C# 窗体DataGridView单元格内多个按钮

在网上找了两种，基本一样，不同点是把button控件“画”在单元格，还是用画笔生成元素“画”在单元格

1、C#  窗体DataGridView单元格多个按钮控件

新建winform程序，添加一个datagridview

 
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
 
        private void Form1_Load(object sender, EventArgs e)
        {
            this.dataGridView1.Columns.Add("first", "first");
            this.dataGridView1.Columns.Add("second", "second");
            this.dataGridView1.Columns.Add("third", "third"); 
            dataGridView1.ColumnHeadersDefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleCenter;
 
            for (int i = 0; i < 15; i++)
                this.dataGridView1.Rows.Add();
 
            for (int i = 0; i < 15; i++)
            {
                Button[] btn = new Button[2];
                btn[0] = new Button();
                btn[0].Text = "操作1";
                btn[1] = new Button();
                btn[1].Text = "操作2";
                this.dataGridView1.Controls.Add(btn[0]);
                this.dataGridView1.Controls.Add(btn[1]);
                Rectangle rect = this.dataGridView1.GetCellDisplayRectangle(2, i, false);
                btn[0].Size = btn[1].Size = new Size(rect.Width / 2, rect.Height);
                btn[0].Location = new Point(rect.Left, rect.Top);
                btn[1].Location = new Point(rect.Left + btn[0].Width, rect.Top);
                btn[0].Click += new EventHandler(CustomBtn_Click);
                btn[1].Click += new EventHandler(CustomBtn_Click);
            }
        }
        void CustomBtn_Click(object sender, EventArgs e)
        {
            MessageBox.Show((sender as Button).Text);
        }
         
        //  滚动DataGridView时调整Button位置
        private void DataGridView_Scroll(object sender, ScrollEventArgs e)
        {
        }
        //  改变DataGridView列宽时调整Button位置
        private void DataGridView_ColumnWidthChanged(object sender, DataGridViewColumnEventArgs e)
        {
        }
    }

============================================

2.C#窗体实现DataGridView一列多个按钮

 private void DataGridViewEmail_RowPostPaint(object sender, DataGridViewRowPostPaintEventArgs e)
        {
            //自动编号，与数据无关
            Rectangle rectangle = new Rectangle(e.RowBounds.Location.X,
               e.RowBounds.Location.Y,
               this.DataGridViewEmail.RowHeadersWidth - 4,
               e.RowBounds.Height);
            TextRenderer.DrawText(e.Graphics,
                  (e.RowIndex + 1).ToString(),
                     this.DataGridViewEmail.RowHeadersDefaultCellStyle.Font,
                   rectangle,
                     this.DataGridViewEmail.RowHeadersDefaultCellStyle.ForeColor,
                   TextFormatFlags.VerticalCenter | TextFormatFlags.Right);
 
        }
 
        private void DataGridViewEmail_CellPainting(object sender, DataGridViewCellPaintingEventArgs e)
        {
            if (e.ColumnIndex >= 0 && e.RowIndex >= 0)
            {
                if (this.DataGridViewEmail.Columns[e.ColumnIndex].HeaderText == "操作")
                {
                    StringFormat sf = StringFormat.GenericDefault.Clone() as StringFormat;//设置重绘入单元格的字体样式
                    sf.FormatFlags = StringFormatFlags.DisplayFormatControl;
                    sf.Alignment = StringAlignment.Center;
                    sf.LineAlignment = StringAlignment.Center;
                    sf.Trimming = StringTrimming.EllipsisCharacter;
 
                    e.PaintBackground(e.CellBounds, false);//重绘边框
 
                    //设置要写入字体的大小
                    System.Drawing.Font myFont = new System.Drawing.Font("微软雅黑", 9F, System.Drawing.FontStyle.Underline, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
                    SizeF sizeDel = e.Graphics.MeasureString("删除", myFont);
                    SizeF sizeMod = e.Graphics.MeasureString("修改", myFont);
                    SizeF sizeLook = e.Graphics.MeasureString("查看", myFont);
 
                    float fDel = sizeDel.Width / (sizeDel.Width + sizeMod.Width + sizeLook.Width); //
                    float fMod = sizeMod.Width / (sizeDel.Width + sizeMod.Width + sizeLook.Width);
                    float fLook = sizeLook.Width / (sizeDel.Width + sizeMod.Width + sizeLook.Width);
 
                    //设置每个“按钮的边界”
                    RectangleF rectDel = new RectangleF(e.CellBounds.Left, e.CellBounds.Top, e.CellBounds.Width * fDel, e.CellBounds.Height);
                    RectangleF rectMod = new RectangleF(rectDel.Right, e.CellBounds.Top, e.CellBounds.Width * fMod, e.CellBounds.Height);
                    RectangleF rectLook = new RectangleF(rectMod.Right, e.CellBounds.Top, e.CellBounds.Width * fLook, e.CellBounds.Height);
                    e.Graphics.DrawString("删除", myFont, Brushes.Black, rectDel, sf); //绘制“按钮”
                    e.Graphics.DrawString("修改", myFont, Brushes.Black, rectMod, sf);
                    e.Graphics.DrawString("查看", myFont, Brushes.Black, rectLook, sf);
                    e.Handled = true;
                }
            }
 
        }
 
        private void DataGridViewEmail_CellMouseClick(object sender, DataGridViewCellMouseEventArgs e)
        {
            if (e.ColumnIndex >= 0 && e.RowIndex >= 0)
            {
                Point curPosition = e.Location;//当前鼠标在当前单元格中的坐标
                if (this.DataGridViewEmail.Columns[e.ColumnIndex].HeaderText == "操作")
                {
                    Graphics g = this.DataGridViewEmail.CreateGraphics();
                    System.Drawing.Font myFont = new System.Drawing.Font("宋体", 9F, System.Drawing.FontStyle.Underline, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
                    SizeF sizeDel = g.MeasureString("删除", myFont);
                    SizeF sizeMod = g.MeasureString("修改", myFont);
                    SizeF sizeLook = g.MeasureString("查看", myFont);
                    float fDel = sizeDel.Width / (sizeDel.Width + sizeMod.Width + sizeLook.Width);
                    float fMod = sizeMod.Width / (sizeDel.Width + sizeMod.Width + sizeLook.Width);
                    float fLook = sizeLook.Width / (sizeDel.Width + sizeMod.Width + sizeLook.Width);
 
                    Rectangle rectTotal = new Rectangle(0, 0, this.DataGridViewEmail.Columns[e.ColumnIndex].Width, this.DataGridViewEmail.Rows[e.RowIndex].Height);
                    RectangleF rectDel = new RectangleF(rectTotal.Left, rectTotal.Top, rectTotal.Width * fDel, rectTotal.Height);
                    RectangleF rectMod = new RectangleF(rectDel.Right, rectTotal.Top, rectTotal.Width * fMod, rectTotal.Height);
                    RectangleF rectLook = new RectangleF(rectMod.Right, rectTotal.Top, rectTotal.Width * fLook, rectTotal.Height);
                    //判断当前鼠标在哪个“按钮”范围内
                    if (rectDel.Contains(curPosition))//删除
                        MessageBox.Show("点击删除按钮");
                    else if (rectMod.Contains(curPosition))//修改
                        MessageBox.Show("点击修改按钮");
                    else if (rectLook.Contains(curPosition))//查看
                        MessageBox.Show("点击查看按钮");
                }
            }

转：https://blog.csdn.net/fsdad/article/details/121158819

https://blog.csdn.net/baidu_38995168/article/details/106519663