I have a view that Filters a DataGrid and I want to use the the exact same filtering with the same collection (apart from the columns will be different) in a different view.
Of course I dont want to duplicate the XAML in this new view, so is this when a user control would be the correct thing to do?
My only problem is that a new DataGrid will be put underneath in the new view so would this be possible? And as I said above, the columns also may be different in the filtering, so again, possible within a user control?
Thanks
A UserControl should be used when wanting to create a new kind of control for your UI, or derive an existing control and enhance its capabilities.
What you need sounds like a Style, where you want to set certian properties of your control to certian values:
<Style TargetType="Button">
<Setter Property="Background" Value="Red"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Button">
<Grid>
<Rectangle Fill="{TemplateBinding Background"/>
<ContentPresenter/>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
Related
I made a custom resource dictionary style for a TreeViewItem, but I am having difficulties with it.
<Style x:Key="StageTreeViewItem" TargetType="{x:Type TreeViewItem}" BasedOn="{StaticResource {x:Type TreeViewItem}}">
<Setter Property="Foreground" Value="Gold"/>
<Setter Property="FontFamily" Value="ArialN"/>
<Setter Property="FontSize" Value="20"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="TreeViewItem">
<Grid>
<Image Name="PrimaryButtonImage" Source="pack://application:,,,/Images/TreeViewItem/TreeViewItem_Normal.png"/>
<ContentPresenter VerticalAlignment="Center" HorizontalAlignment="Center"/>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
The content/header of the TreeViewItem does not exist. I put "Stage One" as Header of the TreeViewItem, but it doesn't show up. Also, if I add multiple tree view items on another, it does not expand at all.
Another thing:
How can I remove the highlights when I select the tree view item? I want it to be transparent even when I hover over it and even when I click it. I don't want anything to happen, but I just don't know how, I tried everything.
Your provided code is not making it clear how you're setting header of TreeViewItem.
For other part of the question, you can use Triggers for events happening in WPF forms. Also have a look at this link, as you'll have to define a template for changing background color on mouse hover.
IsMouseOver Trigger not working in WPF
In our project we have a LookUp Base ViewModel which has a Required-Attribute on the SelectedItem property. I have another View that uses one of the child LookUps, which should ignore the Required-attribute. I've already overridden the IsValid method in the ViewModel, so saving without caring about the Required works correctly, but unfortunately it's still showing the validation error on the view when I empty the LookUp:
I had a couple of possibilities:
Split the LookUpBaseViewModel into two childs that are also "BaseViewModels", one with the RequiredAttribute and one without. This works, but it seems like a bit too much work and a lot of extra classes for just a single view that doesn't need to show the validation errors on the View.
Replace the RequiredAttribute with a RequiredIf-Attribute and add a boolean IsRequired parameter to the Constructor. This doesn't work since we use AutoFac in our project, so we can't use a boolean parameter for the ILookUpBaseViewModel-interface implementation.
Add a style to the LookUp-ContentControl in the View to hide the ValidationError border & text. This seemed like the easiest solution on paper, and it also makes sense to just hide the unwanted ValidationError border & text.
So, my question, how do I make the style to hide the default WPF validation error (so the red border and the text behind it)? I'm a novice when it comes to styles, but this is what I've tried (and which doesn't do anything it seems):
<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<Style x:Key="HideValidationErrorContentControlStyle" TargetType="{x:Type ContentControl}" BasedOn="{StaticResource {x:Type ContentControl}}">
<Setter Property="Validation.ErrorTemplate">
<Setter.Value>
<ControlTemplate>
<!-- Empty -->
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<Trigger Property="Validation.HasError" Value="True">
<Setter Property="Validation.ErrorTemplate">
<Setter.Value>
<ControlTemplate>
<!-- Empty -->
</ControlTemplate>
</Setter.Value>
</Setter>
</Trigger>
</Style.Triggers>
</Style>
</ResourceDictionary>
With the style on my LookUp-ContentControl like this:
<ContentControl x:Name="MyLookup" Style="{StaticResource HideValidationErrorContentControlStyle}"/>
This is the result I want (even when a ValidationError would normally be shown):
Maybe it isn't your LookUp-ContentControl the one showing the error, but another control inside it. A TextBox, maybe?
Also, instead of leaving the ErrorTemplate empty, try to add an AdornedElementPlaceholder.
<Style x:Key="HideValidationErrorContentControlStyle" TargetType="{x:Type ContentControl}" BasedOn="{StaticResource {x:Type ContentControl}}">
<Setter Property="Validation.ErrorTemplate">
<Setter.Value>
<ControlTemplate>
<AdornedElementPlaceholder />
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
It's likely this isn't needed, but better be safe than sorry.
I've got a custom control in WPF, which has a variety of dependency properties that allow visual customization. For the sake of brevity I won't post the entire control, but it basically is setup like this:
<UserControl.Resources>
<Style TargetType="{x:Type MyControl}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type MyControl}">
<Border BorderBrush="{TemplateBinding BorderColor}">
// more stuff here
<ContentPresenter/>
</Border>
</ControlTemplate>
</Setter>
</Setter>
</Style>
</UserControl.Resources>
The BorderColor property works fine if I set it directly, like this:
<ctl:MyControl BorderColor="Brushes.Red">....</ctl:MyControl>
But I want to set it application-wide. The problem I have is if I simply set the style with no key, it does not apply. Like this:
<Window.Resources>
<Style TargetType="{x:Type ctl:MyControl}">
<Setter Property="BorderColor" Value="Brushes.Red"/>
</Style>
</Window.Resources>
This does not do anything to the control. So I thought I'd just set a key and apply that style, like this:
<Style TargetType="{x:type ctl:MyControl}" x:Key="myStyle">....</Style>
<ctl:MyControl Style="{StaticResource myStyle}">.....</ctl:MyControl>
But this causes the control to vanish, I'm assuming because it's removing the Template. What am I doing wrong? With other framework controls you can just set the properties you want without losing the control template.
You need to inherit from the default style you have created.
inherit style from default style
is there any way to override the default style of the radiobuttons, if it is placed in a menu?
but if it is in the window, it should look like ever. but i will not use x:key. it should found this automatically.
I see two solutions:
Create style with x:Key but place it in Menu.Resources - that way it will be only applied to menu items.
ItemsControls (Menu is one) have property called ItemContainerStyleSelector. You can create Your own StyleSelector and set style depending on container type.
it is very easy, if you know how :)
<style TargetType="{x:Type Menu}">
<Setter Property="Template>
<Setter.Value>
<ControlTemplate TargetType="{x:Type Menu}">
<ControlTemplate.Resources>
<Style Targettype="{x:Type Radiobutton}>
</Style>
</ControlTemplate>
<StackPanel IsItemsHost="True" Width="{TemplateBinding Width}" Height= {TemplateBinding Height} />
</Setter.Value>
</Setter>
</style>
you have to control the writing of the keywords, because i write it so and not on Visual Studio.
override the menu standard with a stackpanel, because i had found no other way to set the Resources.
It is easy, but without the answer from Varius, i didn't found this.
You have to do the same for MenuItem.
I post this, because i think, it maybe would help other peoples with the same problem.
i had searched long time and find nothing.
I have a bunch of Buttons in my application which look almost the same. The only difference between them is the path data that they use.
This is the style I have for the "minimize button" of my application:
<Style x:Key="MinimizeButton" TargetType="{x:Type Button}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<!-- The border is here to make the entire "block" clickable.
Without it, only the actual path is clickable. -->
<Border Background="Transparent">
<Path Name="ThePath" Data="{StaticResource MinimizeIconPath}" Style="{StaticResource WindowButtonPath}"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
As you can see, I'm basically just changing the control template to use a path instead of the default button stuff. But this declaration is only for the minimize button – I have a few other buttons, such as "maximize", "restore" and "close" to deal with now. The problem is that the styles for those buttons will be identical, with the only difference being the Data attribute of their Paths.
What would you recommend me to do to use as little code as possible?
User control?
http://www.codeguru.com/cpp/data/data-misc/xml/article.php/c12521/
http://www.codeproject.com/KB/WPF/XSButton.aspx