ComboBox Data Binding in XAML

Question

Hi

The ComboBox data binding is on a DataTable which is returned from a method call on a singleton instance object.

Here is my XAML

<Window x:Class="MainWindow"

xmlns=http://schemas.microsoft.com/winfx/2006/xaml/presentation

xmlns:x=http://schemas.microsoft.com/winfx/2006/xaml

xmlns:data="clr-namespace:System.Data;assembly=System.Data"

Title="Database" Height="495" Width="420" ResizeMode="CanResizeWithGrip">

<Window.Resources>

<ObjectDataProvider x:Key="DataTable"

ObjectType="{x:Type data:Sql.SqlDataSourceEnumerator}"/>

</Window.Resources>

<StackPanel>

<ComboBox Name="comboBoxServer"

ItemsSource="{Binding Source=

{x:Static data:Sql.SqlDataSourceEnumerator.Instance}}"

DisplayMemberPath="ServerName" />

</StackPanel>

</Window>

The method I want to call is GetDataSources(), for example in code it would appears:

System.Data.Sql.SqlDataSourceEnumerator.Instance.GetDataSources();

So the question is, how do I declarative make this call using XAML binding the return DataTable to a ComboBox?

Craig

Answer 1

 Read the following article;

http://msdn.microsoft.com/en-us/library/aa348824.aspx

---

Irfan Ahmad

Answer 2

Solution

<Window x:Class="MainWindow"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:data="clr-namespace:System.Data;assembly=System.Data"

Title="Database" Height="495" Width="420" ResizeMode="CanResizeWithGrip">

<Window.Resources>

<ObjectDataProvider

x:Key="DataTable"

ObjectInstance="{x:Static data:Sql.SqlDataSourceEnumerator.Instance}"

MethodName="GetDataSources"

IsAsynchronous="True"/>

</Window.Resources>

<StackPanel>

<ComboBox ItemsSource="{Binding Source={StaticResource DataTable}, Mode=OneWay}" DisplayNamePath="ServerName"/>

</StackPanel>

</Window>

Answer 3

Yes, that is what explained in the article I had pointed in my last post :-(

---

Irfan Ahmad

Answer 4

This works great, but being new to WPF and how to bind, I am wondering if there is a way to know when this process is complete.

Basically, I want to know if there is a way (BackgroundWorker, for example) to know when the asynchronous method is complete so I can enable other UI controls.
How would I be able to use XAML to tie WorkerSupportsCancellation="True" and cancel this request?

Also, what if I wanted the data to go directly to a model, wait for completion, and then update the combobox?