I have a RadGrid with which I need to add, update, and delete data. I've gotten the functionality to work, but I also need to do some checking on the data before it gets added/updated, including setting a field based on other data. I also want to log what was done.
My Insert functionality is working. The RadGrid is as follows:
<telerik:RadGrid ID="CarrierRadGrid" runat="server" AllowFilteringByColumn="True" AllowPaging="False" Width="100%" Height="800px" PageSize="20" da
AllowSorting="True" DataSourceID="CarrierData" ShowStatusBar="True"
OnInsertCommand="CarrierRadGrid_InsertCommand" OnItemInserted="CarrierRadGrid_ItemInserted" AllowAutomaticInserts="true"
OnUpdateCommand="CarrierRadGrid_UpdateCommand" OnItemUpdated="CarrierRadGrid_ItemUpdated" AllowAutomaticUpdates="true"
OnDeleteCommand="CarrierRadGrid_DeleteCommand" OnItemDeleted="CarrierRadGrid_ItemDeleted" AllowAutomaticDeletes="true"
Skin="Telerik" AutoGenerateColumns="False" AutoGenerateEditColumn="false" AutoGenerateDeleteColumn="false">
<ClientSettings EnableRowHoverStyle="true" EnablePostBackOnRowClick="false">
<Scrolling AllowScroll="true" UseStaticHeaders="true" SaveScrollPosition="true" FrozenColumnsCount="5" />
<Selecting AllowRowSelect="true" />
<Resizing AllowColumnResize="true" AllowResizeToFit="true" />
<ClientEvents OnRowDeleting="void 0" />
</ClientSettings>
<GroupingSettings CaseSensitive="false" />
<ExportSettings HideStructureColumns="true">
</ExportSettings>
<HeaderContextMenu EnableAutoScroll="False">
</HeaderContextMenu>
<MasterTableView DataKeyNames="CarrierScacID" DataSourceID="CarrierData" AllowAutomaticInserts="true" AllowAutomaticDeletes="True" AllowAutomaticUpdates="true"
CommandItemDisplay="Top" HierarchyLoadMode="ServerOnDemand" EditMode="InPlace">
<CommandItemSettings
ShowExportToWordButton="false"
ShowExportToCsvButton="false"
ShowExportToPdfButton="false"
ShowAddNewRecordButton="true">
</CommandItemSettings>
<Columns>
<telerik:GridEditCommandColumn ButtonType="ImageButton" CancelText="Cancel" EditText="Edit" InsertText="Add"
UpdateText="Update" HeaderStyle-Width="30px" UniqueName="CarrierEditButton" />
<telerik:GridClientDeleteColumn ButtonType="ImageButton" Text="Delete" HeaderStyle-Width="30px" UniqueName="CarrierDeleteButton"
ConfirmTextFields="CarrierScac" ConfirmTextFormatString="Are you sure you want to delete carrier {0}?" CommandName="Delete" />
<telerik:GridBoundColumn DataField="CarrierScacID" HeaderText="CarrierScacID" UniqueName="CarrierScacID" ReadOnly="True" Display="false" />
<telerik:GridTemplateColumn>
<EditItemTemplate>
<telerik:RadLabel runat="server" ID="CarrierScac" Text='<% #Bind("CarrierScac") %>' ViewStateMode="Disabled" Enabled="false" />
</EditItemTemplate>
<InsertItemTemplate>
<telerik:RadTextBox ID="CarrierScac" runat="server" Text='<% #Bind("CarrierScac") %>' />
</InsertItemTemplate>
<ItemTemplate>
<telerik:RadLabel runat="server" ID="CarrierScac" Text='<% #Bind("CarrierScac") %>' />
</ItemTemplate>
</telerik:GridTemplateColumn>
<telerik:GridBoundColumn DataField="CarrierScac" HeaderText="SCAC" UniqueName="CarrierScac" FilterControlWidth="40px" HeaderStyle-Width="75px" />
<telerik:GridBoundColumn DataField="CarrierName" HeaderText="Carrier Name" UniqueName="CarrierName" ItemStyle-Wrap="false"
HeaderStyle-Width="200px" FilterControlWidth="160px" FilterControlAltText="Filter by Carrier Name" SortExpression="CarrierName" />
<telerik:GridBoundColumn DataField="Address" HeaderText="Address" UniqueName="Address" ItemStyle-Wrap="false"
HeaderStyle-Width="200px" FilterControlWidth="160px" FilterControlAltText="Filter by Address" SortExpression="Address" />
<telerik:GridBoundColumn DataField="City" HeaderText="City" UniqueName="City" HeaderStyle-Width="100px" />
<telerik:GridBoundColumn DataField="State" HeaderText="State" UniqueName="State" FilterControlWidth="30px" HeaderStyle-Width="65px" />
<telerik:GridBoundColumn DataField="ZIP" HeaderText="ZIP" UniqueName="ZIP" FilterControlWidth="55px" HeaderStyle-Width="90px" />
<telerik:GridBoundColumn DataField="Country" HeaderText="Country" UniqueName="Country" FilterControlWidth="55px" HeaderStyle-Width="90px" />
<telerik:GridBoundColumn DataField="Contact" HeaderText="Contact" UniqueName="Contact" ItemStyle-Wrap="false" HeaderStyle-Width="110px" />
<telerik:GridBoundColumn DataField="Phone" HeaderText="Phone" UniqueName="Phone" ItemStyle-Wrap="false" HeaderStyle-Width="115px" />
<telerik:GridBoundColumn DataField="Fax" HeaderText="Fax" UniqueName="Fax" ItemStyle-Wrap="false" HeaderStyle-Width="115px" />
<telerik:GridBoundColumn DataField="User" HeaderText="User" UniqueName="User" HeaderStyle-Width="120px" ReadOnly="true" />
<telerik:GridBoundColumn DataField="Update" HeaderText="Update" UniqueName="Update" ItemStyle-Wrap="false" HeaderStyle-Width="230px" ReadOnly="true" />
<telerik:GridBoundColumn DataField="Comments" HeaderText="Comments" UniqueName="Comments" ItemStyle-Wrap="false" HeaderStyle-Width="230px" ReadOnly="true" />
</Columns>
</MasterTableView>
</telerik:RadGrid>
In code-behind, I have the following:
Protected Sub CarrierRadGrid_InsertCommand(sender As Object, e As GridCommandEventArgs)
e = SetCommentsField(e)
End Sub
Protected Sub CarrierRadGrid_ItemInserted(sender As Object, e As GridInsertedEventArgs)
Dim msg As String = String.Format("New carrier (Carrier Code: {0}) added to the database.", e.Item.Cells(6).Text)
Log(msg)
MessageBox(msg)
End Sub
Private Shared Function SetCommentsField(e As GridCommandEventArgs) As GridCommandEventArgs
If String.IsNullOrEmpty(e.Item.Cells(18).Text) Then
Dim update As String = e.Item.Cells(17).Text
If Not String.IsNullOrEmpty(update) Then
e.Item.Cells(18).Text = String.Format("Modified by {0}", update)
End If
End If
Return e
End Function
But when debugging, I find all of the e.Item.Cells Text properties are " ". Yet the record added to the database has the data I put into the fields, as it should.
What could be missing? Or extra?
EDIT: Including the whole RadGrid, instead of only the part I thought was relevant.
Below are two options to access the cell data.
because the data has not been put there yet. THe data entered only exists in the edit items. Protected Sub CarrierRadGrid_InsertCommand(sender As Object, e As GridCommandEventArgs)
'1
Dim insertValues As New Hashtable()
CType(e.Item, GridEditableItem).ExtractValues(insertValues)
Dim dd = insertValues("CarrierScac")
'2
Dim item As GridDataItem = CType(e.Item, GridDataItem)
Dim itemD = item("CarrierScac").Text
e = SetCommentsField(e)
End Sub
The above should get you what you need I suspect, however to add some color
Telerik uses to denote an empty/null cell text field which makes sense here because the cell text you are trying to grab does not exist. It IS empty and you ARE accessing it. The fields you are accessing, however, are read only and there does not appear to be a default value. Are you setting that elsewhere? I've included a function below that checks for String.IsNullOrEmpty and that we use frequently to spare some logic. I'd put it in a safe place and consume it as needed because empty cells in a radgrid will never actually be string.empty.
Public Function RadGridCellIsNullOrEmpty(value As String) As Boolean
value = value.Trim()
Return (String.IsNullOrEmpty(value) OrElse String.IsNullOrWhiteSpace(value) OrElse value.Contains(" "))
End Function
Private Shared Function SetCommentsField(byRef e As GridCommandEventArgs) As GridCommandEventArgs
If RadGridCellIsNullOrEmpty(e.Item.Cells(18).Text) Then
Dim update As String = e.Item.Cells(17).Text
If Not RadGridCellIsNullOrEmpty(update) Then
e.Item.Cells(18).Text = String.Format("Modified by {0}", update)
End If
End If
Return e
End Function