Set the style of a custom button

Question

I created a custom button and would like to put a style on the button. I would like to put the style on the button at the class level so that I don't have to set the Style property on every button instance. Is there a way to do this? I have a Application Resource file that contains the styles for the button, just need to link the two up.

Button Class

public class CfcButton : Button
{
    public CfcButton()
    {
       //Set the Style here
    }
}

then when I have to put a button on the xaml page it will just be like so:

<controls:CfcButton Name="btnSearch" Margin="15,0,0,0"
                    Content="Search" Width="75" 
                    Command="{Binding SearchClick}" />

instead of setting the style on the button when it is created like so:

<controls:CfcButton Name="btnSearch" Margin="15,0,0,0"
                    Content="Search" Width="75"
                    Style="{DynamicResource CfcButtonStyle}"
                    Command="{Binding SearchClick}" />

Answer 1

You can set up the style in the constructor like this:

this.Style = (Style)Application.Current.Resources["CfcButtonStyle"];

and if your style resource doesn't have a key, but only a target type, then you can use typeof(CfcButton) as the resource key - but now I can see, that it has, so I updated the code...

Answer 2

Place the default style (without any x:Key set on it) under App resources and it will be automatically applied to all custom buttons in your application.

<Application>
  <Application.Resources>
     <Style xmlns:local="clr-namespace:YourNamespace"
            TargetType="local:CfcButton">
        ......
     </Style>
  </Application.Resources>
</Application>

Replace YourNamespace with actual namespace name where CfcButton class is declared in.