winform 重写TextBox的OnEnter方法（事件）OnLeave方法（事件）实现获得焦点、失去焦点变色

实现效果

参考代码：

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace TextBoxColor
{
    public class TextBoxColor: TextBox
    {
        public Color XuanColor { get; set; } = Color.Red;
        public Color FeiXuanClolor { get; set; } = Color.Green; 
        
        public TextBoxColor()
        {
            
            this.BackColor = this.FeiXuanClolor;
        }

        protected override void OnEnter(EventArgs e)
        {
            
            this.BackColor = this.XuanColor;
            base.OnEnter(e);
            //this.BackColor = this.XuanColor;
        }
        protected override void OnLeave(EventArgs e)
        {
            
            this.BackColor = this.FeiXuanClolor;
            base.OnEnter(e);
            //this.BackColor = this.FeiXuanClolor;
        }
        

    }
}

参考链接

winform 重写TextBox的OnTextChanged方法（事件）-优快云博客https://blog.youkuaiyun.com/weixin_30920853/article/details/97443196文本框获取焦点后变色-优快云博客https://blog.youkuaiyun.com/anlog/article/details/136227357?spm=1001.2014.3001.5502

特此记录

anlog

2024年2月22日