Retrieving value from static extension XAML
How do I retri开发者_运维百科eve the value (Int32.MaxValue) from the static extension:
<x:Static
x:Key="TooltipTimeout"
Member="s:Int32.MaxValue"
/>
...
<blablalba TooltipService.ShowDuration="{StaticResource TooltipTimeout}"/>
<-- this does not work by the way
Methinks you're doing something else wrong. Slap this in kaxaml:
<Page
xmlns:sys="clr-namespace:System;assembly=mscorlib"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<Page.Resources>
<x:Static x:Key="Derp" Member="sys:Int32.MaxValue"/>
</Page.Resources>
<Grid>
<TextBlock
ToolTipService.ShowDuration="{StaticResource Derp}"
ToolTip="Derp" Text="Herp" />
</Grid>
</Page>
Mod tested, mother approved.
If I had to guess, I think you're not defining your xml namespace for Int32 correctly.
In WPF, You can access static member directly, like this,
<TextBlock TooltipService.ShowDuration="{x:Static s:Int32.MaxValue}"/>
However, you cannot do the same in Silverlight, as it wouldn't work. In silveright, you've to write a wrapper class, like this,
public class StaticMemberAccess
{
public int Int32Max { get { return Int32.MaxValue; } }
//define other wrapper propeties here, to access static member of .Net or your classes
}
Then do this in XAML,
<UserControl.Resources>
<local:StaticMemberAccess x:Key="SMA"/>
</UserControl.Resources>
<TextBlock TooltipService.ShowDuration="{Binding Source={StaticResource SMA}, Path=Int32Max}"/>
.
Try to bind to your resource by setting it as the Source of your binding:
{Binding Source={StaticResource TooltipTimeout}}
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