Vista - Problems with Dependency Properties and composite controls

Hi!

I have crated a composite control with a Dependency Property. When I try to
bind my Dependency Property to any other property I do not get it to work. It
is probably some sort of namespace problem, but I have no idea how to solve
it. Does anybody know?
I am using the Feb CTP

Here is my composite control

<Grid x:Class="TestBinding.MyTextBox"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">

<TextBox Name="InternalTextBox" Text="Test"/>

</Grid>

namespace TestBinding
{
/// <summary>
/// Interaction logic for UserControl1.xaml
/// </summary>

public partial class MyTextBox : Grid
{
public MyTextBox()
{
InitializeComponent();
}
public override void EndInit()
{
base.EndInit();
InternalTextBox.GotFocus += new
RoutedEventHandler(InternalTextBox_GotFocus);
}

void InternalTextBox_GotFocus(object sender, RoutedEventArgs e)
{
int MyValue = this.MyInteger;
}

public int MyInteger
{
get { return (int)GetValue(MyIntegerProperty); }
set { SetValue(MyIntegerProperty, value); }
}

// Using a DependencyProperty as the backing store for MyInteger.
This enables animation, styling, binding, etc...
public static readonly DependencyProperty MyIntegerProperty =
DependencyProperty.Register("MyInteger", typeof(int),
typeof(MyTextBox), new UIPropertyMetadata(0));
}
}


and here is the actual bindin code in my Window. It is the local:MyTextBox
that I have problems with.

<Window x:Class="TestBinding.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:TestBinding"

Title="TestBinding" Height="300" Width="300"
>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition />
<ColumnDefinition />
</Grid.ColumnDefinitions>

<TextBox Name="MinText" Grid.Column="0" MaxLength="100">Test</TextBox>
<TextBox Grid.Column="1" Text="{Binding ElementName=MinText,
Path=MaxLength}"/>
<local:MyTextBox Grid.Column="2" x:Name="pelle" MyInteger="{Binding
ElementName=MinText, Path=MaxLength}" />
</Grid>
</Window>

When you say it doesn't work, what does it do? Is it solved by putting
"local:" in front of MyInteger="{Binding ...}" ?

-Nick Kramer [MSFT]

---
This posting is provided "AS IS" with no warranties, and confers no rights.
Use of included script samples are subject to the terms specified at
http://www.microsoft.com/info/cpyright.htm

"Rickard Eklind" <Rickard Eklind@discussions.microsoft.com> wrote in message
newsA5CD3A9-D0C0-4425-BBB3-207CFEA14FA3@microsoft.com...
> Hi!
>
> I have crated a composite control with a Dependency Property. When I try
> to
> bind my Dependency Property to any other property I do not get it to work.
> It
> is probably some sort of namespace problem, but I have no idea how to
> solve
> it. Does anybody know?
> I am using the Feb CTP
>
> Here is my composite control
>
> <Grid x:Class="TestBinding.MyTextBox"
> xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
> xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
>
> <TextBox Name="InternalTextBox" Text="Test"/>
>
> </Grid>
>
> namespace TestBinding
> {
> /// <summary>
> /// Interaction logic for UserControl1.xaml
> /// </summary>
>
> public partial class MyTextBox : Grid
> {
> public MyTextBox()
> {
> InitializeComponent();
> }
> public override void EndInit()
> {
> base.EndInit();
> InternalTextBox.GotFocus += new
> RoutedEventHandler(InternalTextBox_GotFocus);
> }
>
> void InternalTextBox_GotFocus(object sender, RoutedEventArgs e)
> {
> int MyValue = this.MyInteger;
> }
>
> public int MyInteger
> {
> get { return (int)GetValue(MyIntegerProperty); }
> set { SetValue(MyIntegerProperty, value); }
> }
>
> // Using a DependencyProperty as the backing store for MyInteger.
> This enables animation, styling, binding, etc...
> public static readonly DependencyProperty MyIntegerProperty =
> DependencyProperty.Register("MyInteger", typeof(int),
> typeof(MyTextBox), new UIPropertyMetadata(0));
> }
> }
>
>
> and here is the actual bindin code in my Window. It is the local:MyTextBox
> that I have problems with.
>
> <Window x:Class="TestBinding.Window1"
> xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
> xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
> xmlns:local="clr-namespace:TestBinding"
>
> Title="TestBinding" Height="300" Width="300"
> >
> <Grid>
> <Grid.ColumnDefinitions>
> <ColumnDefinition />
> <ColumnDefinition />
> <ColumnDefinition />
> </Grid.ColumnDefinitions>
>
> <TextBox Name="MinText" Grid.Column="0"
> MaxLength="100">Test</TextBox>
> <TextBox Grid.Column="1" Text="{Binding ElementName=MinText,
> Path=MaxLength}"/>
> <local:MyTextBox Grid.Column="2" x:Name="pelle" MyInteger="{Binding
> ElementName=MinText, Path=MaxLength}" />
> </Grid>
> </Window>
>
>
>
>
>

Thanks for your answer Nick. But I still do not get it to work.
When I say it does not worka I mean: The application does run, but when I
set focus on my internal textbox and fetching the value on the dependency
property
int MyValue = this.MyInteger;
the value is 0, and the intentiion was that it should be 100 because of the
binding.

I have tried this
<local:MyTextBox Grid.Column="2" x:Name="pelle" local:MyInteger="{Binding>
ElementName=MinText, Path=MaxLength}" />
in the xaml code but it it does not get any better (or worse)

Regards
Rickard Eklind

"Nick Kramer [MSFT]" wrote:

> When you say it doesn't work, what does it do? Is it solved by putting
> "local:" in front of MyInteger="{Binding ...}" ?
>
> -Nick Kramer [MSFT]
>
> ---
> This posting is provided "AS IS" with no warranties, and confers no rights.
> Use of included script samples are subject to the terms specified at
> http://www.microsoft.com/info/cpyright.htm
>
> "Rickard Eklind" <Rickard Eklind@discussions.microsoft.com> wrote in message
> newsA5CD3A9-D0C0-4425-BBB3-207CFEA14FA3@microsoft.com...
> > Hi!
> >
> > I have crated a composite control with a Dependency Property. When I try
> > to
> > bind my Dependency Property to any other property I do not get it to work.
> > It
> > is probably some sort of namespace problem, but I have no idea how to
> > solve
> > it. Does anybody know?
> > I am using the Feb CTP
> >
> > Here is my composite control
> >
> > <Grid x:Class="TestBinding.MyTextBox"
> > xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
> > xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
> >
> > <TextBox Name="InternalTextBox" Text="Test"/>
> >
> > </Grid>
> >
> > namespace TestBinding
> > {
> > /// <summary>
> > /// Interaction logic for UserControl1.xaml
> > /// </summary>
> >
> > public partial class MyTextBox : Grid
> > {
> > public MyTextBox()
> > {
> > InitializeComponent();
> > }
> > public override void EndInit()
> > {
> > base.EndInit();
> > InternalTextBox.GotFocus += new
> > RoutedEventHandler(InternalTextBox_GotFocus);
> > }
> >
> > void InternalTextBox_GotFocus(object sender, RoutedEventArgs e)
> > {
> > int MyValue = this.MyInteger;
> > }
> >
> > public int MyInteger
> > {
> > get { return (int)GetValue(MyIntegerProperty); }
> > set { SetValue(MyIntegerProperty, value); }
> > }
> >
> > // Using a DependencyProperty as the backing store for MyInteger.
> > This enables animation, styling, binding, etc...
> > public static readonly DependencyProperty MyIntegerProperty =
> > DependencyProperty.Register("MyInteger", typeof(int),
> > typeof(MyTextBox), new UIPropertyMetadata(0));
> > }
> > }
> >
> >
> > and here is the actual bindin code in my Window. It is the local:MyTextBox
> > that I have problems with.
> >
> > <Window x:Class="TestBinding.Window1"
> > xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
> > xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
> > xmlns:local="clr-namespace:TestBinding"
> >
> > Title="TestBinding" Height="300" Width="300"
> > >
> > <Grid>
> > <Grid.ColumnDefinitions>
> > <ColumnDefinition />
> > <ColumnDefinition />
> > <ColumnDefinition />
> > </Grid.ColumnDefinitions>
> >
> > <TextBox Name="MinText" Grid.Column="0"
> > MaxLength="100">Test</TextBox>
> > <TextBox Grid.Column="1" Text="{Binding ElementName=MinText,
> > Path=MaxLength}"/>
> > <local:MyTextBox Grid.Column="2" x:Name="pelle" MyInteger="{Binding
> > ElementName=MinText, Path=MaxLength}" />
> > </Grid>
> > </Window>
> >
> >
> >
> >
> >
>
>
>