DataGrid not reflecting changes after INSERT into Table. Delete from Table does.

Question

Wow, it's been a while.
Hope you guys can help.
This is my DataGrid:
<DataGrid DataContext="{StaticResource TableAssetsViewSource}" ItemsSource="{Binding}" x:Name="TableAssetsDataGrid" AutoGenerateColumns="False" EnableRowVirtualization="True" Margin="15,10,10,10" RowDetailsVisibilityMode="VisibleWhenSelected" Grid.Column="1" HeadersVisibility="Column" CanUserResizeRows="False" IsReadOnly="True">
<DataGrid.CellStyle>
<Style TargetType="DataGridCell">
<Setter Property="BorderThickness" Value="0"/>
</Style>
</DataGrid.CellStyle>
<DataGrid.Columns>
<DataGridTextColumn x:Name="NodeColumn" Binding="{Binding node}" Header="VS Number" Width="*"/>
<DataGridTextColumn x:Name="SerialColumn" Binding="{Binding serial}" Header="Serial Number" Width="*"/>
<DataGridTextColumn x:Name="NameColumn" Binding="{Binding name}" Header="Asset Name" Width="*"/>
<DataGridTextColumn x:Name="TypeColumn" Binding="{Binding type}" Header="Asset Type" Width="*"/>
<DataGridTextColumn x:Name="_dateColumn" Binding="{Binding date}" Header="Date Allocated" Width="*"/>
<DataGridTextColumn x:Name="PoColumn" Binding="{Binding po}" Header="Purchase Order" Width="*"/>
</DataGrid.Columns>
</DataGrid>
This is where I add a new Row to the Table:
Private Sub Button_Click_1(sender As Object, e As RoutedEventArgs)
Dim cbblocation As ComboBox = Me.FindName("LocationComboBox")
Dim row As DataRowView = DirectCast(cbblocation.SelectedItem, DataRowView)
Dim cbbtext As String = row.Item("node")
Dim cbbtype As ComboBox = Me.FindName("comboBoxType")
Dim cbbtext2 As String = cbbtype.Text
Dim RETAILISOAMDDataSet As Retail_ISO_AMD.RETAILISOAMDDataSet = CType(Me.FindResource("RETAILISOAMDDataSet"), Retail_ISO_AMD.RETAILISOAMDDataSet)
Dim RETAILISOAMDDataSetTableAssetsTableAdapter As Retail_ISO_AMD.RETAILISOAMDDataSetTableAdapters.tableAssetsTableAdapter = New Retail_ISO_AMD.RETAILISOAMDDataSetTableAdapters.tableAssetsTableAdapter()
RETAILISOAMDDataSetTableAssetsTableAdapter.AddNewAsset(cbbtext, txbSerial.Text, txbName.Text, cbbtext2, Date.Today, txbPO.Text)
node = cbbtext
Dim mp As New MainPage
mp.RefreshGrid(node)
Me.Close()
End Sub
The RefreshGrid method:
Public Sub RefreshGrid(node As String)
Dim RETAILISOAMDDataSet As Retail_ISO_AMD.RETAILISOAMDDataSet = CType(Me.FindResource("RETAILISOAMDDataSet"), Retail_ISO_AMD.RETAILISOAMDDataSet)
Dim RETAILISOAMDDataSetTableAssetsTableAdapter As Retail_ISO_AMD.RETAILISOAMDDataSetTableAdapters.tableAssetsTableAdapter = New Retail_ISO_AMD.RETAILISOAMDDataSetTableAdapters.tableAssetsTableAdapter()
RETAILISOAMDDataSetTableAssetsTableAdapter.FillByNode(RETAILISOAMDDataSet.tableAssets, node)
Dim TableAssetsViewSource As System.Windows.Data.CollectionViewSource = CType(Me.FindResource("TableAssetsViewSource"), System.Windows.Data.CollectionViewSource)
Dim be As BindingExpression = BindingOperations.GetBindingExpression(TableAssetsViewSource, CollectionViewSource.SourceProperty)
be.UpdateTarget()
End Sub
And this is what I use to delete a row from the table (and without doing anything special, the DataGrid auto-updates with the changes):
Private Sub Button_Click_4(sender As Object, e As RoutedEventArgs)
If TableAssetsDataGrid.SelectedIndex = -1 Then
MsgBox("You have selected nothing to Delete!", MsgBoxStyle.OkOnly, "Nothing Selected")
Else
Dim dgv As DataGridTextColumn = Me.FindName("NodeColumn")
Dim row As DataRowView = DirectCast(Me.TableAssetsDataGrid.SelectedItem, DataRowView)
Dim dgvText As String = row.Item("node")
Dim dgv2 As DataGridTextColumn = Me.FindName("SerialColumn")
Dim row2 As DataRowView = DirectCast(Me.TableAssetsDataGrid.SelectedItem, DataRowView)
Dim dgvText2 As String = row.Item("serial")
Dim dgv3 As DataGridTextColumn = Me.FindName("NameColumn")
Dim row3 As DataRowView = DirectCast(Me.TableAssetsDataGrid.SelectedItem, DataRowView)
Dim dgvText3 As String = row.Item("name")
Dim dgv4 As DataGridTextColumn = Me.FindName("TypeColumn")
Dim row4 As DataRowView = DirectCast(Me.TableAssetsDataGrid.SelectedItem, DataRowView)
Dim dgvText4 As String = row.Item("type")
Dim dgv5 As DataGridTextColumn = Me.FindName("_dateColumn")
Dim row5 As DataRowView = DirectCast(Me.TableAssetsDataGrid.SelectedItem, DataRowView)
Dim dgvText5 As String = row.Item("date")
Dim dgv6 As DataGridTextColumn = Me.FindName("POColumn")
Dim row6 As DataRowView = DirectCast(Me.TableAssetsDataGrid.SelectedItem, DataRowView)
Dim dgvText6 As String = row.Item("po")
Dim RETAILISOAMDDataSet As Retail_ISO_AMD.RETAILISOAMDDataSet = CType(Me.FindResource("RETAILISOAMDDataSet"), Retail_ISO_AMD.RETAILISOAMDDataSet)
Dim RETAILISOAMDDataSetTableAssetsTableAdapter As Retail_ISO_AMD.RETAILISOAMDDataSetTableAdapters.tableAssetsTableAdapter = New Retail_ISO_AMD.RETAILISOAMDDataSetTableAdapters.tableAssetsTableAdapter()
RETAILISOAMDDataSetTableAssetsTableAdapter.RemoveAsset(dgvText, dgvText2, dgvText3, dgvText4, dgvText5, dgvText6)
Dim cbb As ComboBox = Me.FindName("cbbLocation")
Dim row7 As DataRowView = DirectCast(cbb.SelectedItem, DataRowView)
Dim cbbtext As String = row.Item("node")
RefreshGrid(cbbtext)
End If
End Sub
--------- End of Edit
It is bound to a Dataset which gets it's data from a SQL Database.
Loading the Data and Filtering the data based on certain conditions work 100%. The problem I am having is as follows:
I have a form on the Page that takes input and inserts a row into the Database. When this happens, the DataGrid won't automatically reflect the changes (even if I recall the Fill Method of the Dataset). No matter what I do, I have to refresh the entire page
and THEN Fill the Dataset to see any changes.
This is what strikes me as odd...
When I do a delete row operation on the Database (Custom Method on the Dataset with conditions), and just Fill the Dataset again (without doing anything special), the row deletes and the changes is reflected IMMEDIATELY.
What am I doing wrong here? Why would Delete Row reflect the changes on the DataGrid but no Insert Row?
Thanks in Advance.
(P.S. I am very rusty with my developing skills, I haven't done this in YEARS)

Answer 1

>>And what about the the most important question, how exactly is TableAssetsViewSource defined in the XAML markup and what is
its Source property set or bound to? And what about the reproducable sample...?
Here is the Markup of the TableAssetsViewSource:
<Page.Resources>
<local:RETAILISOAMDDataSet x:Key="RETAILISOAMDDataSet"/>
<CollectionViewSource x:Key="TableRegionsViewSource" Source="{Binding tableRegions, Source={StaticResource RETAILISOAMDDataSet}}"/>
<CollectionViewSource x:Key="TableLocationsViewSource" Source="{Binding tableLocations, Source={StaticResource RETAILISOAMDDataSet}}"/>
<CollectionViewSource x:Key="TableAssetsViewSource" Source="{Binding tableAssets, Source={StaticResource RETAILISOAMDDataSet}}"/>
</Page.Resources>
The ItemsSource of the DataGrid is bound to the TableAssetsViewSource:
<DataGrid DataContext="{StaticResource TableAssetsViewSource}" ItemsSource="{Binding}" x:Name="TableAssetsDataGrid" AutoGenerateColumns="False" EnableRowVirtualization="True" Margin="15,10,10,10" RowDetailsVisibilityMode="VisibleWhenSelected" Grid.Column="1" HeadersVisibility="Column" CanUserResizeRows="False" IsReadOnly="True">
Just remember, this code was auto-generated with the drag & drop onto the Page, so I did little in terms of setting the actual bindings.
All in all, what I have done so far works as intended, except that when I want to add a row to the table it does not reflect, and that it only shows after refreshing/restarting the application.
I will try and put together a reproducable sample.