求教怎么隐藏datetimepicker框的小图标

Question

如框，这个日历小图标不想让他显示，有没有隐藏的方法，求各位大神指路~~~

Answer 1

type=>1 2 3 4 5 不要的话是1  其他自己试试

Answer 2

改变dataTimePicker的宽度

Answer 3

继承System.Windows.Forms.DateTimePicker
重写部分方法protected override void WndProc(ref System.Windows.Forms.Message m)
        {
            base.WndProc(ref m);            if (m.Msg == WM_PAINT)
            {
                IntPtr hDC = GetWindowDC(m.HWnd);
                if (hDC.ToInt32() == 0) //如果取设备上下文失败则返回     
                {
                    return;
                }                PaintDateTimePicker(Graphics.FromHdc(hDC));
                ReleaseDC(m.HWnd, hDC);
            }
        }
private void PaintDateTimePicker(Graphics g)
        {
            g.SmoothingMode = SmoothingMode.AntiAlias;
            g.TextRenderingHint = TextRenderingHint.SystemDefault;//g.TextRenderingHint = TextRenderingHint.AntiAliasGridFit;            //背景色刷
            Brush bkgBrush;            //字体色刷
            Brush fcBrush;
            int iDropDownButtonWidth = 17;
            int iDropDownButtonHeight = this.Height;
            int iDropDownButtonLocatinX = 17;
            int iDropDownButtonLocatinY = 0;            if (!PublicFunction.IsHigherWinXP())
            {
                iDropDownButtonWidth = 17;
                iDropDownButtonHeight = this.Height - 2;
                iDropDownButtonLocatinX = 15;
                iDropDownButtonLocatinY = 1;
            }
            //下拉按钮
            Rectangle dropDownRectangle = new Rectangle(ClientRectangle.Width - iDropDownButtonLocatinX, iDropDownButtonLocatinY, iDropDownButtonWidth, iDropDownButtonHeight);            //设置背景色和字体色            bkgBrush = new SolidBrush(this._backColor);
            fcBrush = new SolidBrush(this._foreColor);
            int iBroderX = 0;
            int iBroderY = 0;
            int iBorderWidth = this.Width;
            int iBorderHeight = this.Height;
            if (!PublicFunction.IsHigherWinXP())
            {
                iBroderX = -2;
                iBroderY = -2;
                iBorderWidth = this.Width + 2;
                iBorderHeight = this.Height + 2;
            }            //画3D边框
            //ControlPaint.DrawBorder3D(g, new Rectangle(iBroderX, iBroderY, iBorderWidth, iBorderHeight), Border3DStyle.SunkenInner, Border3DSide.All);
            int iBackColorX = 0;
            int iBackColorY = 0;
            //为了可以手输，Enable时只是重画按钮区域
            if (this.Enabled)
            {
                if (PublicFunction.IsHigherWinXP())
                {
                    iBackColorX = this.Width - 35;
                }
                else
                {
                    iBackColorX = this.Width - 20;
                    iBackColorY = 1;
                }
            }
            else
            {
                if (!PublicFunction.IsHigherWinXP())
                {
                    iBackColorX = 2;
                    iBackColorY = 2;
                }
            }            //画背景
            g.FillRectangle(bkgBrush, iBackColorX, iBackColorY, ClientRectangle.Width, ClientRectangle.Height);            //为了可以手输，只在Disable时才重画文本
            if (!this.Enabled)
            {
                int iTextY = this.ClientSize.Height / 2;
                int iTextX = 0;
                if (!PublicFunction.IsHigherWinXP())
                {
                    iTextY = this.ClientSize.Height / 2 + 3;
                    iTextX = 2;
                }
                //画文本
                g.DrawString(base.Text, this.Font, fcBrush, iTextX, iTextY, new StringFormat() { LineAlignment = StringAlignment.Center });
            }            //画边框
            //g.DrawRectangle(_BorderPen, new Rectangle(iBroderX, iBroderY, iBorderWidth, iBorderHeight));
            ControlPaint.DrawBorder(g, new Rectangle(iBroderX, iBroderY, iBorderWidth, iBorderHeight), borderColor, ButtonBorderStyle.Solid);            //画下拉按钮
            if (PublicFunction.IsHigherWinXP() || !Application.RenderWithVisualStyles)
            {
                ControlPaint.DrawComboButton(g, dropDownRectangle, this.Enabled ? System.Windows.Forms.ButtonState.Flat : System.Windows.Forms.ButtonState.All);
            }
            else
            {
                ComboBoxRenderer.DrawDropDownButton(g, dropDownRectangle, this.Enabled ? ComboBoxState.Normal : ComboBoxState.Disabled);
            }            g.Dispose();
            bkgBrush.Dispose();
            fcBrush.Dispose();
        }