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Updating ObjectDataSource With RadComboBox and Multiple Selected Items

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Michael
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Michael asked on 01 Feb 2017, 08:01 PM

I have an ObjectDataSource bound to my Grid, and the Automatic Updating works fine for all controls except for the RadComboBox in one of my columns as I'm not sure how to bind to it.  In my ObjectDataSource, the values that are selected from the RadComboBox are stored in a List.  In a regular ListView, I would just grab the selected values and put them in a List and assign them to e.NewValues() in the ListView's ItemUpdating event.  I can't seem to figure out how to do something similar in the Grid's UpdateCommand event.  Below is some abbreviated code to show what I'm trying to do.  Appreciate any help you can offer.

Public Class MyCase
    Public Sub New()
    End Sub
 
    Private intId As Nullable(Of Integer)
    Public Property Id() As Nullable(Of Integer)
        Get
            Return intId
        End Get
        Set(ByVal value As Nullable(Of Integer))
            intId = value
        End Set
    End Property
 
    Private strCaseName As String
    Public Property CaseName() As String
        Get
            Return strCaseName
        End Get
        Set(ByVal value As String)
            strCaseName = value
        End Set
    End Property
 
    Private objCodes As List(Of MyCode) = New List(Of MyCode)
    Public Property CodeList() As List(Of MyCode)
        Get
            Return objCodes
        End Get
        Set(ByVal value As List(Of MyCode))
            objCodes = value
        End Set
    End Property
End Class
 
Public Class MyCode
    Public Sub New()
    End Sub
 
    Private intId As Nullable(Of Integer)
    Public Property Id() As Nullable(Of Integer)
        Get
            Return intId
        End Get
        Set(ByVal value As Nullable(Of Integer))
            intId = value
        End Set
    End Property
 
    Private strName As String
    Public Property Name() As String
        Get
            Return strName
        End Get
        Set(ByVal value As String)
            strName = value
        End Set
    End Property
End Class
 
Protected Sub gridCases_UpdateCommand(sender As Object, e As GridCommandEventArgs)
 
End Sub

 

<telerik:RadGrid RenderMode="Lightweight" runat="server" ID="gridCases" AutoGenerateColumns="false" AllowPaging="true" DataSourceID="odsCases" AllowSorting="true" OnUpdateCommand="gridCases_UpdateCommand" AllowAutomaticUpdates="true">
    <MasterTableView DataSourceID="odsCases" DataKeyNames="Id" CommandItemDisplay="Top" InsertItemPageIndexAction="ShowItemOnCurrentPage" EditMode="InPlace" CommandItemSettings-ShowRefreshButton="false">
        <Columns>
            <telerik:GridBoundColumn DataField="Id" ReadOnly="true" ForceExtractValue="Always" Visible="false" />
            <telerik:GridBoundColumn DataField="CaseName"></telerik:GridBoundColumn>
            <telerik:GridTemplateColumn HeaderText="Codes">
                <ItemTemplate>
                    <%#DataBinder.Eval(Container.DataItem, "Codes").ToString%>
                </ItemTemplate>
                <EditItemTemplate>
                    <telerik:RadComboBox RenderMode="Lightweight" ID="ddlCodes" runat="server" CheckBoxes="true" DataSourceID="odsCodes" DataTextField="Name"
                        DataValueField="Id">
                    </telerik:RadComboBox>
                </EditItemTemplate>
            </telerik:GridTemplateColumn>
            <telerik:GridEditCommandColumn></telerik:GridEditCommandColumn>
        </Columns>
    </MasterTableView>
    <PagerStyle Mode="NextPrevAndNumeric" />
</telerik:RadGrid>
<asp:ObjectDataSource ID="odsCases" runat="server" TypeName="MyCaseManager" DataObjectTypeName="MyCase" SelectMethod="GetList" UpdateMethod="Save">
</asp:ObjectDataSource>
<asp:ObjectDataSource ID="odsCodes" runat="server" DataObjectTypeName="MyCode" SelectMethod="GetCachedList" TypeName="MyCodeManager">
</asp:ObjectDataSource>

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Michael
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answered on 03 Feb 2017, 04:01 PM

I was able to resolve this by turning off AutomaticUpdates and doing the following.

Protected Sub gridCases_UpdateCommand(sender As Object, e As GridCommandEventArgs)
    Dim item = (DirectCast(e.Item, GridEditableItem))
    Dim myCase As MyCase = New MyCase()
    item.UpdateValues(myCase)
    Dim ddlCodes As RadComboBox = e.Item.FindControl("ddlCodes")
    Dim codeList As List(Of MyCode) = New List(Of MyCode)()
    For Each checkedItem In ddlCodes.CheckedItems
        codeList.Add(New MyCode(checkedItem.Value, checkedItem.Text))
    Next
    If codeList.Count() > 0 Then
        myCase.CodeList = codeList
    End If
    MyCaseManager.Save(myCase)
End Sub
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