I have a simple Label in WPF as under:-
<Label Content="{Binding MyViewModel.SomeValue,Mode=OneWay,UpdateSourceTrigger=PropertyChanged}" />
I tried this but it didn't work:
<Label Canvas.Top="26" Canvas.Left="253" Content="{Binding "Hardcoded String"+CurrentRec.Current_Vendor_Purchase_Record.TaxName,Mode=OneWay,UpdateSourceTrigger=PropertyChanged}" />
and this:
<Label Canvas.Top="26" Canvas.Left="253" Content="Hard Coded String Value"+ "{Binding CurrentRec.Current_Vendor_Purchase_Record.TaxName,Mode=OneWay,UpdateSourceTrigger=PropertyChanged}" />
How can i concatenate some hard coded value to MyViewModel.SomeValue from XAML side?I mean i can always do it from code-behind,but just wanted to know how to add a hard coded value to a ViewModel property in XAML DataBinding?
I know it shouldn't be difficuilt,but plz discount me as a beginner :-).
You could use two different Run elements:
<Label Canvas.Top="26" Canvas.Left="253">
<Label.Content>
<TextBlock>
<Run Text="Hardcoded String" /><Run Text="{Binding CurrentRec.Current_Vendor_Purchase_Record.TaxName, Mode=OneWay}" />
</TextBlock>
</Label.Content>
</Label>
You don't event need to use a Label element:
<TextBlock Canvas.Top="26" Canvas.Left="253">
<Run>Hardcoded String</Run><Run Text="{Binding CurrentRec.Current_Vendor_Purchase_Record.TaxName, Mode=OneWay}" />
</TextBlock>
This will display the concatenated values in the view.
Related
I am trying to figure out a way to show the user the download progress like this:
17.38/50Mb's
But I need to bidnd through xaml with StringFormat
To use StringFormat in XAML,
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding DownloadSizeInMB, StringFormat={0:0.00}}" />
<TextBlock Text="/" />
<TextBlock Text="{Binding TotalSizeInMB, StringFormat={0:0.00}}" />
<TextBlock Text="Mb's" />
</StackPanel>
But these comes with some Margin between the TextBlocks.
I would suggest you use MultiBinding instead.
I need to concatenate two strings from string resources into a label.
I want something like this
<Label Content="{StaticResource Menu + " " + Name}"></Label>
How can I do that?
Any help is appreciated.
when Content is a string, framework creates a TextBlock behind the scenes to display it. So
<Label Content="Smth"/>
is transformed into
<Label>
<TextBlock Text="Smth"/>
</Label>
you can add TextBlock in xaml and explicitly assign two strings from Resources:
<Label>
<TextBlock>
<Run Text="{StaticResource Menu}"/>
<Run Text="{StaticResource Name}"/>
</TextBlock>
</Label>
I have a ComboBox whose ItemsSource is binding to a collection and the SelectedItem is binding to the properties of my VieModel. Let's call the binding properties AvailableOptions and TargetOption in ViewModel. And type of collection item and TargetOption is called MyOption. I have such requirements but I don't know how to fulfill them all:
It should be OK for the binding TargetOption to have NULL as value
I want to set a DataTemplate for the target type in TargetOption collection to be displayed in the ComboBox
If possible, I want use different DataTemplate for MyOption when then are in the drop-down of ComboBox and when one item is selected. Because my UserControl has limited space so it should be compact when item is selected and during the selection it should provide more information
As I said, I don't know how to do all of them. At first I have the XAML like this:
<ComboBox SelectedItem="{Binding SelectedOption} ItemsSource="{Binding AvailableOptions}" >
<ComboBox.ItemTemplateSelector>
<MyNameSpace:ComboBoxItemTemplateSelector ItemTemplate="{StaticResource OptionDetailTemplate}" SelectedItemTemplate="{StaticResource OptionSimpleTemplate}" />
</ComboBox.ItemTemplateSelector>
</ComboBox>
With a customized ItemTemplateSelector. I am able to do the requirement 2) and 3). My OptionDetailTemplate looks like this:
<DataTemplate x:Key="OptionDetailTemplate">
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding ShortName}" />
<TextBlock Text=" | " />
<TextBlock Text="{Binding Code}" />
</StackPanel>
</DataTemplate>
and OptionSimpleTemplate looks like this:
<DataTemplate x:Key="OptionSimpleTemplate">
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding ShortName}" />
<TextBlock Text=" | " />
<TextBlock Text="{Binding Code}" />
<TextBlock Text=" | " />
<TextBlock Text="{Binding Number}" />
</StackPanel>
</DataTemplate>
But now the problem is requirement 1). When the user select one option from the drop down list of the ComboBox, he can't put it as NULL back which should be allowed. This is because AvailableOption doesn't have a NULL object
I see that if I set IsEditable to True for the ComboBox, and set TextSearch.TextPath to Code, it allows the text quick search/assign and also allows to have a NULL value when the search text is totally deleted. But now when I ever select one, it only displays Code (the OptionTemplate does not have any effect any more because now it displays the selected item in a TextBox). This is not good since only Code is not enough for the user to tell what Option it is. But since I have multiple properties in MyOption class, how can I define the DataTemplate for the TextBox and also define the search routine?
I have to be honest that I didn't fully understand your first requirement and its ramifications. however, I am really just answering to let you know that you don't even need to use a DataTemplateSelector to select between your two DataTemplates. If you do not set the x:Key value on them, then they will be applied to the relevant items implicitly:
<DataTemplate DataType="{x:Type YourXamlNamespacePrefix:TargetOption}">
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding ShortName}" />
<TextBlock Text=" | " />
<TextBlock Text="{Binding Code}" />
</StackPanel>
</DataTemplate>
...
<DataTemplate DataType="{x:Type YourXamlNamespacePrefix:MyOption}">
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding ShortName}" />
<TextBlock Text=" | " />
<TextBlock Text="{Binding Code}" />
<TextBlock Text=" | " />
<TextBlock Text="{Binding Number}" />
</StackPanel>
</DataTemplate>
Furthermore, you could do all this data binding with just a single TextBlock if you use a MultiDataTrigger:
<TextBlock>
<TextBlock.Text>
<MultiBinding StringFormat="{}{0}|{1}">
<Binding Path="ShortName" />
<Binding Path="Code" />
</MultiBinding>
</TextBlock.Text>
</TextBlock>
Perhaps if you try clarifying your remaining problem (in your question), I might understand?
I have a AutoCompleteBox bound to the datasource. DataSource contains two string
properties. I have defined ItemTemplate for AutoCompleteBox.
I want second property to come closed in brackets e.g. Property1 Data (Property2 Data)
I will have to define StringFormat during Binding.
I am totally unaware of format. Can anyone tell me the format.
Thanks.
here is examples.
A simple way to use StringFormat in the binding.
Output: (0)
<TextBlock Text="{Binding Videos.Count, StringFormat='({0})', FallbackValue='(0)'}" />
Using <Run> tags you can also build complex values.
Output: Distance: 200km
<TextBlock>
<Run Text="Distance: " />
<Run Text="{Binding VideoDistance, StringFormat='\{0:G\}'}" />
</TextBlock>
If you use the second example, you must just add another <Run> tag for the next value.
You can also use a horizontal StackPanel to show multiple values.
Output: Start Distance: 200km
<!--START DISTANCE MIN-->
<StackPanel Orientation="Horizontal">
<TextBlock Text="Start Distance:" />
<TextBox Text="{Binding StartDistanceMinStr, Mode=OneWay}" IsReadOnly="True" />
</StackPanel>
In WPF, is there any way to have the Text property of a TextBlock to contain both hard coded text and a specific binding?
What I have in mind is something along the lines of the following (ofcourse, the below doesn't compile):
<TextBlock Text="Number of Fans: {Binding Artist.Fans.Count}"></TextBlock>
There is, if you are on .Net 3.5 SP1
<TextBlock Text="{Binding Path=Artist.Fans.Count,
StringFormat='Number of Fans: {0}'}" />
In using the above approach:
<TextBlock Text="{Binding Path="Artist.Fans.Count,
StringFormat='Number of Fans: {0}'}" />
I found it somewhat restrictive in that I couldn't find a way to bold face inside the StringFormat nor could I use an apostrophe in the StringFormat.
Instead I went with this approach, which worked better for me:
<TextBlock TextWrapping="Wrap">
<Run>The value</Run>
<Run Text="{Binding Path=MyProperty1, Mode=OneWay}" FontWeight="Bold" />
<Run>was invalid. Please enter it with the format... </Run>
<LineBreak/><LineBreak/>
<Run>Here is another value in the program</Run>
<Run Text="{Binding Path=MyProperty2, Mode=OneWay}" FontWeight="Bold" />
</TextBlock>
Use Binding.StringFormat:
<TextBlock Text="{Binding Artist.Fans.Count, StringFormat='Number of Fans: {0}'}"/>
Here the binding value(clouds.all) is added with "%". You can add any value you want after "\{0\}".
<TextBlock Text="{Binding Path=clouds.all, StringFormat=\{0\}%}"/>
With XAML using Template 10 and MVVM:
Just to be clear:
By definition, binding binds values to properties of controls.
Under the MVVM paradigm as implemented in the 'Template 10' framework, the values are initialized in the ViewModel associated to the relevant XAML page.
Here is how to have hardcoded text together with a binding in a Text property:
<Page
...
xmlns:vm="using:doubleirish.ViewModels"
xmlns:sys="using:System"
xmlns:controls="using:Template10.Controls"
...
<Page.DataContext>
<vm:StocksViewModel x:Name="ViewModel" />
</Page.DataContext>
...
<controls:PageHeader ... Text="{x:Bind sys:String.Format('Ticker : {0}', ViewModel.Ticker)}">
...
</Page>
The solution that worked for me:
<Label Content="{Binding Artist.Fans.Count}" ContentStringFormat="Number of {0}"/>