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DataGridViewRowPrePaintEventArgs Class

Provides data for the RowPrePaint event.

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

public class DataGridViewRowPrePaintEventArgs : HandledEventArgs
public class DataGridViewRowPrePaintEventArgs extends HandledEventArgs
public class DataGridViewRowPrePaintEventArgs extends HandledEventArgs
Not applicable.

The RowPrePaint event occurs before a row is painted on a DataGridView control. RowPrePaint enables you to manually adjust the appearance of the row before any of the cells in the row are painted. This is useful if you want to customize the row, such as to produce a row where the content of one column spans multiple columns. Use the properties in DataGridViewRowPrePaintEventArgs to get the settings of the row without directly accessing the row in the DataGridView.

The following code example demonstrates how to handle the RowPrePaint event to draw a custom background for selected cells. This code example is part of a larger example provided in How to: Customize the Appearance of Rows in the Windows Forms DataGridView Control.

// Paints the custom selection background for selected rows.
void dataGridView1_RowPrePaint(object sender,
        DataGridViewRowPrePaintEventArgs e)
{
    // Do not automatically paint the focus rectangle.
    e.PaintParts &= ~DataGridViewPaintParts.Focus;

    // Determine whether the cell should be painted
    // with the custom selection background.
    if ((e.State & DataGridViewElementStates.Selected) ==
                DataGridViewElementStates.Selected)
    {
        // Calculate the bounds of the row.
        Rectangle rowBounds = new Rectangle(
            this.dataGridView1.RowHeadersWidth, e.RowBounds.Top,
            this.dataGridView1.Columns.GetColumnsWidth(
                DataGridViewElementStates.Visible) -
            this.dataGridView1.HorizontalScrollingOffset + 1,
            e.RowBounds.Height);

        // Paint the custom selection background.
        using (Brush backbrush =
            new System.Drawing.Drawing2D.LinearGradientBrush(rowBounds,
                this.dataGridView1.DefaultCellStyle.SelectionBackColor,
                e.InheritedRowStyle.ForeColor,
                System.Drawing.Drawing2D.LinearGradientMode.Horizontal))
        {
            e.Graphics.FillRectangle(backbrush, rowBounds);
        }
    }
}

System.Object
   System.EventArgs
     System.ComponentModel.HandledEventArgs
      System.Windows.Forms.DataGridViewRowPrePaintEventArgs
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, 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

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