Class GridCheckBoxCellRenderer

Represents the class that used for drawing the check box cell.

Inheritance
System.Object
GridCellRendererBase
GridCheckBoxCellRenderer
GridCheckBoxSelectorCellRenderer
Implements
System.IDisposable
Inherited Members
System.Object.ToString()
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
Namespace: Syncfusion.WinForms.DataGrid.Renderers
Assembly: Syncfusion.SfDataGrid.WinForms.dll
Syntax
public class GridCheckBoxCellRenderer : GridCellRendererBase, IGridCellRenderer<TableControl>, IDisposable
Examples

The following example shows how to replace the custom check box cell renderer with existing check box cell renderer.

// Remove the existing check box cell renderer and added the custom check box cell renderer.
sfDataGrid1.CellRenderers.Remove("CheckBox");
sfDataGrid1.CellRenderers.Add("CheckBox", new CustomCheckBoxRenderer());

// Implementation for custom check box renderer.
public class CustomCheckBoxRenderer : GridCheckBoxCellRenderer
{
    public CustomCheckBoxRenderer()
    {
    }

    protected override void OnKeyDown(DataColumnBase dataColumn, RowColumnIndex rowColumnIndex, KeyEventArgs e)
    {
        if (e.KeyCode == Keys.Space)
        {
            // To avoid changing state of the check box on Space key.
            return;
        }

        base.OnKeyDown(dataColumn, rowColumnIndex, e);
    }
}

Constructors

GridCheckBoxCellRenderer()

Initializes a new instance of the GridCheckBoxCellRenderer class.

Declaration
public GridCheckBoxCellRenderer()

Methods

GetControlValue()

Overridden to get the control value.

Declaration
public override object GetControlValue()
Returns
Type Description
System.Object

Returns the control value.
Overrides

OnKeyDown(DataColumnBase, RowColumnIndex, KeyEventArgs)

Occurs when the key is pressed while the cell has focus.

Declaration
protected override void OnKeyDown(DataColumnBase dataColumn, RowColumnIndex rowColumnIndex, KeyEventArgs e)
Parameters
Type Name Description
DataColumnBase dataColumn

The DataColumnBase of the cell.
RowColumnIndex rowColumnIndex

The row and column index of the cell.
System.Windows.Forms.KeyEventArgs e

The System.Windows.Forms.KeyEventArgs that contains the event data.
Overrides

OnMouseHoverLeave(DataColumnBase, RowColumnIndex, MouseEventArgs)

Occurs when the mouse leaves the check box cell.

Declaration
protected override void OnMouseHoverLeave(DataColumnBase dataColumn, RowColumnIndex rowColumnIndex, MouseEventArgs e)
Parameters
Type Name Description
DataColumnBase dataColumn

The DataColumnBase of the check box cell.
RowColumnIndex rowColumnIndex

RowColumnIndex of the check box cell from which the mouse leaves.
System.Windows.Forms.MouseEventArgs e

The System.Windows.Forms.MouseEventArgs contains the event data.
Overrides

OnMouseMove(DataColumnBase, RowColumnIndex, MouseEventArgs)

Occurs when the mouse pointer rests on the check box cell.

Declaration
protected override void OnMouseMove(DataColumnBase column, RowColumnIndex rowColumnIndex, MouseEventArgs e)
Parameters
Type Name Description
DataColumnBase column

The DataColumnBase of the check box cell.
RowColumnIndex rowColumnIndex

The row and column index of the check box cell.
System.Windows.Forms.MouseEventArgs e

The System.Windows.Forms.MouseEventArgs contains the event data.
Overrides

OnMouseUp(DataColumnBase, RowColumnIndex, MouseEventArgs)

Occurs when the mouse pointer is over on the cell and a mouse button is released.

Declaration
protected override void OnMouseUp(DataColumnBase dataColumn, RowColumnIndex rowColumnIndex, MouseEventArgs e)
Parameters
Type Name Description
DataColumnBase dataColumn

The DataColumnBase of the cell.
RowColumnIndex rowColumnIndex

The RowColumnIndex of the cell.
System.Windows.Forms.MouseEventArgs e

The System.Windows.Forms.MouseEventArgs contains the event data.
Overrides

OnRender(Graphics, Rectangle, String, CellStyleInfo, DataColumnBase, RowColumnIndex)

Overridden to draw the check box of the cell.

Declaration
protected override void OnRender(Graphics paint, Rectangle cellRect, string cellValue, CellStyleInfo style, DataColumnBase column, RowColumnIndex rowColumnIndex)
Parameters
Type Name Description
System.Drawing.Graphics paint

The System.Drawing.Graphics that used to draw the check box.
System.Drawing.Rectangle cellRect

The cell rectangle.
System.String cellValue

The cell value.
CellStyleInfo style

The CellStyleInfo of the cell.
DataColumnBase column

The DataColumnBase of the cell.
RowColumnIndex rowColumnIndex

The row and column index of the cell.
Overrides

Implements

System.IDisposable