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MethodInfo mi = owner.GetType().GetMethod("SetStyle", BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.InvokeMethod);
mi.Invoke(owner, BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.InvokeMethod, null, new object[] {
ControlStyles.Selectable,
false
}, null);
把owner替换成你的按钮
//鼠标移入button空间内事件 修改边框
private void button1_MouseEnter(object sender, EventArgs e)
{
button1.FlatAppearance.BorderColor = Color.Red;
}
//鼠标移出button空间内事件 修改边框
private void button1_MouseLeave(object sender, EventArgs e)
{
button1.FlatAppearance.BorderColor = Color.Black;
}