WPF DataGrid: Making the column type dynamic for every row

I have a WPF DataGrid. In one column I currently show a ComboBox with values of an enum. The code looks like this:

<DataGridTemplateColumn Header="Solution">
    <DataGridTemplateColumn.CellEditingTemplate>
        <DataTemplate>
             <ComboBox ItemsSource="{utils:Enumerate {x:Type EnumSolution}}" SelectedItem="{Binding Solution, Converter={StaticResource EnumToStringConverter}, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"/>
        </DataTemplate>
   </DataGridTemplateColumn.CellEditingTemplate>
   <DataGridTemplateColumn.CellTemplate>
        <DataTemplate>
             <ComboBox ItemsSource="{utils:Enumerate {x:Type EnumSolution}}" SelectedItem="{Binding Solution, Converter={StaticResource EnumToStringConverter}, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"/>
        </DataTemplate>
    </DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>

But I do not want to display the ComboBox for all rows. I only want to display it for specific rows and just a text for the other rows. Is that possible like this:

Solution

You can use CellTemplateSelector.

First create a class that represents your selector - the logic what template to choose when:

public class MyCellTemplateSelector : DataTemplateSelector
{
    public DataTemplate SolutionTextBlockTemplate { get; set; }
    public DataTemplate SolutionComboboxTemplate { get; set; }

    public override DataTemplate SelectTemplate(object item, DependencyObject container)
    {
        var diff = item as YourDatGridRowObjectType;
        if(diff != null)
        {
            if (<your condition on when to choose this template>))
                return SolutionTextBlockTemplate;
            return SolutionComboboxTemplate;
        }
        return null;
    }        
}

In the control that contains the DataGrid you define the resources for that - how the templates actually look like:

<Window.Resources>
    <DataTemplate x:Key="SolutionTextBlockTemplate">
        <TextBlock Text="{Binding Solution}" />
    </DataTemplate>
    <DataTemplate x:Key="SolutionComboBoxTemplate">
        <ComboBox ItemsSource="{utils:Enumerate {x:Type connectToEcomp:EnumSolution}}" SelectedItem="{Binding Solution, Converter={StaticResource EnumToStringConverter}, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"/>
    </DataTemplate> 
</Window.Resources>

In the DataGrid itself you use those templates like this:

<DataGridTemplateColumn Header="Solution" >
    <DataGridTemplateColumn.CellTemplateSelector>
        <local:MyCellTemplateSelector 
             SolutionTextBlockTemplate="{StaticResource SolutionTextBlockTemplate}" 
             SolutionComboboxTemplate="{StaticResource SolutionComboBoxTemplate}" />
    </DataGridTemplateColumn.CellTemplateSelector>  
</DataGridTemplateColumn>