Binding value with conditional - wpf

Question

I'm binding a value to my DataGrid in WPF, and I would like to know how can I do something like this.
I have a int field (Category) into my model, and I would like to show a description string in my DataGrid.
Example:
The 'Category' field have this values 1,2,3,4,5 and each value has a description, how can I show the description and not the code in datagrid binding?
I've tried to create a method in my ViewModel and this method will return the string description.
//ViewModel
public string GetDescription(int pCategory)
{
if(pCategory == 1)
return "01. Description";
else if(pCategory == 2)
return "02. Description";
else if(pCategory == 3)
return "03. Description";
else
return "None";
}
//XAML DataGrid binding code
<DataGridTextColumn IsReadOnly="True" Header="Category" Binding="{Binding GetDescription(Category)}"/>

Answer 1

In the view use a DataGridTemplateColumn and add data triggers, something like this
<DataGridTemplateColumn>
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<TextBox>
<TextBox.Style>
<Style TargetType="TextBox">
<Setter Property="Text" Value="None"/>
<Style.Triggers>
<DataTrigger Binding="{Binding pCategory}" Value="1">
<Setter Property="Text" Value="01. Description"/>
</DataTrigger>
<DataTrigger Binding="{Binding pCategory}" Value="2">
<Setter Property="Text" Value="02. Description"/>
</DataTrigger>
<DataTrigger Binding="{Binding pCategory}" Value="3">
<Setter Property="Text" Value="03. Description"/>
</DataTrigger>
</Style.Triggers>
</Style>
</TextBox.Style>
</TextBox>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>