如何改变textBox形状

用css可以类似这个那个图片就是椭圆的
.main1field
{
font-family: "Arial" , "Helvetica" , "sans-serif";
font-size: 14px;
color: #0660B0;
background-image: url(../images/main_1_fieldbg.gif);
background-repeat: no-repeat;
border: none;
height: 21px;
width: 217px;
padding-top: 3px;
padding-right: 8px;
padding-bottom: 3px;
padding-left: 8px;
background-attachment: fixed;
}

winform or web form?

http://www.codeproject.com/useritems/RoundedCornerTextbox.asp

自己画，或者直接使用WPF

有c#的吗？找了好久也没有找到这样的控件，vb的我看的不是很懂

前面看到一个高手写的：
namespace UnderLineBox
{
    public class UnderLineBox : TextBox
    {
        private bool m_underLine;        public bool UnderLine
        {
            get { return m_underLine; }
            set
            {
                if (this.m_underLine != value)
                {
                    if (value)
                    {
                        this.BorderStyle = BorderStyle.None;
                    }
                    m_underLine = value;
                }
            }
        }
        protected override void WndProc(ref Message m)
        {
            base.WndProc(ref m);
            if (m.Msg == 0xf || m.Msg == 0x14 || m.Msg == 0x85)
            {
                if (this.BorderStyle == BorderStyle.None)
                {
                    if (m_underLine)
                    {
                        using (Graphics g = Graphics.FromHwnd(this.Handle))
                        {
                            g.DrawLine(SystemPens.ControlText, 0, this.Height - 1, this.Width - 1, this.Height - 1);//这里写你要绘制的形状。
                        }
                    }
                }
            }
        }
    }}

如楼上所示
自定义一个继承TextBox的自定义控件，重绘TextBox

那样做只是在textBox里画了一个形状，我是希望textBox的外形都变了，TextBox不支持OnPaint事件

using System;
using System.ComponentModel;
using System.Collections.Generic;
using System.Diagnostics;
using System.Text;
using System.Windows.Forms;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Runtime.InteropServices;namespace testApplication1
{
    public partial class RounderTextBox : TextBox
    {
        #region Declare        private States state = States.Normal;
        private Pen borderPen;
        private Brush textBrush;
        private Rectangle mainRect;
        private PointF txtLoc;        private enum States
        {
            Normal,
            Focused,
            Disabled
        }        #endregion        #region DLL Import
[DllImport("user32.dll")]
private static extern IntPtr GetWindowDC(IntPtr hwnd);
        [DllImport("user32.dll")]
        private static extern int ReleaseDC(IntPtr hwnd, IntPtr hDC);
        #endregion        public RounderTextBox()
        {

        }        protected override void WndProc(ref Message m)
        {
            switch(m.Msg)
            {
                case 15:
                    Rectangle rect = new Rectangle(0, 0, base.Width, base.Height);
                    IntPtr hDC = GetWindowDC(this.Handle);
                    Graphics g = Graphics.FromHdc(hDC);
                    if (this.Enabled)
                    {
                        g.Clear(Color.White);
                    }
                    else
                    {
                        g.Clear(Color.FromName("control"));
                    }                    DrawBorder(g);
                    DrawText(g);
                    ReleaseDC(this.Handle, hDC);
                    g.Dispose();
                    break;
                case 7:
                case 8:
                    UpdateState();
                    break;
            }            base.WndProc(ref m);
        }        #region Draw Method
        private void DrawBorder(Graphics g)
        {
            mainRect = new Rectangle(0, 0, this.Width - 1, this.Height - 1);
            switch (state)
            {
                case States.Focused:
                    borderPen = new Pen(Color.Blue);
                    break;
                case States.Disabled:
                    borderPen = new Pen(Color.DarkGray);
                    break;
                case States.Normal:
                    borderPen = new Pen(Color.DimGray);
                    break;
            }            TekenRondeRechthoek(g, borderPen, mainRect, 3);
        }        private void TekenRondeRechthoek(Graphics g, Pen pen, Rectangle rectangle,
            float radius)
        {
            float size = radius * 2;
            GraphicsPath gp = new GraphicsPath();
            gp.AddArc(rectangle.X, rectangle.Y, size, size, 180, 90);
            gp.AddArc((rectangle.X + (rectangle.Width - size)), rectangle.Y, size, size, 270, 90);
            gp.AddArc((rectangle.X + (rectangle.Width - size)),
                (rectangle.Y + (rectangle.Height - size)), size, size, 0, 90);
            gp.AddArc(rectangle.X, (rectangle.Y + (rectangle.Height - size)), size, size, 90, 90);
            gp.CloseFigure();
            g.DrawPath(pen, gp);
            gp.Dispose();
        }        private void DrawText(Graphics g)
        {
            string text = "";
            switch (state)
            {
                case States.Normal:
                case States.Focused:
                    textBrush = new SolidBrush(this.ForeColor);
                    break;
                case States.Disabled:
                    textBrush = new SolidBrush(Color.DarkGray);
                    break;
            }
            if (g.MeasureString(this.Text, this.Font).Width > this.Width - 30)
            {
                int i = -1;
                while (g.MeasureString(text, this.Font).Width > this.Width - 30)
                {
                    i++;
                    text += this.Text.Substring(i, 1);
                }
            }
            else
            {
                text = this.Text;
            }
            float temp;
            if (this.RightToLeft == RightToLeft.No)
            {
                temp = 1;
            }
            else
            {
                temp = this.Width - g.MeasureString(text, this.Font).Width;
            }
            txtLoc = new PointF(temp, 4);
            g.DrawString(text, this.Font, textBrush, txtLoc);
        }        #endregion        private void UpdateState()
        {
            States temp = state;
            if (this.Enabled)
            {
                if (ClientRectangle.Contains(PointToClient(Control.MousePosition)))
                {
                    this.state = States.Focused;
                }
                else if (this.Focused)
                {
                    this.state = States.Focused;
                }
                else
                {
                    this.state = States.Normal;
                }
            }
            else
            {
                this.state = States.Disabled;
            }
            if ((state & temp) != state)
            {
                this.Invalidate();
            }
        }
    }
}大致的翻译了一下那个VB.NET的Source
你自己在根据需要改改就可以了
主要的思路就是继承一个TextBox
然后监视他的WndProc消息
在WM_Paint消息的时候重绘这个TextBox
如果是Button或者窗口的话就容易的多
直接利用GraphicsPath修改Region就可以了

直接在在WM_Paint消息的时候，把DrawBorder换成如下Source
GraphicsPath p = new GraphicsPath();
            int width = this.ClientSize.Width;
            int height = this.ClientSize.Height;
            p.AddClosedCurve(new Point[]{new Point(width/2, height/10),
              new Point(width,0), new Point(width, height/3),
              new Point(width-width/3, height),
              new Point(width/7, height-height/8)});
            this.Region = new Region(p);
            this.Invalidate();
这个改变的很清楚
当然你要调整相应的DrawText代码

调试易

如何改变textBox形状

解决方案 »