c#重写datagridview透明（C#重写关键字）

本文实例为大家分享了C#重写DataGridView的实例代码，供大家参考，具体内容如下

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247 using System;using System.Collections.Generic;using System.Text;using System.Drawing;using System.Windows.Forms;using System.Drawing.Drawing2D;namespace CRD.WinUI.Editors{public class DataGridView : System.Windows.Forms.DataGridView{private bool _CellColorOnchange=false;private Color cell_color = Color.Yellow;private bool shifouhuasanjiao = true;private Color color_grid = Color.FromArgb(236, 233, 216);bool click = false;public DataGridView(){this.SetStyle(ControlStyles.DoubleBuffer | ControlStyles.AllPaintingInWmPaint, true);}protected override void OnCreateControl(){this.EnableHeadersVisualStyles = false;this.ColumnHeadersDefaultCellStyle.BackColor = Color.FromArgb(236, 233, 216);this.ColumnHeadersBorderStyle = DataGridViewHeaderBorderStyle.Raised;//this.ColumnHeadersHeight = 20;this.ColumnHeadersHeightSizeMode = DataGridViewColumnHeadersHeightSizeMode.DisableResizing;this.ColumnHeadersDefaultCellStyle.Alignment = System.Windows.Forms.DataGridViewContentAlignment.MiddleCenter;this.ColumnHeadersDefaultCellStyle.ForeColor = System.Drawing.SystemColors.WindowText;this.ColumnHeadersDefaultCellStyle.SelectionBackColor = System.Drawing.SystemColors.Highlight;this.ColumnHeadersDefaultCellStyle.SelectionForeColor = System.Drawing.SystemColors.HighlightText;this.RowHeadersDefaultCellStyle.Alignment = System.Windows.Forms.DataGridViewContentAlignment.MiddleLeft;this.RowHeadersDefaultCellStyle.BackColor = Color.FromArgb(236, 233, 216);this.RowHeadersDefaultCellStyle.ForeColor = System.Drawing.SystemColors.WindowText;this.RowHeadersBorderStyle = System.Windows.Forms.DataGridViewHeaderBorderStyle.Raised;this.DefaultCellStyle.SelectionBackColor = Color.DarkBlue;this.DefaultCellStyle.SelectionForeColor = Color.DarkSlateBlue;this.RowHeadersWidthSizeMode = DataGridViewRowHeadersWidthSizeMode.DisableResizing;//this.GridColor = Color.Silver;//表格点击后颜色表格线颜色this.BackgroundColor = System.Drawing.SystemColors.Window;this.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;this.AllowUserToOrderColumns = true;this.AutoGenerateColumns = true;base.OnCreateControl();}Color defaultcolor;//移到单元格时的颜色protected override void OnCellMouseMove(DataGridViewCellMouseEventArgs e){base.OnCellMouseMove(e);try{if (_CellColorOnchange)Rows[e.RowIndex].DefaultCellStyle.BackColor = cell_color;}catch (Exception){}}//进入单元格时保存当前的颜色protected override void OnCellMouseEnter(DataGridViewCellEventArgs e){base.OnCellMouseEnter(e);try{if (_CellColorOnchange)defaultcolor = Rows[e.RowIndex].DefaultCellStyle.BackColor;}catch (Exception){}}//离开时还原颜色protected override void OnCellMouseLeave(DataGridViewCellEventArgs e){base.OnCellMouseLeave(e);try{if (_CellColorOnchange)Rows[e.RowIndex].DefaultCellStyle.BackColor = defaultcolor;}catch (Exception){}}public bool CellColorOnchange{get{return _CellColorOnchange;}set{_CellColorOnchange = value;}}public Color DefaultcolorSet{get{return cell_color;}set{cell_color = value;}}public bool Shifouhua_Sanjiao{get{return shifouhuasanjiao;}set{shifouhuasanjiao = value;}}public Color Content_Grid_color{get{return color_grid;}set{color_grid = value;}}private void InitializeComponent(){((System.ComponentModel.ISupportInitialize)(this)).BeginInit();this.SuspendLayout();// // DataGridView// //this.RowTemplate.Height = 17;((System.ComponentModel.ISupportInitialize)(this)).EndInit();this.ResumeLayout(false);}//RowPostPaintprotected override void OnRowPostPaint(DataGridViewRowPostPaintEventArgs e){if (shifouhuasanjiao){using (SolidBrush b = new SolidBrush(Color.Black)){Image image = global::CRD.WinUI.Properties.Resources.未标题_1;//e.Graphics.DrawString("►", e.InheritedRowStyle.Font, b, e.RowBounds.Location.X + 5, e.RowBounds.Location.Y + 4);//e.Graphics.DrawImageUnscaled(image, e.RowBounds.Location.X + 1, e.RowBounds.Location.Y + 2, 8, 13);if (click)if (e.RowIndex == this.CurrentRow.Index) {e.Graphics.DrawImageUnscaled(image, e.RowBounds.Location.X + 1, e.RowBounds.Location.Y + 2, 8, 13);}}}base.OnRowPostPaint(e);}protected override void OnRowPrePaint(DataGridViewRowPrePaintEventArgs e){if (shifouhuasanjiao){using (SolidBrush b = new SolidBrush(Color.Black)){Image image = global::CRD.WinUI.Properties.Resources.未标题_1;//e.Graphics.DrawString("►", e.InheritedRowStyle.Font, b, e.RowBounds.Location.X + 5, e.RowBounds.Location.Y + 4);//e.Graphics.DrawImageUnscaled(image, e.RowBounds.Location.X + 1, e.RowBounds.Location.Y + 2, 8, 13);}}base.OnRowPrePaint(e);}protected override void OnCellClick(DataGridViewCellEventArgs e){if (e.RowIndex > -1&&this.CurrentRow.Index == e.RowIndex ){click = true;}base.OnCellClick(e);}protected override void OnCellPainting(DataGridViewCellPaintingEventArgs e){base.OnCellPainting(e);SolidBrush b = new SolidBrush(Color.FromArgb(236, 233, 216));Pen whitePen = new Pen(color_grid, 1);if (e.ColumnIndex == -1 && e.RowIndex == -1){using (LinearGradientBrush brush = new LinearGradientBrush(e.CellBounds, Color.Gray,Color.Gray, LinearGradientMode.ForwardDiagonal)){e.Graphics.FillRectangle(b, e.CellBounds);Rectangle border = e.CellBounds;border.Offset(new Point(-1, -1));e.Graphics.DrawRectangle(Pens.Gray, border);}e.PaintContent(e.CellBounds);e.Handled = true;}else if (e.RowIndex == -1){//标题行using (LinearGradientBrush brush = new LinearGradientBrush(e.CellBounds, Color.Silver,Color.Silver, LinearGradientMode.Vertical)){e.Graphics.FillRectangle(b, e.CellBounds);Rectangle border = e.CellBounds;border.Offset(new Point(-1, -1));e.Graphics.DrawRectangle(Pens.Silver, border);//e.Graphics.DrawRectangle(Pens.Black, border.X + 1, border.Y + 1, border.Width - 1, border.Height - 1);}e.PaintContent(e.CellBounds);e.Handled = true;}else if (e.ColumnIndex == -1){//标题列using (LinearGradientBrush brush = new LinearGradientBrush(e.CellBounds, Color.Silver,Color.Silver, LinearGradientMode.Horizontal)){e.Graphics.FillRectangle(b, e.CellBounds);Rectangle border = e.CellBounds;border.Offset(new Point(-1, -1));e.Graphics.DrawRectangle(Pens.Silver, border);//e.Graphics.DrawRectangle(Pens.Black, border.X+1,border.Y+1,border.Width-1,border.Height-1);e.Graphics.DrawString("△", Font,b,e.CellBounds.X,e.CellBounds.Y);}e.PaintContent(e.CellBounds);e.Handled = true;}else{//Color.FromArgb(193, 193, 193)Rectangle border = e.CellBounds;border.Offset(new Point(-1, -1));e.Graphics.DrawRectangle(whitePen, border);}}}}