Winform TextBox 鼠标点击全选内容

//实现mouseClick 调用textbox控件的selectAll方法即可。

 public partial class TextBox : SkinTextBox
    {
        public TextBox()
        {
            InitializeComponent();
            base.SkinTxt.KeyPress += SkinTxt_KeyPress;
            base.SkinTxt.MouseClick += SkinTxt_MouseClick;
        }

    private void SkinTxt_MouseClick(object sender, MouseEventArgs e)
    {
        this.SkinTxt.SelectAll();
    }

    private void SkinTxt_KeyPress(object sender, KeyPressEventArgs e)
        {
            //取消登登登
            if (e.KeyChar == Convert.ToChar(13))
            {
                e.Handled = true;
            }
        } 
    }