<MultiBinding Converter="{StaticResource MergeValuesConverter}">
<Binding Path="StructureID" />
<Binding Path="SectionID" />
<Binding Path="ParentStructureID" />
</MultiBinding>
I am only getting the first two bindings.
Is there a way to get the third binding (ParentStructureID)?
Related
I want to bind a string value with string format.
I have tried many ways but it didn't work.
Could anybody help me to solve this problem?
This is the way I am currently using, but I still want to use StringFormat.
How could I do this ?
<DiscreteObjectKeyFrame.Value>
<MultiBinding Converter="{StaticResource DotConverter}">
<Binding Path="LoadingStringShow"/>
<Binding>
<Binding.Source>
<sys:Int16>1</sys:Int16>
</Binding.Source>
</Binding>
</MultiBinding>
</DiscreteObjectKeyFrame.Value>
The best way to format a string is to do this in code.
You could use string.Format() or for C#6's new Feature: "Interpolated Strings" as shown below to format your string.
private string _name;
public string Name
{
get {return $"My Name is {_name}";}
set
{
_name = value;
//OnPropertyChanged("Name");
}
}
Your Binding will then show: My Name is <valueofvariable>
Since your bindings name is LoadingStringShow I assume you want to display some kind of loading message.
Maybe this could also help:
<TextBlock Text="{Binding LoadingStringShow, StringFormat={}{0}%}" />
or
<TextBlock TextAlignment="Center">
<TextBlock.Text>
<MultiBinding StringFormat="{}{0} - {1}%">
<Binding Path="LoadingStringShow" />
<Binding Path="CurrentValue" />
</MultiBinding>
</TextBlock.Text>
Reference 1
Reference 2
I'm using xaml-Styler Plugin on VS2015. So far I didn't had any problems.
Now I have the problem, that the styler removes linebreaks (I use HTML encoded characters).
xaml (simplified)
<TextBlock>
<TextBlock.Text>
<MultiBinding StringFormat="{}{0}
Min X: {1:F3}; Max X: {2:F3}">
<Binding Path="Area.Name" ... />
<Binding Path="Area.MinX" ... />
<Binding Path="Area.MaxX" ... />
</MultiBinding>
</TextBlock.Text>
</TextBlock>
after Pressing Save, the xaml styler automatically makes this (html character is removed and LineBreak inserted:
<TextBlock>
<TextBlock.Text>
<MultiBinding StringFormat="{}{0}
Min X: {1:F3}; Max X: {2:F3}">
<Binding Path="Area.Name" ... />
<Binding Path="Area.MinX" ... />
<Binding Path="Area.MaxX" ... />
</MultiBinding>
</TextBlock.Text>
</TextBlock>
then the text is displayed at one line.
I'm not happy with using html encoded characters at all. Is there maybe a better (simple) way to format strings with linebreaks in a MultiBinding?
For this simple formatting I don't want to use a MultiValueConverter, because it is only an informative string...
If I could tell xaml styler don't style this part/line I would be happy, but didn't found the possibility or a property in options of xaml styler.
You can use the hex representation of the LineFeed character (char 10) :
to get a line break :
<TextBlock>
<TextBlock.Text>
<MultiBinding StringFormat="{}{0}
Min X: {1:F3}
Max X: {2:F3}">
<Binding Path="Area.Name" ... />
<Binding Path="Area.MinX" ... />
<Binding Path="Area.MaxX" ... />
</MultiBinding>
</TextBlock.Text>
</TextBlock>
Is it possible to pass the current DataContext as a parameter to a MultiBinding?
<Checkbox.IsEnabled>
<MultiBinding Converter={...}>
<Binding Path="SomeProperty" Mode="TwoWay"/>
<Binding Path="DataContext?" Mode="OneWay"/>
</MultiBinding>
<Checkbox.IsEnabled>
Just use . as Path.
<Binding Path="." Mode="OneWay"/>
Or ignore the Path property alltogether.
<Binding Mode="OneWay"/>
From the Binding.Path documentation:
Optionally, a period (.) path can be used to bind to the current source.
I have some RadioButton’s that I want to change the Visibility of based on multiple properties in the ViewModel. Each RadioButton’s Visibility will vary based on the same list of properties. I have the following xaml:
<RadioButton Command="{Binding Path=SomeCommand}"
CommandParameter="SomeCommandParameter"
Content="RB 1">
<RadioButton.Visibility>
<MultiBinding Converter="{StaticResource Rb1Visibility}">
<Binding Path="Value1"
RelativeSource="{RelativeSource Self}" />
<Binding Path="Value2"
RelativeSource="{RelativeSource Self}" />
</MultiBinding>
</RadioButton.Visibility>
</RadioButton>
I would like to change the Converter for each RadioButton option, but everything else would remain the same (all the Bindings). I don’t want to duplicate all the xaml code for this. I originally tried creating a style for the RadioButton, but I could not figure out how to pass the Converter to the Style resource:
<Style x:Key="RbVisibilityStyle"
TargetType="{x:Type RadioButton}">
<Setter Property="Visibility">
<Setter.Value>
<MultiBinding Converter="{???? Pass in converter ?????}">
<Binding Path="Value1"
RelativeSource="{RelativeSource Self}" />
<Binding Path="Value2"
RelativeSource="{RelativeSource Self}" />
</MultiBinding>
</Setter.Value>
</Setter>
</Style>
I could create a “Visibility” property for each RadioButton in the ViewModel, but that adds a lot of code to the ViewModel and addition PropertyChanged event handling.
Is there an easy way to generically bubble up the MultiBinding so I don’t duplicate the code throughout the entire xaml file? Is there a different approach I should be taking?
Update - Adding a more complex example
<RadioButton Command="{Binding Path=SomeCommand}"
CommandParameter="SomeCommandParameter"
Content="RB 1">
<RadioButton.Visibility>
<MultiBinding Converter="{StaticResource Rb1Visibility}">
<Binding Path="Value1"
RelativeSource="{RelativeSource Self}" />
<Binding Path="Value2"
RelativeSource="{RelativeSource Self}" />
</MultiBinding>
</RadioButton.Visibility>
</RadioButton>
<RadioButton Command="{Binding Path=SomeCommand2}"
CommandParameter="SomeCommandParameter2"
Content="RB 2">
<RadioButton.Visibility>
<MultiBinding Converter="{StaticResource Rb2Visibility}">
<Binding Path="Value1"
RelativeSource="{RelativeSource Self}" />
<Binding Path="Value2"
RelativeSource="{RelativeSource Self}" />
</MultiBinding>
</RadioButton.Visibility>
</RadioButton>
<RadioButton Command="{Binding Path=SomeCommand3}"
CommandParameter="SomeCommandParameter3"
Content="RB 3">
<RadioButton.Visibility>
<MultiBinding Converter="{StaticResource Rb3Visibility}">
<Binding Path="Value1"
RelativeSource="{RelativeSource Self}" />
<Binding Path="Value2"
RelativeSource="{RelativeSource Self}" />
</MultiBinding>
</RadioButton.Visibility>
</RadioButton>
How do I reduce the MultiBinding redundancy here?
would like to change the Converter for each RadioButton option,
Create a new MultiValueConverter which takes an extra parameter (the radio button option) and then simply route the call to the appropriate converter based on that option.
One can put the option in the Tag property on the control's Xaml.
Example
Its not clear to me what that option you mention is, so in my example let us uniquely identify each Radio Button by its Tag property and use the routing converter to find the appropriate converter based off of the Tag supplied.
<RadioButton Tag="1"/><RadioButton Tag="2"/>
Then change the style to use the new converter with the new parameter:
<Style x:Key="RbVisibilityStyle"
TargetType="{x:Type RadioButton}">
<Setter Property="Visibility">
<Setter.Value>
<MultiBinding Converter="{StaticResource RouterViaTagVisibilityConverter">
<Binding Path="Value1"
RelativeSource="{RelativeSource Self}" />
<Binding Path="Value2"
RelativeSource="{RelativeSource Self}" />
<Binding Path="Tag"
RelativeSource="{RelativeSource Self}" />
</MultiBinding>
</Setter.Value>
</Setter>
</Style>
I'm using dataTemplate. This is the template:
<ItemsControl ItemsSource="{Binding RAM.Partitions}">
<ItemsControl.ItemTemplate>
<DataTemplate>
<Grid>
<TextBlock Text="{Binding Position, StringFormat={}{0}k}"/>
<Grid Grid.Column="1">
<Border>
<Border.Height>
<MultiBinding Converter="{StaticResource MultiplyConverter}">
<Binding ElementName="LayoutRoot" Path="ActualHeight"/>
<Binding Path="Size" />
<Binding Path="RAM.Size" />
</MultiBinding>
</Border.Height>
</Border>
</Grid>
</Grid>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
Can you see this line?
<Binding Path="RAM.Size" />
That line throws me an exception, it should be because RAM.Size is from a parent element. How might I get that value?
Thanks in advance!
So you're trying to get to the RAM.Size value on the same object that your ItemsControl is getting its ItemsSource from?
See if this works:
<MultiBinding Converter="{StaticResource MultiplyConverter}">
<Binding ElementName="LayoutRoot" Path="ActualHeight"/>
<Binding Path="Size" />
<Binding Path="DataContext.RAM.Size"
RelativeSource="{RelativeSource Mode=FindAncestor,AncestorType=ItemsControl}" />
</MultiBinding>
So the binding is going up in through the visual tree to the ItemsControl, then binding to the Ram.Size property of its DataContext.