尝试在 Clicked 事件后面的 Xamarin 代码中更改按钮的边框颜色

Question

This just doesn't seem to be working, but of course, I feel like it really should be. Can't figure out what's wrong here. I have a button with a border that's set to transparent in the xaml. I want the border color to change to white when the button is pressed. Very simple. But yeah, any help would be appreciated. Here's my event:

private void FactionChosen(object sender, EventArgs e)
    {
        if ((sender as Button).BorderColor == Color.Transparent)
        {
            (sender as Button).BorderColor = Color.White;
        }
        else if ((sender as Button).BorderColor == Color.White)
        {
            (sender as Button).BorderColor = Color.Transparent;
        }
    }

Thanks in advance

Answer 1

You should set a BorderWidth value.

<Button Text="Click Me" Clicked="FactionChosen" BorderColor="Transparent" BorderWidth="5" />

Answer 2

As mentioned previously in my comment , two possible reasons could be the cause:

1. You are not setting a value to BorderWidth , by default it has 0 as value

<Button Text="OK" BorderWidth="3" BorderColor="Transparent" Clicked="FactionChosen"/>

2. Your Button is in a white background (the BackgroundColor of it Parent is white), it is straightforward that the BackgroundColor of the Parent control and the BorderColor of your Button must be different.