在资源字典异常中找不到键-Xamarin.Forms

Question

I'm creating a Xamarin.Forms app. I'm unable to set the style from code behind. The following code is inside the constructor of my page.

Style greenButton = new Style(typeof(Button))
{
    Setters =
    {
        new Setter{Property = Button.BackgroundColorProperty, Value = Color.Green },
        new Setter{Property = Button.TextColorProperty, Value = Color.Red}
    }
};

Resources = new ResourceDictionary();
Resources.Add(greenButton);

Button createSL = new Button();
createSL.Text = "Create Stack Layout";
createSL.Style = (Style) Resources["greenButton"];

The above code gives this error message .

A Key not found Exception stating that 'greenButton' is not present in the dictionary.

But I've done everything as mentioned in the Xamarin.Forms documentation. Kindly help me fix it!

Answer 1

Your Resources.Add needs to include the text-based name of the style in order to retrieve it by name:

ie

Resources.Add ("greenButton", greenButton);