WPF

Hello,

I have a DataGrid. Some of the column are delcared in Xaml and some are dynamic and declared in code. I have a collection of these columns but there is a code where i need to clear all DataGrid columns except the one delcared in code (this is done also using AttachedProperty - i have a collection of columns declared in code and i bind it to an attachedProperty, there i clear the DataGrid columns as i specified).

I want to create anothe Boolean attached Property which i will set in Xaml to true if i want to keep the column .

For this i need to keep a list of all Columns that this boolean attached property is true. How can i do it?

BTW, My Class which handles the AttachedProperties is Static

<Style x:Key="SelectionButton"
        TargetType="{x:Type Button}">

    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type Button}">

                <Grid HorizontalAlignment="Stretch"
                        VerticalAlignment="Stretch"
                        ClipToBounds="False">

                    <Border CornerRadius="7"
                            Opacity="50"
                            BorderBrush="MidnightBlue"
                            BorderThickness=".5"
                            Background="{StaticResource SelectionButtonBackground}"/>
                                
                    <ContentPresenter x:Name="ContentArea"
                                        VerticalAlignment="Center"
                                        Margin="{TemplateBinding Padding}"
                                        Content="{Binding Path=Content, RelativeSource={RelativeSource TemplatedParent}}" />
                </Grid>

            </ControlTemplate>
        </Setter.Value>

    </Setter>
            
</Style>

<Border CornerRadius="35,7,7,35">

    <Border.Background>
        <LinearGradientBrush StartPoint="0,0"
                                EndPoint="0,1">
            <LinearGradientBrush.GradientStops>
                <GradientStop Color="Goldenrod"
                                Offset="0" />
                <GradientStop Color="White"
                                Offset=".5" />
                <GradientStop Color="Gold"
                                Offset="1" />
            </LinearGradientBrush.GradientStops>
        </LinearGradientBrush>

    </Border.Background>
                                
    <Border.Effect>
        <DropShadowEffect Color="LightGray"
                            ShadowDepth="5"
                            RenderingBias="Quality"/>
    </Border.Effect>
                                
</Border>

Hello,

How do i use ResourceDictionary?

I created a xaml file with resourceDictionary with ImageSource

Than in my UserControl i must to mention a key for the resourceDictionary (otherwise it doesn't compile):

<ResourceDictionary x:Key="resourceDictionary">
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="/AQUA.ClientServices.Presentation;component/Images/ImageResources.xaml">
                </ResourceDictionary>
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
But when i am trying to use one of the resources in the dictionary it says the resource key can't be found

<Window x:Class="MyApp.Views.Window2"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="Window2" 
        Height="400" 
        Width="400">
    
    <Window.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="Resources\AppResources.xaml"/>
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </Window.Resources>
    
    <Grid>
    </Grid>
    
</Window>