Comments by bscaer - CodeProject

bscaer 27-Mar-12 10:08am View

Thanks very much. That is exactly what I had already implemented. Sorry that I didn't mention it. I was hoping for a clean, MVVM method that didn't involve having to touch two properties to get one value.

bscaer 26-Mar-12 18:43pm View

"<pre> The XAML:

"open bracket" controls:MyControl
MyProperty="{Binding MyProperty, Mode=TwoWay}" "close bracket"

MyControl class:

public static readonly DependencyProperty MyPropertyProperty =
DependencyProperty.Register("MyProperty",
typeof(byte[]),
typeof(MyControl),
new PropertyMetadata(null)
);

ViewModel property:

byte [] MyProperty {get;set;}

Code on ViewModel that is run when the MenuItem is clicked:

public void MyMenuItemFunction()
{
// Get the up-to-date value of MyProperty from MyControl here
}</pre>

bscaer 26-Mar-12 18:42pm View

Deleted

<pre> The XAML:

<controls:mycontrol
="" myproperty="{Binding MyProperty, Mode=TwoWay}">

MyControl class:

public static readonly DependencyProperty MyPropertyProperty =
DependencyProperty.Register("MyProperty",
typeof(byte[]),
typeof(MyControl),
new PropertyMetadata(null)
);

ViewModel property:

byte [] MyProperty {get;set;}

Code on ViewModel that is run when the MenuItem is clicked:

public void MyMenuItemFunction()
{
// Get the up-to-date value of MyProperty from MyControl here
}</pre>

bscaer 26-Mar-12 18:41pm View

Deleted

The XAML:

<controls:mycontrol
="" myproperty="{Binding MyProperty, Mode=TwoWay}">

MyControl class:

public static readonly DependencyProperty MyPropertyProperty =
DependencyProperty.Register("MyProperty",
typeof(byte[]),
typeof(MyControl),
new PropertyMetadata(null)
);

ViewModel property:

byte [] MyProperty {get;set;}

Code on ViewModel that is run when the MenuItem is clicked:

public void MyMenuItemFunction()
{
// Get the up-to-date value of MyProperty from MyControl here
}

bscaer 26-Mar-12 18:13pm View

Thanks. The problem is that the click is not on the control. The click is on a menu item.

bscaer 26-Mar-12 17:01pm View

Thanks. That is all correct. My question is how to do I tell the control to update its property?

bscaer 26-Mar-12 16:54pm View

When the menu item is clicked, I need to tell the control to calculate a value and pass it back to the ViewModel. How to tell the control to calculate the value at that point in time?

bscaer 26-Mar-12 16:14pm View

I have a dependency property on a control in my View that is bound to a field on my ViewModel. I want the ViewModel to tell the View to update the value for the property.

bscaer 26-Mar-12 16:14pm View

Deleted

I have a dependency property on a control in my View that is bound to a field on my ViewModel.

bscaer 26-Mar-12 16:13pm View

Deleted

I have a dependency property on a control in my View that is bound to a field on my ViewModel. I want the ViewModel to tell the View to update the value for the property.

bscaer 26-Mar-12 16:08pm View

Thanks. I do have a menu command bound to the ViewModel but when that command is executed how does the ViewModel tell the control to update the value of its property?

Comments by bscaer (Top 11 by date)