提问：如何将CSharp中的TextBox将边框改变成底部一条线

Question

提问：如何将CSharp中的TextBox将边框改变成底部一条线

Answer 1

参考方法http://blog.csdn.net/yanchao1023/article/details/5458803

Answer 2

style= "border:0;border-bottom:1   solid   black "

Answer 3

简单的做法:
把textbox设置为无边框
然后再在下面放一根线
c#好像没有画线的控件了

Answer 4

重绘textbox
 public partial class posTexbox : System .Windows .Forms .TextBox 
    {
        public posTexbox()
        {
            InitializeComponent();
            this.Width = 100;
            this.BorderStyle = BorderStyle.None;
        }
        private Color _linecolor = Color.Red;
        /// <summary>
        /// 线条颜色
        /// </summary>
        public Color LineColor
        {
            get
            {
                return this._linecolor;
            }
            set
            {
                this._linecolor = value;
                this.Invalidate();
            }
        }
        protected override void OnPaint(PaintEventArgs e)
        {
            //this.BackColor = Color.DarkSlateBlue;
            base.OnPaint(e);
        }
        private const int WM_PAINT = 0xF;
        protected override void WndProc(ref Message m)
        {
            base.WndProc(ref m);
            if (m.Msg == WM_PAINT)
            {
                DrawLine();
            }
        }
        private void DrawLine()
        {
            Graphics g = this.CreateGraphics();
            using (Pen p = new Pen(this._linecolor))
            {
                g.DrawLine(p, 0, this.Height - 1, this.Width, this.Height - 1);
            }
        }        protected override void OnEnter(EventArgs e)
        {
            base.OnEnter(e);
            this.SelectAll();
            this.BackColor = Color.White;
            this.ForeColor = Color.Black;
           
        }
        protected override void OnLeave(EventArgs e)
        {
            base.OnLeave(e);
            this.BackColor = Color.Black;
            this.ForeColor = Color.White;
        }
     
    }