C#透明按钮

完全透明的按钮，只在鼠标经过时显示边框线。
属性Button.Image设置图片按钮，可与背景完美结合。

/// <summary>

/// 设置透明按钮样式

/// </summary>

private void SetBtnStyle(Button btn)

{

    btn.FlatStyle = FlatStyle.Flat;//样式

    btn.ForeColor = Color.Transparent;//前景

    btn.BackColor = Color.Transparent;//去背景

    btn.FlatAppearance.BorderSize = 0;//去边线

    btn.FlatAppearance.MouseOverBackColor = Color.Transparent;//鼠标经过

    btn.FlatAppearance.MouseDownBackColor = Color.Transparent;//鼠标按下

}

private void btn_MouseHover(object sender, EventArgs e)

{

    Button btn = sender as Button;

    btn.FlatAppearance.BorderSize = 1;

}



private void btn_MouseLeave(object sender, EventArgs e)

{

    Button btn = sender as Button;

    btn.FlatAppearance.BorderSize = 0;

}

url:http://greatverve.cnblogs.com/archive/2012/03/13/Transparent-button.html