CODEWITHSUNDEEP
wpfdatagridbindingstyleswpftoolkit
Tokk
Tokk

Reputation: 4502

How to create a standard DataTemplate for DataGridTemplateColumn?

I've got a DataTemplate for a DataGridTemplateColum wich looks like this:

                <toolkit:DataGridTemplateColumn  x:Name="DataGridTextColumnIstVorvorjahr"  IsReadOnly="True" SortMemberPath="SummeIstVorvorjahr">
                <toolkit:DataGridTemplateColumn.CellTemplate >
                    <DataTemplate>
                        <Grid HorizontalAlignment="Stretch" Background="Transparent" Margin="0,-5">
                            <DockPanel VerticalAlignment="Stretch" HorizontalAlignment="Stretch">
                                <TextBlock Panel.ZIndex="100" Style="{DynamicResource CellText}" Text="{Binding Path=SummeIstVorvorjahrGerundet, Converter={StaticResource numberFormatter}, ConverterParameter='#,0.0 T€'}"  DockPanel.Dock="Right"/>
                                <Image Panel.ZIndex="90" DockPanel.Dock="Left" MouseLeftButtonUp="FilterDataGridAnalyse_MouseDoubleClick" HorizontalAlignment="Left" Margin="5,0,0,0" Width="20" Height="20" Visibility="Hidden" Name="ImageNormal"  Source="pack://application:,,,/Cis.Common.Presentation;component/Resources/Images/Lupe.png" />
                            </DockPanel>
                        </Grid>
                        <DataTemplate.Triggers>
                            <Trigger Property="IsMouseOver" Value="true">
                                <Setter TargetName="ImageNormal" Property="Visibility" Value="Visible" />
                            </Trigger>
                        </DataTemplate.Triggers>
                    </DataTemplate>
                </toolkit:DataGridTemplateColumn.CellTemplate>
                <toolkit:DataGridTemplateColumn.HeaderTemplate>
                    <DataTemplate >
                        <DockPanel VerticalAlignment="Stretch" HorizontalAlignment="Stretch" LastChildFill="False">

                            <TextBlock x:Name="TextBlockHeaderZeile1" Text="Ist" DockPanel.Dock="Top" />
                            <WrapPanel DockPanel.Dock="Top">
                                <TextBlock x:Name="TextBlockHeaderZeile2" Text=""/>
                                <ContentPresenter x:Name="contentPresenter">
                                    <ContentPresenter.Content>
                                        <Binding RelativeSource="{RelativeSource TemplatedParent}" Path="Content" />
                                    </ContentPresenter.Content>
                                </ContentPresenter>
                            </WrapPanel>
                            <Border Style="{DynamicResource borderline}">
                                <TextBlock VerticalAlignment="Stretch" x:Name="TextBlockSumme" Text="{Binding Path=KumulierteSummeIstVorvorjahr, Converter={StaticResource numberFormatter}, ConverterParameter='#,0.0 T€',  RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type cis:ChildWindow}}}"
                                       />
                            </Border>
                        </DockPanel>
                    </DataTemplate>
                </toolkit:DataGridTemplateColumn.HeaderTemplate>
            </toolkit:DataGridTemplateColumn>

Now I want to make a StandartTemplate for this Type because I've got many Colums like this, with only differ in the bindings of the texts in the colums as well as in their headers.

As far I've tried to make a Style for this, but this won't work, I tried to create an usercontrol (but I think it's like taking a sledgehammer to crack a nut).

So any help or hint how to solve this problem would be appreciated.

Upvotes: 0

Views: 3337

Answers (3)

user808128
user808128

Reputation: 521

If I understand you, you try to bind the same column template with different data and to have different header's content relative with column data. So, you may use "dynamic XAML" (XAML used in C# code - that is dynamic) which allows you to use one template for different data.

Here a simple example.

In C# code we create DataGridTemplateColumn object:

DataGridTemplateColumn tc = new DataGridTemplateColumn();

Then we set the CellTemplate property with template which is created dynamically in special function:

tc.CellTemplate = (DataTemplate)XamlReader.Parse(GetTextCellDataTemplate(someText));

Here is a special function which creates our template:

public static string GetTextCellDataTemplate(string bindingPath)
        {
            return @"                
                <DataTemplate
                xmlns=""http://schemas.microsoft.com/winfx/2006/xaml/presentation""
                xmlns:x=""http://schemas.microsoft.com/winfx/2006/xaml"" >
                    <ScrollViewer MaxHeight=""200"" MaxWidth=""250"" VerticalScrollBarVisibility=""Auto"">
                        <TextBlock Text=""{Binding Path=" + bindingPath + @"}""
                                   TextWrapping=""Wrap"" />
                    </ScrollViewer>
                </DataTemplate>";
        }

Now you may send various information in this function as text and get the same template. You may choose the template from the information you want to put in the cell. For this you must write various function which will return various templates.

The same approach can be applied to header template.

Upvotes: 0

Ian Griffiths
Ian Griffiths

Reputation: 14547

I don't see why you've rejected the UserControl approach. UserControls are pretty lightweight. They add very little overhead at runtime. They are an extra feature in your project of course, but I usually find that to be an improvement - WPF projects with a small number of large Xaml files are typically hard to maintain.

Far from being a 'sledgehammer', they seem like exactly the right solution here to me.

Upvotes: 1

Rachel
Rachel

Reputation: 132568

Add the DataTemplate into the Resources and then access it via a StaticResource

<Window>
    <Window.Resources>
        <DataTemplate x:Key="MyColumnTemplate">
            ...
        </DataTemplate>
        <DataTemplate x:Key="MyColumnTemplateHeader">
            ...
        </DataTemplate>
    </Window.Resources>

    ...

    <toolkit:DataGridTemplateColumn x:Name="DataGridTextColumnIstVorvorjahr"  IsReadOnly="True" SortMemberPath="SummeIstVorvorjahr"
        CellTemplate={StaticResource MyColumnTemplate}
        HeaderTemplate={StaticResource MyColumnTemplateHeader}

    ...
</Window>

Upvotes: 1

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