Implicit Styles for Custom Controls

MarcoTambalo

I have already tried this:

<Style TargetType="{x:Type local:CustomControl}"> <Setter Property="Padding" Value="20,40,20,0" /> </Style>

But it does not work. Is there something I missed?

MarcoTambalo

When using this syntax:

<Style TargetType="{local:CustomControl}"> <Setter Property="Padding" Value="20,40,20,0" /> </Style>

It seems to instantiate the custom control because the constructor is invoked, but throw an InvalidCastException.
Any ideas?

StacyMahnke.2763

I know this is an older thread, but in case you haven't found the answer.

First reference the namespace properly in the Application root (IE: xmlns:ctrls="clr-namespace:ProjectName.Folder")

Then use the below:

       <Style TargetType="ctrls:CustomControlName">
          <Setter Property="TextColor" Value="Black" />
      </Style>

RicardoMedina

Hi Stacy,

I have the same issue and tried your solution:

``
<Application.Resources>

    <ResourceDictionary>
        <!-- Pallete -->
        <Color x:Key="nav-title-bg_color">#26506b</Color>
        <Color x:Key="nav-title_color">#ffffff</Color>
        <Color x:Key="topmenu-name_color">#81d7ed</Color>
        <Color x:Key="topmenu-account_color">#5fb1c6</Color>

        <!-- Styles -->
        <Style x:Key="SideMenuNameIcon" TargetType="ctrls:FontAwesomeLabel">
            <Setter Property="Margin" Value="10,10,10,35" />
            <Setter Property=" HorizontalOptions" Value="Start" />
            <Setter Property="VerticalOptions" Value="End" />
            <Setter Property="FontSize" Value="15" />
            <Setter Property="TextColor" Value="{StaticResource topmenu-name_color}" />
        </Style>``

The Control:

`namespace AAAApp.UserControls
{
public class FontAwesomeLabel : Label
{
public static readonly string FontAwesomeName = "FontAwesome";

    //Parameterless constructor for XAML
    public FontAwesomeLabel()
    {
        FontFamily = FontAwesomeName;
    }

    public FontAwesomeLabel(string fontAwesomeLabel = null)
    {
        FontFamily = FontAwesomeName;
        Text = fontAwesomeLabel;
    }
}

// https://github.com/neilkennedy/FontAwesome.Xamarin/blob/master/FontAwesome.Xamarin/FontAwesome.cs
// For a huge list of icon codes
public static class Icon
{
    public static readonly string FAGlass = "\uf000";
    public static readonly string FAMusic = "\uf001";`

But is still breaks. Any Suggestions?

SagarPanwala

@RicardoMedina : Did you find solution to this ? I'm also facing the same issue.

RicardoMedina

Sorry Sagar, I know I did, but don't remember how. Haven't done a mobile app on xamarin for a while. But this may help: https://stackoverflow.com/questions/46182833/xamarin-form-utilizing-resourcedictionary-style-with-custom-usercontrol