Looking really nice Matt!!!
>Just sharing some small accomplishments I've had this week with LINQ and WPF.
>
>Screenshot here..
http://www.jordanmachine.com/wpf_screenshot_2008_06_24.jpg>(The UI is still very rough. I am mostly working on app structure at this time)
>
>There's a WPF ListView control that is populated with Customer objects of customers who have ActiveJobs at this time. Clicking on a Customer row will fire the SelectionChanged event to populate a ListView-in-GridView-mode with all ActiveJobs ojects for that customer. Clicking on an ActiveJobs grid row, will populate a ContentControl with more detail about the selected ActiveJob, and also populate another ListView-in-GridView-mode with all the OrderItem objects of line items that are on the selected ActiveJob.
>
>
>This method code (called by the ListView SelectionChanged event) shows 3 ways to determine which customer was picked in the ListView.
>
>Method 1 and 2 required setting SelectedValuePath="custno" on the ListView to indicate which field value is returned via the SelectedValue property.
>
>Method 3 lets (requires) you to tell it which field is the key.
>
>(So, take your pick... Tell it in XAML or tell it in the code-behind)
>
>
>
>
> private void GetJobs(object sender, SelectionChangedEventArgs e)
> {
> ///1. Here's one way, by hard-coding the name of the ListView name and its settings ---
> //var SelectedCustomerItem = lvCustomerList.SelectedItem;
> //string SelectedCustomerID = lvCustomerList.SelectedValue.ToString();
>
> //2. John Fenton's way. Requires proper object types be in place on the collection
> //var SelectedCustomerItem=(customer_source)e.AddedItems[0];
> //string SelectedCustomerID=SelectedCustomerItem.custno;
>
>
> //3. Here's another way, assuming a ListView made the call, but without knowing it's name
> //ListView lvSender = (ListView) sender;
> //string SelectedCustomerID = lvSender.SelectedValue.ToString();
>
> if (SelectedCustomerID != null)
> {
> IEnumerable<job_info> JobRecords = new job_info().GetActiveJobsByCustID(SelectedCustomerID);
> lvJobList.ItemsSource = JobRecords;
> DetailView.Content = JobRecords;
> }
>
> }
>
>>
>Here's the code to get the CustomerList of customers with ActiveJobs. Kind of a hack, anybody know a better way? It must be able to be cast to type (customer_source).
>
>
> private void GetCustomerList()
> {
> DataClasses1DataContext db = new DataClasses1DataContext();
>
> var subq = (from p in db.job_info
> join c in db.customers on p.cust_num equals c.custno
> where p.status == 'A'
> orderby c.company
> select c.custno).Distinct();
>
> IQueryable<customer_source> CustomerList = from a in db.customers
> where subq.Contains(a.custno)
> select a;
>
> //Populate the ListView
> lvCustomerList.ItemsSource = CustomerList;
>
>
>>
>Then, when a Customer is selected, it calls a custom method on the Job_Info class to GetActiveJobsByCustID.
>Here is that class code:
>
> public partial class job_info
> {
> public IEnumerable<job_info> GetActiveJobsByCustID(string CustID)
> {
> DataClasses1DataContext db = new DataClasses1DataContext();
> if (CustID != null)
> {
> IEnumerable<job_info> JobRecords = from a in db.job_info
> where a.cust_num == CustID && a.status == 'A'
> orderby a.priority, a.job_num
> select a;
> return JobRecords;
> }
> else
> {
> return null;
> }
> }
> }
>
>>
>
>And the code to get the JobItems detail records:
>
> private void GetJobItems(object sender, SelectionChangedEventArgs e)
> {
> ListView lvSender = (ListView)sender;
> string SelectedJobNum = lvSender.SelectedValue.ToString();
>
> if (SelectedJobNum != null)
> {
> IEnumerable<job_item> JobItems = new job_item().GetJobItemsByJobNo(SelectedJobNum);
> lvJobItems.ItemsSource = JobItems;
> }
> }
>>
>
>And lastly, here's the XAML:
>
>
><Window x:Class="wpf2.Window1"
> xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
> xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
> Title="Window1" Height="600" Width="800">
>
> <Window.Resources>
> <DataTemplate x:Key="DetailTemplate">
> <Border Width="300" Height="100" Margin="20" BorderBrush="Aqua" BorderThickness="1" Padding="8">
> <Grid>
> <Grid.RowDefinitions>
> <RowDefinition/>
> <RowDefinition/>
> <RowDefinition/>
> </Grid.RowDefinitions>
> <Grid.ColumnDefinitions>
> <ColumnDefinition/>
> <ColumnDefinition/>
> </Grid.ColumnDefinitions>
> <TextBlock Grid.Row="0" Grid.Column="0" Text="Job No:"/>
> <TextBlock Grid.Row="0" Grid.Column="1" Text="{Binding Path=job_num}"/>
> <TextBlock Grid.Row="1" Grid.Column="0" Text="PO No:"/>
> <TextBlock Grid.Row="1" Grid.Column="1" Text="{Binding Path=p_o_num}"/>
> <TextBlock Grid.Row="2" Grid.Column="0" Text="Status:"/>
> <TextBlock Grid.Row="2" Grid.Column="1" Text="{Binding Path=status}"/>
> </Grid>
> </Border>
> </DataTemplate>
></Window.Resources>
>
>
> <Grid>
> <Grid.RowDefinitions>
> <RowDefinition Height="Auto"></RowDefinition>
> <RowDefinition Height="*"></RowDefinition>
> </Grid.RowDefinitions>
> <Grid.ColumnDefinitions>
> <ColumnDefinition Width="275"></ColumnDefinition>
> <ColumnDefinition Width="*"></ColumnDefinition>
> </Grid.ColumnDefinitions>
> <StackPanel Orientation="Horizontal" Grid.Row="0">
> <TextBox x:Name="txtCustomerFilter" CharacterCasing="Upper" Width="100" Margin="5" KeyUp="ButtonSearch_Click"></TextBox>
> <Button x:Name="ButtonSearch" Width="50" Margin="5" Click="ButtonSearch_Click">Search</Button>
> </StackPanel>
>
> <ListView Name="lvCustomerList" HorizontalContentAlignment="Stretch" ScrollViewer.VerticalScrollBarVisibility="Visible"
> Grid.Row="1" Background="DarkGray"
> SelectedValuePath="custno" SelectionChanged="GetJobs">
> <ListView.ItemTemplate>
> <DataTemplate>
> <Border Margin="5" BorderThickness="1" BorderBrush="SlateGray" CornerRadius="4" Background="CadetBlue">
> <Grid Margin="3">
> <Grid.RowDefinitions>
> <RowDefinition></RowDefinition>
> <RowDefinition></RowDefinition>
> <RowDefinition></RowDefinition>
> <RowDefinition></RowDefinition>
> </Grid.RowDefinitions>
> <Grid.ColumnDefinitions>
> <ColumnDefinition></ColumnDefinition>
> </Grid.ColumnDefinitions>
> <StackPanel Orientation="Horizontal">
> <TextBlock FontWeight="Bold" Text="{Binding Path=custno}"></TextBlock>
> <TextBlock Text="{Binding Path=company}" Margin="5,0,0,0"></TextBlock>
> </StackPanel>
> <!--<StackPanel Grid.Row="1" Orientation="Horizontal">
<TextBlock>Phone:</TextBlock>
<TextBlock Text="{Binding Path=phone}" Margin="5,0,0,0"></TextBlock>
</StackPanel>
<StackPanel Grid.Row="2" Orientation="Horizontal">
<TextBlock>Fax:</TextBlock>
<TextBlock Text="{Binding Path=faxno}" Margin="5,0,0,0"></TextBlock>
</StackPanel>-->
> </Grid>
> </Border>
> </DataTemplate>
> </ListView.ItemTemplate>
> </ListView>
>
> <StackPanel VerticalAlignment="Top" Grid.Row="1" Grid.Column="1">
> <ListView x:Name="lvJobList" Height="250" VerticalAlignment="Stretch"
> SelectedValuePath="job_num" IsSynchronizedWithCurrentItem="True"
> SelectionChanged="GetJobItems">
> <ListView.View>
> <GridView>
> <GridViewColumn Width="100" Header="Job No" DisplayMemberBinding="{Binding Path=job_num}"></GridViewColumn>
> <GridViewColumn Width="100" Header="PO No" DisplayMemberBinding="{Binding Path=p_o_num}"></GridViewColumn>
> <GridViewColumn Width="100" Header="Ship Date" DisplayMemberBinding="{Binding Path=ship_date}"></GridViewColumn>
> </GridView>
> </ListView.View>
> </ListView>
> <ContentControl x:Name="DetailView" ContentTemplate="{StaticResource DetailTemplate}" />
>
> <ListView x:Name="lvJobItems" Height="250" VerticalAlignment="Stretch"
> SelectedValuePath="job_num" IsSynchronizedWithCurrentItem="True">
> <ListView.View>
> <GridView>
> <GridViewColumn Width="100" Header="Qty" DisplayMemberBinding="{Binding Path=qty}"></GridViewColumn>
> <GridViewColumn Width="100" Header="PartNo" DisplayMemberBinding="{Binding Path=part_no}"></GridViewColumn>
> <GridViewColumn Width="100" Header="DwgNo" DisplayMemberBinding="{Binding Path=dwg_no}"></GridViewColumn>
> </GridView>
> </ListView.View>
> </ListView>
> </StackPanel>
> </Grid>
>
></Window>
>>
>
>Sorry, I hope I haven't bored anyone here. I'm just so excited about this I have to share it.
>
>All comments welcomed.
