Question

I have a user-defined button, and it may have a Style property which I choose in properties window a value for it and depending on that value its Image and style will change.

How can I make this property to have some predefined and fixed values in a drop down list in properties window? and selecting a value causes running a method

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-details:

this button may gets specified appearance such pause and play styles. so I made a class for styles:

// style of the button; pause, play, reset, etc
public abstract class ButtonStyle
{
    public abstract Image GetImage();
}
// inherited classes of class ButtonStyle
public class PauseButtonStyle : ButtonStyle
{
    public override Image GetImage()
    {
        return CustomButtonLibrary.Properties.Resources.PauseButton;
    }
}
public class PlayButtonStyle : ButtonStyle
{
    public override Image GetImage()
    {
        return CustomButtonLibrary.Properties.Resources.PlayButton;
    }
}

And there is a method in the button for setting the specified style (pause,play,…):

public void SetStyle(ButtonStyle style)
{
    button1.Image = style.GetImage();                       
}

Now how can I have a property for this custom button in properties window that this property has some default values like pause, play,etc and selecting it causes changing the button’s style (with running SetStyle method)

Answer 1

I would make an enum and expose that as the Style property. Then, have a internal dictionary that keys off the enum value to choose the appropriate ButtonStyle object to pass to your SetStyle method.