercontextmenu cssclass="GridContextMenu GridContextMenu_Default">
</headercontextmenu>
</telerik:RadGrid>

Accepted

answered on 23 May 2012, 03:19 PM

Hello,

Please check below code snippet its working correctly.

<telerik:RadGrid ID="RadGrid1" runat="server" AutoGenerateColumns="false" OnNeedDataSource="RadGrid1_NeedDataSource"

>

<MasterTableView>

<Columns>

<telerik:GridBoundColumn DataField="ID" HeaderText="ID" UniqueName="ID">

</telerik:GridBoundColumn>

<telerik:GridTemplateColumn DataField="Level1Account" FilterControlAltText="Filter Level1Account column"

HeaderText="HSG" SortExpression="Level1Account" UniqueName="Level1Account">

<EditItemTemplate>

<telerik:RadComboBox ID="Level2RadComboBox" runat="server" AutoPostBack="true" OnSelectedIndexChanged="Level2RadComboBox_SelectedIndexChanged"

Width="300px">

<Items>

<telerik:RadComboBoxItem Text="1" Value="1" />

<telerik:RadComboBoxItem Text="2" Value="2" />

<telerik:RadComboBoxItem Text="3" Value="3" />

</Items>

</telerik:RadComboBox>

<telerik:RadComboBox ID="Level3RadComboBox" runat="server" AutoPostBack="true" OnSelectedIndexChanged="Level3RadComboBox_SelectedIndexChanged"

Width="300px">

<Items>

<telerik:RadComboBoxItem Text="11" Value="11" />

<telerik:RadComboBoxItem Text="22" Value="22" />

<telerik:RadComboBoxItem Text="33" Value="33" />

</Items>

</telerik:RadComboBox>

</EditItemTemplate>

</telerik:GridTemplateColumn>

<telerik:GridEditCommandColumn>

</telerik:GridEditCommandColumn>

</Columns>

<EditFormSettings>

<EditColumn ButtonType="PushButton" FilterControlAltText="Filter EditCommandColumn column"

UniqueName="EditCommandColumn1">

</EditColumn>

</EditFormSettings>

<EditFormSettings>

<EditColumn ButtonType="PushButton" UniqueName="EditCommandColumn">

</EditColumn>

</EditFormSettings>

</MasterTableView>

</telerik:RadGrid>

Protected Sub Level3RadComboBox_SelectedIndexChanged(sender As Object, e As RadComboBoxSelectedIndexChangedEventArgs)

Dim Level3RadComboBox As RadComboBox = TryCast(sender, RadComboBox)

Dim item As GridEditFormItem = TryCast(Level3RadComboBox.NamingContainer, GridEditFormItem)

Dim Level2RadComboBox As RadComboBox = TryCast(item.FindControl("Level2RadComboBox"), RadComboBox)

' You can access both combobox here

End Sub

Protected Sub Level2RadComboBox_SelectedIndexChanged(sender As Object, e As RadComboBoxSelectedIndexChangedEventArgs)

Dim Level2RadComboBox As RadComboBox = TryCast(sender, RadComboBox)

Dim item As GridEditFormItem = TryCast(Level2RadComboBox.NamingContainer, GridEditFormItem)

Dim Level3RadComboBox As RadComboBox = TryCast(item.FindControl("Level3RadComboBox"), RadComboBox)

' You can access both combobox here

End Sub

Protected Sub RadGrid1_NeedDataSource(sender As Object, e As GridNeedDataSourceEventArgs)

Dim dt As DateTime = DateTime.Now

Dim data As dynamic = New () {New With { _

.ID = 1, _

.Name = "Name_1", _

.customdate = dt, _

.NO = 11.0 _

}, New With { _

.ID = 2, _

.Name = "Name2", _

.customdate = dt, _

.NO = 11.0 _

}, New With { _

.ID = 3, _

.Name = "Name3", _

.customdate = dt, _

.NO = 11.0 _

}, New With { _

.ID = 4, _

.Name = "Name4", _

.customdate = dt, _

.NO = 11.44 _

}, New With { _

.ID = 5, _

.Name = "Name5", _

.customdate = dt, _

.NO = 10.4 _

}}

RadGrid1.DataSource = data

End Sub

Let me know if any concern.

Thanks,
Jayesh Goyani