CheckBox Header Column For DataGridView

参考文章:http://www.codeproject.com/KB/grid/CheckBoxHeaderCell.aspx

使用有点麻烦,稍微改动一下就可以在设计器中使用, 直接贴代码了!

 

    public partial class SelectAllCheckBoxCell : DataGridViewCheckBoxCell
    {
        public SelectAllCheckBoxCell()
            : base()
        {
            this.Style.Alignment = DataGridViewContentAlignment.MiddleCenter;
        }

        public override object DefaultNewRowValue
        {
            get
            {
                return false;
            }
        }
    }

 

 

public partial class SelectAllHeaderCell : DataGridViewColumnHeaderCell
    {
        Point checkBoxLocation;
        Size checkBoxSize;
        bool _checked = false;
        Point _cellLocation = new Point();
        System.Windows.Forms.VisualStyles.CheckBoxState _cbState =
            System.Windows.Forms.VisualStyles.CheckBoxState.UncheckedNormal;

        public SelectAllHeaderCell()
        {
        }

        protected override void Paint(System.Drawing.Graphics graphics,
            System.Drawing.Rectangle clipBounds,
            System.Drawing.Rectangle cellBounds,
            int rowIndex,
            DataGridViewElementStates dataGridViewElementState,
            object value,
            object formattedValue,
            string errorText,
            DataGridViewCellStyle cellStyle,
            DataGridViewAdvancedBorderStyle advancedBorderStyle,
            DataGridViewPaintParts paintParts)
        {
            this.Value = string.Empty;

            base.Paint(graphics, clipBounds, cellBounds, rowIndex,
                dataGridViewElementState, value,
                formattedValue, errorText, cellStyle,
                advancedBorderStyle, paintParts);

            Point p = new Point();
            Size s = CheckBoxRenderer.GetGlyphSize(graphics,
            System.Windows.Forms.VisualStyles.CheckBoxState.UncheckedNormal);

            p.X = cellBounds.Location.X +
                // 4;
            (cellBounds.Width / 2) - (s.Width / 2);
            p.Y = cellBounds.Location.Y +
                (cellBounds.Height / 2) - (s.Height / 2);
            _cellLocation = cellBounds.Location;
            checkBoxLocation = p;
            checkBoxSize = s;
            if (_checked)
                _cbState = System.Windows.Forms.VisualStyles.
                    CheckBoxState.CheckedNormal;
            else
                _cbState = System.Windows.Forms.VisualStyles.
                    CheckBoxState.UncheckedNormal;

            CheckBoxRenderer.DrawCheckBox
            (graphics, checkBoxLocation, _cbState);
        }

        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)
            {
                _checked = !_checked;

                this.DataGridView.InvalidateCell(this);

                for (int i = 0; i < this.DataGridView.Rows.Count; i++)
                {
                    this.DataGridView.Rows[i].Cells[this.ColumnIndex].Value = _checked;
                }
                this.DataGridView.EndEdit();
            }

            base.OnMouseClick(e);
        }
    }

 

 

public partial class SelectAllCheckBoxColumn : DataGridViewColumn
    {
        public SelectAllCheckBoxColumn()
            : base(new SelectAllCheckBoxCell())
        {
            this.HeaderCell = new SelectAllHeaderCell();
        }
    }