Export (0) Print
Expand All
Expand Minimize

DataGridView.RowPostPaint Event

Occurs after a DataGridViewRow is painted.

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in system.windows.forms.dll)

'Declaration
Public Event RowPostPaint As DataGridViewRowPostPaintEventHandler
'Usage
Dim instance As DataGridView
Dim handler As DataGridViewRowPostPaintEventHandler

AddHandler instance.RowPostPaint, handler

/** @event */
public void add_RowPostPaint (DataGridViewRowPostPaintEventHandler value)

/** @event */
public void remove_RowPostPaint (DataGridViewRowPostPaintEventHandler value)

In JScript, you can handle the events defined by a class, but you cannot define your own.
Not applicable.

You can handle this event alone or in combination with the RowPrePaint event to customize the appearance of rows in the control. You can paint entire rows yourself, or paint specific parts of rows and use the following methods of the DataGridViewRowPostPaintEventArgs class to paint other parts:

You can also use the VisualStyleRenderer class to paint standard controls using the current theme. For more information, see Rendering Controls with Visual Styles. If you are using Visual Studio 2005, you also have access to a large library of standard images that you can use with the DataGridView control.

Visual Studio 2005 Image Library
Visual Studio 2008 Image Library
Visual Studio Image Library

For more information about handling events, see Consuming Events.

The following code example demonstrates how to use a handler for the RowPostPaint event to paint textual content that spans the entire row below the normal cell values. This example is part of a larger example available in How to: Customize the Appearance of Rows in the Windows Forms DataGridView Control.

' Paints the content that spans multiple columns and the focus rectangle.
Sub dataGridView1_RowPostPaint(ByVal sender As Object, _
    ByVal e As DataGridViewRowPostPaintEventArgs) _
    Handles dataGridView1.RowPostPaint

    ' Calculate the bounds of the row.
    Dim rowBounds As New Rectangle(Me.dataGridView1.RowHeadersWidth, _
        e.RowBounds.Top, Me.dataGridView1.Columns.GetColumnsWidth( _
        DataGridViewElementStates.Visible) - _
        Me.dataGridView1.HorizontalScrollingOffset + 1, e.RowBounds.Height)

    Dim forebrush As SolidBrush = Nothing
    Try
        ' Determine the foreground color.
        If (e.State And DataGridViewElementStates.Selected) = _
            DataGridViewElementStates.Selected Then

            forebrush = New SolidBrush(e.InheritedRowStyle.SelectionForeColor)
        Else
            forebrush = New SolidBrush(e.InheritedRowStyle.ForeColor)
        End If

        ' Get the content that spans multiple columns.
        Dim recipe As Object = _
            Me.dataGridView1.Rows.SharedRow(e.RowIndex).Cells(2).Value

        If (recipe IsNot Nothing) Then
            Dim text As String = recipe.ToString()

            ' Calculate the bounds for the content that spans multiple 
            ' columns, adjusting for the horizontal scrolling position 
            ' and the current row height, and displaying only whole
            ' lines of text.
            Dim textArea As Rectangle = rowBounds
            textArea.X -= Me.dataGridView1.HorizontalScrollingOffset
            textArea.Width += Me.dataGridView1.HorizontalScrollingOffset
            textArea.Y += rowBounds.Height - e.InheritedRowStyle.Padding.Bottom
            textArea.Height -= rowBounds.Height - e.InheritedRowStyle.Padding.Bottom
            textArea.Height = (textArea.Height \ e.InheritedRowStyle.Font.Height) * _
                e.InheritedRowStyle.Font.Height

            ' Calculate the portion of the text area that needs painting.
            Dim clip As RectangleF = textArea
            clip.Width -= Me.dataGridView1.RowHeadersWidth + 1 - clip.X
            clip.X = Me.dataGridView1.RowHeadersWidth + 1
            Dim oldClip As RectangleF = e.Graphics.ClipBounds
            e.Graphics.SetClip(clip)

            ' Draw the content that spans multiple columns.
            e.Graphics.DrawString(text, e.InheritedRowStyle.Font, forebrush, _
                textArea)

            e.Graphics.SetClip(oldClip)
        End If
    Finally
        forebrush.Dispose()
    End Try

    If Me.dataGridView1.CurrentCellAddress.Y = e.RowIndex Then
        ' Paint the focus rectangle.
        e.DrawFocus(rowBounds, True)
    End If

End Sub 'dataGridView1_RowPostPaint

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

Community Additions

ADD
Show:
© 2014 Microsoft