Class GridCheckBoxSelectorCellRenderer

Represents the class that is used for drawing the check box selector 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 GridCheckBoxSelectorCellRenderer : GridCheckBoxCellRenderer, IGridCellRenderer<TableControl>, IDisposable
Examples

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

// Remove the existing check box cell renderer and added the custom check box cell renderer.
sfDataGrid1.CellRenderers.Remove("CheckBoxSelector");
sfDataGrid1.CellRenderers.Add("CheckBoxSelector", new CustomCheckBoxSelectorRenderer());
// Implement custom check box renderer.
public class CustomCheckBoxSelectorRenderer : GridCheckBoxSelectorCellRenderer
{
    public CustomCheckBoxSelectorRenderer()
    {
    }

    protected override void OnRender(Graphics paint, Rectangle cellRect, string cellValue, CellStyleInfo style, DataColumnBase column, RowColumnIndex rowColumnIndex)
    {
        base.OnRender(paint, cellRect, cellValue, style, column, rowColumnIndex);
    }

    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

GridCheckBoxSelectorCellRenderer()

Initializes a new instance of the GridCheckBoxSelectorCellRenderer class.

Declaration
public GridCheckBoxSelectorCellRenderer()

Methods

CanValidate()

Overridden to cancel the validation for GridCheckBoxSelectorColumn.

Declaration
public override bool CanValidate()
Returns
Type Description
System.Boolean

By default, it returns false.
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

OnMouseDown(DataColumnBase, RowColumnIndex, MouseEventArgs)

Occurs when mouse down on the check box cell.

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

The data column of the check box cell.
RowColumnIndex rowColumnIndex

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

The MouseEventArgs that contains the event data.
Overrides

OnMouseUp(DataColumnBase, RowColumnIndex, MouseEventArgs)

Occurs when mouse up on the check box selector cell.

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

The data column of the check box selector cell.
RowColumnIndex rowColumnIndex

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

The MouseEventArgs that contains the event data.
Overrides

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

Renders the check box cell for the selector column.

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