Problem with Silverlight Datagrid

  • Thread starter Thread starter creaves0622
  • Start date Start date
C

creaves0622

I have a nested datagrid in a xaml file, the parent datagrid loads the vendor
information and the details loads the documents for that vendor in a
datagrid. Everything is working fine until I click in the child datagrid and
then go to the combobox and choose another vendor. When the new vendor is
loaded nothing shows in the datagrid but the itemsource shows the info is
there. Know if I click on the child cell and then click back on the parent
cell everything works fine.

I need to either select a cell programmatically from the parent datagrid to
change the focus back on that, or fix the problem with the datagrid not
showing up

XAML
XAML

<UserControl
xmlns:data="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Data"

xmlns:basics="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls" x:Class="ITAccountReport.Page"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="25"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="25"/>
<ColumnDefinition Width="380"/>
<ColumnDefinition Width="260"/>
<ColumnDefinition Width="260"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="25"/>
</Grid.ColumnDefinitions>
<Grid.Background>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="#3E5f8a" Offset="0.259"/>
<GradientStop Color="#FFFFFFFF" Offset="1"/>
</LinearGradientBrush>
</Grid.Background>
<TextBlock x:Name="txtVendorName" HorizontalAlignment="Left"
Grid.Row="0" Grid.Column="0" Grid.ColumnSpan="2" Text="Vendor Name"
Width="Auto" Foreground="White" Margin="0,0,0,0"/>
<ComboBox x:Name="cbVendorName" HorizontalAlignment="Left"
Margin="80,0,0,0" Grid.Row="0" Grid.Column="0" Grid.ColumnSpan="2"
Width="300" />
<TextBlock Grid.Row="0" Grid.Column="2" HorizontalAlignment="left"
x:Name="txtSelectStartDate" Foreground="White" Text="Select Start Date"/>
<basics:DatePicker Grid.Row="0" HorizontalAlignment="Left"
Margin="100,0,0,0" Grid.Column="2" x:Name="dtStartDate" Width="150" />
<TextBlock Grid.Row="0" Grid.Column="3" HorizontalAlignment="Left"
x:Name="txtSelectEndDate" Text="Select End Date" Foreground="White" />
<basics:DatePicker Grid.Row="0" HorizontalAlignment="Left"
Margin="100,0,0,0" Grid.Column="3" x:Name="dtEndDate" Width="150" />
<Button x:Name="Search" Content="Search" HorizontalAlignment="Left"
Grid.Column="4" Grid.ColumnSpan="2"/>
<data:DataGrid x:Name="FolderDatagrid"
AutoGenerateColumns="False" IsReadOnly="True" Grid.Row="1" Grid.Column="1"
Grid.ColumnSpan="4">
<data:DataGrid.Background>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="white" Offset="0.259"/>
<GradientStop Color="#C1C1C1" Offset="1"/>
</LinearGradientBrush>
</data:DataGrid.Background>
<data:DataGrid.Columns>
<data:DataGridTextColumn Header="Folder Number"
Binding="{Binding FLD_RSN}" Visibility="Collapsed" />
<data:DataGridTextColumn Header="Vendor ID" Width="100"
Binding="{Binding A_VENDOR_ID}" />
<data:DataGridTextColumn Header="Vendor Name" Width="200"
Binding="{Binding A_VENDOR_NAME}" />
<data:DataGridTextColumn Header="Vendor Desc" Width="500"
Binding="{Binding A_VDR_DESC}" />
</data:DataGrid.Columns>
<data:DataGrid.RowDetailsTemplate>
<DataTemplate>
<data:DataGrid x:Name="DocumentDataGrid"
AreRowDetailsFrozen="True" RowDetailsVisibilityMode="Collapsed"
HorizontalGridLinesBrush="Black" GridLinesVisibility="All"
BorderBrush="Black" BorderThickness="2" AutoGenerateColumns="FALSE"
ItemsSource="{Binding CAWDOCUMENT}" Height="419" Margin="0,-5,0,0"
IsReadOnly="True" VerticalAlignment="Bottom" >

<data:DataGrid.Background>
<LinearGradientBrush EndPoint="0.5,1"
StartPoint="0.5,0">
<GradientStop Color="#C1C1C1" Offset="0.259"/>
<GradientStop Color="#FFFFFFFF" Offset="1"/>
</LinearGradientBrush>
</data:DataGrid.Background>
<data:DataGrid.Columns>
<data:DataGridTextColumn Header="DOC_RSN"
Binding="{Binding DOC_RSN}" Visibility="Collapsed" />
<data:DataGridTextColumn Header="DOC TYPE"
Width="100" Binding="{Binding DOC_TYPE}" />
<data:DataGridTextColumn Header="DOC
Description" Width="200" Binding="{Binding DOC_DESC}" />
<data:DataGridTextColumn Header="Check Number"
Width="100" Binding="{Binding A_CHECK_NO}" />
<data:DataGridTextColumn Header="Amount"
Width="100" Binding="{Binding A_AMOUNT}"/>
<data:DataGridTextColumn Header="Check Date"
Width="600" Binding="{Binding A_CHECK_DATE}"/>
<data:DataGridTemplateColumn Header="Image"
Width="100">
<data:DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<HyperlinkButton Content="Image"
TargetName="Image" Foreground="White" NavigateUri="{Binding IMAGE_FILE}">
<HyperlinkButton.Background >
<LinearGradientBrush
EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop
Color="#3E5f8a" Offset="0.259"/>
<GradientStop
Color="#FFFFFFFF" Offset="1"/>
</LinearGradientBrush>
</HyperlinkButton.Background>
</HyperlinkButton>
</DataTemplate>
</data:DataGridTemplateColumn.CellTemplate>
</data:DataGridTemplateColumn>
</data:DataGrid.Columns>
</data:DataGrid>
</DataTemplate>
</data:DataGrid.RowDetailsTemplate>
</data:DataGrid>
</Grid>

</UserControl>

Code Behind
Imports System.Windows.Data
Partial Public Class Page
Inherits UserControl
Dim ClientHost As ServiceReference1.Service1Client = New
ServiceReference1.Service1Client
Dim dg As New DataGrid
Dim folderrow As ServiceReference1.CAWFOLDER
Public Sub New()
InitializeComponent()
AddHandler ClientHost.GetVendorCompleted, AddressOf
ClientHost_GetVendorCompleted
ClientHost.GetVendorAsync()
End Sub
Private Sub ClientHost_GetVendorCompleted(ByVal sender As Object, ByVal
e As ServiceReference1.GetVendorCompletedEventArgs)
If Not e.Result Is Nothing Then
For Each item In e.Result
cbVendorName.Items.Add(item)
Next
End If
End Sub
Private Sub cbVendorName_SelectionChanged(ByVal sender As Object, ByVal
e As System.Windows.Controls.SelectionChangedEventArgs) Handles
cbVendorName.SelectionChanged
AddHandler ClientHost.GetVendorInfoCompleted, AddressOf
ClientHost_GetVendorInfoCompleted
ClientHost.GetVendorInfoAsync(cbVendorName.SelectedItem.ToString)
End Sub
Private Sub ClientHost_GetVendorInfoCompleted(ByVal sender As Object,
ByVal e As ServiceReference1.GetVendorInfoCompletedEventArgs)


If Not e.Result Is Nothing Then
FolderDatagrid.ItemsSource = e.Result
End If
End Sub


Private Sub FolderDatagrid_LoadingRowDetails(ByVal sender As Object,
ByVal e As System.Windows.Controls.DataGridRowDetailsEventArgs) Handles
FolderDatagrid.LoadingRowDetails
FolderDatagrid.SelectedIndex = e.Row.GetIndex
AddHandler ClientHost.GetVendorDocsCompleted, AddressOf
clientHost_GetVendorDocCompleted
Dim row As ServiceReference1.CAWFOLDER = FolderDatagrid.SelectedItem()
folderrow = row
If Not row Is Nothing Then
dg = e.DetailsElement.FindName("DocumentDataGrid")
ClientHost.GetVendorDocsAsync(row.FLD_RSN)
End If
End Sub
Private Sub clientHost_GetVendorDocCompleted(ByVal sender As Object,
ByVal e As ServiceReference1.GetVendorDocsCompletedEventArgs)
If Not e.Result Is Nothing Then
dg.ItemsSource = e.Result
End If
End Sub



End Class
 
I have a nested datagrid in a xaml file, the parent datagrid loads the vendor
information and the details loads the documents for that vendor in a
datagrid. Everything is working fine until I click in the child datagrid and
then go to the combobox and choose another vendor. When the new vendor is
loaded nothing shows in the datagrid but the itemsource shows the info is
there. Know if I click on the child cell and then click back on the parent
cell everything works fine.

I need to either select a cell programmatically from the parent datagrid to
change the focus back on that, or fix the problem with the datagrid not
showing up

XAML
XAML

<UserControl
xmlns:data="clr-namespace:System.Windows.Controls;assembly=System.Windows.C ontrols.Data"

xmlns:basics="clr-namespace:System.Windows.Controls;assembly=System.Windows .Controls"  x:Class="ITAccountReport.Page"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="25"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="25"/>
            <ColumnDefinition Width="380"/>
            <ColumnDefinition Width="260"/>
            <ColumnDefinition Width="260"/>
            <ColumnDefinition Width="*"/>
            <ColumnDefinition Width="25"/>
        </Grid.ColumnDefinitions>
        <Grid.Background>
            <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
                <GradientStop Color="#3E5f8a" Offset="0.259"/>
                <GradientStop Color="#FFFFFFFF" Offset="1"/>
            </LinearGradientBrush>
        </Grid.Background>
        <TextBlock x:Name="txtVendorName" HorizontalAlignment="Left"  
Grid.Row="0" Grid.Column="0" Grid.ColumnSpan="2" Text="Vendor Name"
Width="Auto" Foreground="White" Margin="0,0,0,0"/>
        <ComboBox  x:Name="cbVendorName"  HorizontalAlignment="Left"
Margin="80,0,0,0" Grid.Row="0" Grid.Column="0" Grid.ColumnSpan="2"
Width="300" />
        <TextBlock Grid.Row="0" Grid.Column="2" HorizontalAlignment="left"
x:Name="txtSelectStartDate" Foreground="White"  Text="Select Start Date"/>
        <basics:DatePicker Grid.Row="0" HorizontalAlignment="Left"
Margin="100,0,0,0" Grid.Column="2" x:Name="dtStartDate" Width="150" />
        <TextBlock Grid.Row="0" Grid.Column="3" HorizontalAlignment="Left"  
x:Name="txtSelectEndDate" Text="Select End Date" Foreground="White"/>
        <basics:DatePicker Grid.Row="0" HorizontalAlignment="Left"
Margin="100,0,0,0"  Grid.Column="3" x:Name="dtEndDate" Width="150"  />
        <Button x:Name="Search" Content="Search" HorizontalAlignment="Left"  
Grid.Column="4" Grid.ColumnSpan="2"/>
        <data:DataGrid x:Name="FolderDatagrid"      
AutoGenerateColumns="False" IsReadOnly="True" Grid.Row="1" Grid.Column="1"
Grid.ColumnSpan="4">
            <data:DataGrid.Background>
                <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
                    <GradientStop Color="white" Offset="0.259"/>
                    <GradientStop Color="#C1C1C1" Offset="1"/>
                </LinearGradientBrush>
            </data:DataGrid.Background>
            <data:DataGrid.Columns>
                <data:DataGridTextColumn Header="FolderNumber"
Binding="{Binding FLD_RSN}" Visibility="Collapsed" />
                <data:DataGridTextColumn Header="VendorID" Width="100"
Binding="{Binding A_VENDOR_ID}" />
                <data:DataGridTextColumn Header="VendorName" Width="200"
Binding="{Binding A_VENDOR_NAME}" />
                <data:DataGridTextColumn Header="VendorDesc" Width="500"
Binding="{Binding A_VDR_DESC}" />
            </data:DataGrid.Columns>
            <data:DataGrid.RowDetailsTemplate>
                <DataTemplate>
                    <data:DataGrid x:Name="DocumentDataGrid"
AreRowDetailsFrozen="True"  RowDetailsVisibilityMode="Collapsed"  
HorizontalGridLinesBrush="Black" GridLinesVisibility="All"  
BorderBrush="Black" BorderThickness="2"  AutoGenerateColumns="FALSE"
ItemsSource="{Binding CAWDOCUMENT}"   Height="419" Margin="0,-5,0,0"
IsReadOnly="True"  VerticalAlignment="Bottom" >

                        <data:DataGrid.Background>
                            <LinearGradientBrush EndPoint="0.5,1"
StartPoint="0.5,0">
                                <GradientStop Color="#C1C1C1" Offset="0.259"/>
                                <GradientStop Color="#FFFFFFFF" Offset="1"/>
                            </LinearGradientBrush>
                        </data:DataGrid.Background>
                        <data:DataGrid.Columns>
                            <data:DataGridTextColumn Header="DOC_RSN"
Binding="{Binding DOC_RSN}" Visibility="Collapsed" />
                            <data:DataGridTextColumn Header="DOC TYPE"
Width="100" Binding="{Binding DOC_TYPE}" />
                            <data:DataGridTextColumn Header="DOC
Description" Width="200" Binding="{Binding DOC_DESC}" />
                            <data:DataGridTextColumn Header="Check Number"
Width="100" Binding="{Binding A_CHECK_NO}" />
                            <data:DataGridTextColumn Header="Amount"
Width="100" Binding="{Binding A_AMOUNT}"/>
                            <data:DataGridTextColumn Header="Check Date"
Width="600" Binding="{Binding A_CHECK_DATE}"/>
                            <data:DataGridTemplateColumn Header="Image"
Width="100">
                                <data:DataGridTemplateColumn.CellTemplate>
                                    <DataTemplate>
                                        <HyperlinkButton  Content="Image"
TargetName="Image" Foreground="White"  NavigateUri="{Binding IMAGE_FILE}">
                                            <HyperlinkButton.Background >
                                                <LinearGradientBrush
EndPoint="0.5,1" StartPoint="0.5,0">
                                                    <GradientStop
Color="#3E5f8a" Offset="0.259"/>
                                                    <GradientStop
Color="#FFFFFFFF" Offset="1"/>
                                                </LinearGradientBrush>
                                            </HyperlinkButton.Background>
                                        </HyperlinkButton>
                                    </DataTemplate>
                                </data:DataGridTemplateColumn.CellTemplate>
                            </data:DataGridTemplateColumn>
                        </data:DataGrid.Columns>
                    </data:DataGrid>
                </DataTemplate>
            </data:DataGrid.RowDetailsTemplate>
        </data:DataGrid>
    </Grid>

</UserControl>

Code Behind
Imports System.Windows.Data
Partial Public Class Page
    Inherits UserControl
    Dim ClientHost As ServiceReference1.Service1Client = New
ServiceReference1.Service1Client
    Dim dg As New DataGrid
    Dim folderrow As ServiceReference1.CAWFOLDER
    Public Sub New()
        InitializeComponent()
        AddHandler ClientHost.GetVendorCompleted, AddressOf
ClientHost_GetVendorCompleted
        ClientHost.GetVendorAsync()
    End Sub
    Private Sub ClientHost_GetVendorCompleted(ByVal sender As Object,ByVal
e As ServiceReference1.GetVendorCompletedEventArgs)
        If Not e.Result Is Nothing Then
            For Each item In e.Result
                cbVendorName.Items.Add(item)
            Next
        End If
    End Sub
    Private Sub cbVendorName_SelectionChanged(ByVal sender As Object,ByVal
e As System.Windows.Controls.SelectionChangedEventArgs) Handles
cbVendorName.SelectionChanged
        AddHandler ClientHost.GetVendorInfoCompleted, AddressOf
ClientHost_GetVendorInfoCompleted
        ClientHost.GetVendorInfoAsync(cbVendorName.SelectedItem.ToString)
    End Sub
    Private Sub ClientHost_GetVendorInfoCompleted(ByVal sender As Object,
ByVal e As ServiceReference1.GetVendorInfoCompletedEventArgs)

        If Not e.Result Is Nothing Then
            FolderDatagrid.ItemsSource = e.Result
        End If
    End Sub

    Private Sub FolderDatagrid_LoadingRowDetails(ByVal sender As Object,
ByVal e As System.Windows.Controls.DataGridRowDetailsEventArgs) Handles
FolderDatagrid.LoadingRowDetails
        FolderDatagrid.SelectedIndex = e.Row.GetIndex
        AddHandler ClientHost.GetVendorDocsCompleted, AddressOf
clientHost_GetVendorDocCompleted
        Dim row As ServiceReference1.CAWFOLDER = FolderDatagrid..SelectedItem()
        folderrow = row
        If Not row Is Nothing Then
            dg = e.DetailsElement.FindName("DocumentDataGrid")
            ClientHost.GetVendorDocsAsync(row.FLD_RSN)
        End If
    End Sub
    Private Sub clientHost_GetVendorDocCompleted(ByVal sender As Object,
ByVal e As ServiceReference1.GetVendorDocsCompletedEventArgs)
        If Not e.Result Is Nothing Then
            dg.ItemsSource = e.Result
        End If
    End Sub

End Class
Click to expand...

Yikes!

I would highly suggest that you post any Silverlight questions on the
forums at http://silverlight.net/ as you are more likely to receive a
response there. I would also suggest that you trim the size of you
message down, alot. Being volunteers here, most of us (myself
included) will just skip over long threads. It's much better to have a
couple sentences and maybe a small code sample to illustrate the
problem.

Thanks,

Seth Rowe [MVP]
http://sethrowe.blogspot.com/
 
Thanks for the response I will do that, Most places that I post questions
want all the source code, but I will try and take some of it out and repost
it on silverlight.net, thanks for your time
 
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