DataGridViewCellPaintingEventArgs Class

Definition

Namespace:

System.Windows.Forms

Assembly:

System.Windows.Forms.dll

Provides data for the CellPainting event.

public ref class DataGridViewCellPaintingEventArgs : System::ComponentModel::HandledEventArgs

public class DataGridViewCellPaintingEventArgs : System.ComponentModel.HandledEventArgs

type DataGridViewCellPaintingEventArgs = class
    inherit HandledEventArgs

Public Class DataGridViewCellPaintingEventArgs
Inherits HandledEventArgs

Inheritance

Object

EventArgs

HandledEventArgs

DataGridViewCellPaintingEventArgs

Examples

The following code example illustrates the use of this type. For more information, see How to: Customize the Appearance of Cells in the Windows Forms DataGridView Control.

private void dataGridView1_CellPainting(object sender,
System.Windows.Forms.DataGridViewCellPaintingEventArgs e)
{
    if (this.dataGridView1.Columns["ContactName"].Index ==
        e.ColumnIndex && e.RowIndex >= 0)
    {
        Rectangle newRect = new Rectangle(e.CellBounds.X + 1,
            e.CellBounds.Y + 1, e.CellBounds.Width - 4,
            e.CellBounds.Height - 4);

        using (
            Brush gridBrush = new SolidBrush(this.dataGridView1.GridColor),
            backColorBrush = new SolidBrush(e.CellStyle.BackColor))
        {
            using (Pen gridLinePen = new Pen(gridBrush))
            {
                // Erase the cell.
                e.Graphics.FillRectangle(backColorBrush, e.CellBounds);

                // Draw the grid lines (only the right and bottom lines;
                // DataGridView takes care of the others).
                e.Graphics.DrawLine(gridLinePen, e.CellBounds.Left,
                    e.CellBounds.Bottom - 1, e.CellBounds.Right - 1,
                    e.CellBounds.Bottom - 1);
                e.Graphics.DrawLine(gridLinePen, e.CellBounds.Right - 1,
                    e.CellBounds.Top, e.CellBounds.Right - 1,
                    e.CellBounds.Bottom);

                // Draw the inset highlight box.
                e.Graphics.DrawRectangle(Pens.Blue, newRect);

                // Draw the text content of the cell, ignoring alignment.
                if (e.Value != null)
                {
                    e.Graphics.DrawString((String)e.Value, e.CellStyle.Font,
                        Brushes.Crimson, e.CellBounds.X + 2,
                        e.CellBounds.Y + 2, StringFormat.GenericDefault);
                }
                e.Handled = true;
            }
        }
    }
}

Private Sub dataGridView1_CellPainting(ByVal sender As Object, _
    ByVal e As System.Windows.Forms.DataGridViewCellPaintingEventArgs) _
    Handles dataGridView1.CellPainting

    If Me.dataGridView1.Columns("ContactName").Index = _
        e.ColumnIndex AndAlso e.RowIndex >= 0 Then

        Dim newRect As New Rectangle(e.CellBounds.X + 1, e.CellBounds.Y + 1, _
            e.CellBounds.Width - 4, e.CellBounds.Height - 4)
        Dim backColorBrush As New SolidBrush(e.CellStyle.BackColor)
        Dim gridBrush As New SolidBrush(Me.dataGridView1.GridColor)
        Dim gridLinePen As New Pen(gridBrush)

        Try

            ' Erase the cell.
            e.Graphics.FillRectangle(backColorBrush, e.CellBounds)

            ' Draw the grid lines (only the right and bottom lines;
            ' DataGridView takes care of the others).
            e.Graphics.DrawLine(gridLinePen, e.CellBounds.Left, _
                e.CellBounds.Bottom - 1, e.CellBounds.Right - 1, _
                e.CellBounds.Bottom - 1)
            e.Graphics.DrawLine(gridLinePen, e.CellBounds.Right - 1, _
                e.CellBounds.Top, e.CellBounds.Right - 1, _
                e.CellBounds.Bottom)

            ' Draw the inset highlight box.
            e.Graphics.DrawRectangle(Pens.Blue, newRect)

            ' Draw the text content of the cell, ignoring alignment.
            If (e.Value IsNot Nothing) Then
                e.Graphics.DrawString(CStr(e.Value), e.CellStyle.Font, _
                Brushes.Crimson, e.CellBounds.X + 2, e.CellBounds.Y + 2, _
                StringFormat.GenericDefault)
            End If
            e.Handled = True

        Finally
            gridLinePen.Dispose()
            gridBrush.Dispose()
            backColorBrush.Dispose()
        End Try

    End If

End Sub

Remarks

The CellPainting event is raised for each DataGridViewCell that is visible on a DataGridView. To improve performance, set the properties in a DataGridViewCellPaintingEventArgs to change the appearance of the cell instead of directly accessing a cell in the DataGridView. If you manually paint the cell, set the HandledEventArgs.Handled property to true. If you do not set HandledEventArgs.Handled to true, the cell will paint over your customizations.

Constructors

DataGridViewCellPaintingEventArgs(DataGridView, Graphics, Rectangle, Rectangle, Int32, Int32, DataGridViewElementStates, Object, Object, String, DataGridViewCellStyle, DataGridViewAdvancedBorderStyle, DataGridViewPaintParts)

Initializes a new instance of the DataGridViewCellPaintingEventArgs class.

Properties

AdvancedBorderStyle	Gets the border style of the current DataGridViewCell.
CellBounds	Get the bounds of the current DataGridViewCell.
CellStyle	Gets the cell style of the current DataGridViewCell.
ClipBounds	Gets the area of the DataGridView that needs to be repainted.
ColumnIndex	Gets the column index of the current DataGridViewCell.
ErrorText	Gets a string that represents an error message for the current DataGridViewCell.
FormattedValue	Gets the formatted value of the current DataGridViewCell.
Graphics	Gets the Graphics used to paint the current DataGridViewCell.
Handled	Gets or sets a value that indicates whether the event handler has completely handled the event or whether the system should continue its own processing. (Inherited from HandledEventArgs)
PaintParts	The cell parts that are to be painted.
RowIndex	Gets the row index of the current DataGridViewCell.
State	Gets the state of the current DataGridViewCell.
Value	Gets the value of the current DataGridViewCell.

Methods

Equals(Object)	Determines whether the specified object is equal to the current object. (Inherited from Object)
GetHashCode()	Serves as the default hash function. (Inherited from Object)
GetType()	Gets the Type of the current instance. (Inherited from Object)
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
Paint(Rectangle, DataGridViewPaintParts)	Paints the specified parts of the cell for the area in the specified bounds.
PaintBackground(Rectangle, Boolean)	Paints the cell background for the area in the specified bounds.
PaintContent(Rectangle)	Paints the cell content for the area in the specified bounds.
ToString()	Returns a string that represents the current object. (Inherited from Object)

See also

• CellPainting
• DataGridViewCell
• DataGridView