datagridview 自定义标题背景图片

datagridview很好用，但样子太差了。

其它还好说，就是标题，不好弄。鼓捣了半天，终于搞定，先记下来，省得忘了。。

private void dataGridView1_CellPainting(object sender, DataGridViewCellPaintingEventArgs e)
        {
            if (e.RowIndex == -1)
            {
                int X = e.CellBounds.X;
                int Y = e.CellBounds.Y;
                int W = e.CellBounds.Width;
                int H = e.CellBounds.Height;

                Pen blackPen = new Pen(Color.FromArgb(195, 195, 195));//边框颜色

                Image image = Properties.Resources._title1;//背景图片
                TextureBrush tBrush = new TextureBrush(image);

                e.Graphics.FillRectangle(tBrush, new Rectangle(X, Y, W, H));

                if (e.ColumnIndex == 0)
                    e.Graphics.DrawRectangle(blackPen, new Rectangle(X, Y + 1, W - 1, H - 2));
                else
                    e.Graphics.DrawRectangle(blackPen, new Rectangle(X - 1, Y + 1, W, H - 2));

                e.PaintContent(e.CellBounds);
                e.Handled = true;
            }
        }

 

第一列。全选实现，园子里很多了。先放这。

#region 重写复选框表头（实现全选）

        //实现全选的事件参数类
        public class DataGridviewCheckboxHeaderEventHander : EventArgs
        {
            private bool checkedState = false;

            public bool CheckedState
            {
                get { return checkedState; }
                set { checkedState = value; }
            }
        }

        //与事件关联的委托
        public delegate void DataGridviewCheckboxHeaderCellEventHander(object sender, DataGridviewCheckboxHeaderEventHander e);

        //重写 DataGridViewColumnHeaderCell
        public class DataGridviewCheckboxHeaderCell : DataGridViewColumnHeaderCell
        {
            private Point checkBoxLocation;
            private Size checkBoxSize;
            private bool isChecked = false;
            private Point cellLocation = new Point();
            private System.Windows.Forms.VisualStyles.CheckBoxState cbState = System.Windows.Forms.VisualStyles.CheckBoxState.UncheckedNormal;

            public event DataGridviewCheckboxHeaderCellEventHander OnCheckBoxClicked;


            //绘制列头checkbox
            protected override void Paint(Graphics g,
                                          Rectangle clipBounds,
                                          Rectangle cellBounds,
                                          int rowIndex,
                                          DataGridViewElementStates dataGridViewElementState,
                                          object value,
                                          object formattedValue,
                                          string errorText,
                                          DataGridViewCellStyle cellStyle,
                                          DataGridViewAdvancedBorderStyle advancedBorderStyle,
                                          DataGridViewPaintParts paintParts)
            {
                base.Paint(g, clipBounds, cellBounds, rowIndex, dataGridViewElementState, value, formattedValue, errorText, cellStyle, advancedBorderStyle, paintParts);
                Point p = new Point();
                Size s = CheckBoxRenderer.GetGlyphSize(g, System.Windows.Forms.VisualStyles.CheckBoxState.UncheckedNormal);
                //列头checkbox的X坐标
                p.X = cellBounds.Location.X + (cellBounds.Width / 2) - (s.Width / 2) - 1;
                //列头checkbox的Y坐标
                p.Y = cellBounds.Location.Y + (cellBounds.Height / 2) - (s.Height / 2);
                cellLocation = cellBounds.Location;
                checkBoxLocation = p;
                checkBoxSize = s;
                if (isChecked)
                    cbState = System.Windows.Forms.VisualStyles.CheckBoxState.CheckedNormal;
                else
                    cbState = System.Windows.Forms.VisualStyles.CheckBoxState.UncheckedNormal;
                //绘制复选框
                CheckBoxRenderer.DrawCheckBox(g, checkBoxLocation, cbState);
            }

            /// <summary>
            /// 响应点击列头checkbox单击事件
            /// </summary>
            protected override void OnMouseClick(DataGridViewCellMouseEventArgs e)
            {
                Point p = new Point(e.X + cellLocation.X, e.Y + cellLocation.Y);
                if (p.X >= checkBoxLocation.X && p.X <= checkBoxLocation.X + checkBoxSize.Width && p.Y >= checkBoxLocation.Y && p.Y <= checkBoxLocation.Y + checkBoxSize.Height)
                {
                    isChecked = !isChecked;

                    //获取列头checkbox的选择状态
                    DataGridviewCheckboxHeaderEventHander ex = new DataGridviewCheckboxHeaderEventHander();
                    ex.CheckedState = isChecked;

                    //此处不代表选择的列头checkbox，只是作为参数传递。应该列头checkbox是绘制出来的，无法获得它的实例
                    object sender = new object();

                    if (OnCheckBoxClicked != null)
                    {
                        //触发单击事件
                        OnCheckBoxClicked(sender, ex);
                        this.DataGridView.InvalidateCell(this);
                    }

                }
                base.OnMouseClick(e);
            }
        }

        #endregion

然后在绑定事件后，加入

DataGridviewCheckboxHeaderCell ch = new DataGridviewCheckboxHeaderCell();
            ch.OnCheckBoxClicked += new DataGridviewCheckboxHeaderCellEventHander(ch_OnCheckBoxClicked);  //关联单击事件

            //第一列为DataGridViewCheckBoxColumn
            DataGridViewCheckBoxColumn checkboxCol = this.dataGridView1.Columns[0] as DataGridViewCheckBoxColumn;
            //checkboxCol.ThreeState = true;
            checkboxCol.HeaderCell = ch;
            checkboxCol.HeaderCell.Value = string.Empty;//消除列头checkbox旁出现的文字

void ch_OnCheckBoxClicked(object sender, Form2.DataGridviewCheckboxHeaderEventHander e)
        {
            foreach (DataGridViewRow dgvRow in this.dataGridView1.Rows)
            {
                if (e.CheckedState)
                {
                    dgvRow.Cells[0].Value = true;
                }
                else
                {
                    dgvRow.Cells[0].Value = false;
                }
            }
        }