how to add DataTemplate to .Xaml file dynamically

Question

I  am using T4 template to generate datatemplate. 

My datatemplate file already contains the following root element:

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">

</ResourceDictionary>

Now I am generating following xaml from my T4 template.

<DataTemplate x:Key="PersonItemDetailTemplate" >
<Grid HorizontalAlignment="Left" VerticalAlignment="Top" Width="470" Height="470" Margin="110,30,0,0" >
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="Auto" />
                <ColumnDefinition Width="*" />
            </Grid.ColumnDefinitions>
<Image Source="{Binding ImageUrl}"  Width="150" Height="150" Margin="0,0,10,0" VerticalAlignment="Top"/>
</Grid>
</DataTemplate>

how can I add this datatemplate to my file? 

I tried using XMLDocument but while parsing it throws error that "x: is undefined"..

And I dont want to add the xmlns along with my datatemplate because then it does not work when we see view in design mode... any suggestions?

 

Answer 1

Hi Pratik,

Take a look at the XamlReader class to dynamically load a Xaml file. If you are generating this at runtime you might also consider creating the DataTemplate from code rather than writing Xaml and then parsing it.

--Rob

Answer 2

Hi Rob,

Thanks for the reply. but Xamlreader also throws error when we dont include namespace.. 

Answer 3

You could use a ParserContext:

 System.Windows.Markup.ParserContext parserContext = new System.Windows.Markup.ParserContext();
 parserContext.XmlnsDictionary.Add("", "http://schemas.microsoft.com/winfx/2006/xaml/presentation");
 parserContext.XmlnsDictionary.Add("x", "http://schemas.microsoft.com/winfx/2006/xaml");

 System.IO.FileStream stream = new System.IO.FileStream(@"C:\XMLFile1.xml",
                System.IO.FileMode.Open);
 DataTemplate dt = System.Windows.Markup.XamlReader.Load(stream, parserContext) as DataTemplate;

XMLFile1.xml:

<DataTemplate x:Key="PersonItemDetailTemplate" >
  <Grid HorizontalAlignment="Left" VerticalAlignment="Top" Width="470" Height="470" Margin="110,30,0,0" >
    <Grid.ColumnDefinitions>
      <ColumnDefinition Width="Auto" />
      <ColumnDefinition Width="*" />
    </Grid.ColumnDefinitions>
    <Image Source="{Binding ImageUrl}"  Width="150" Height="150" Margin="0,0,10,0" VerticalAlignment="Top"/>
  </Grid>
</DataTemplate>