DataGridViewRowPrePaintEventArgs Clase

Definición

public ref class DataGridViewRowPrePaintEventArgs : System::ComponentModel::HandledEventArgs

public class DataGridViewRowPrePaintEventArgs : System.ComponentModel.HandledEventArgs

type DataGridViewRowPrePaintEventArgs = class
    inherit HandledEventArgs

Public Class DataGridViewRowPrePaintEventArgs
Inherits HandledEventArgs

Herencia

Object

EventArgs

HandledEventArgs

DataGridViewRowPrePaintEventArgs

Ejemplos

En el ejemplo de código siguiente se muestra cómo controlar el RowPrePaint evento para dibujar un fondo personalizado para las celdas seleccionadas. Este ejemplo de código forma parte de un ejemplo más grande que se proporciona en 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);
        }
    }
}

' Paints the custom selection background for selected rows.
Sub dataGridView1_RowPrePaint(ByVal sender As Object, _
    ByVal e As DataGridViewRowPrePaintEventArgs) _
    Handles dataGridView1.RowPrePaint

    ' Do not automatically paint the focus rectangle.
    e.PaintParts = e.PaintParts And Not DataGridViewPaintParts.Focus

    ' Determine whether the cell should be painted with the 
    ' custom selection background.
    If (e.State And DataGridViewElementStates.Selected) = _
        DataGridViewElementStates.Selected Then

        ' 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)

        ' Paint the custom selection background.
        Dim backbrush As New _
            System.Drawing.Drawing2D.LinearGradientBrush(rowBounds, _
            Me.dataGridView1.DefaultCellStyle.SelectionBackColor, _
            e.InheritedRowStyle.ForeColor, _
            System.Drawing.Drawing2D.LinearGradientMode.Horizontal)
        Try
            e.Graphics.FillRectangle(backbrush, rowBounds)
        Finally
            backbrush.Dispose()
        End Try
    End If

End Sub

Comentarios

El RowPrePaint evento se produce antes de que se pinte una fila en un DataGridView control . RowPrePaint permite ajustar manualmente la apariencia de la fila antes de que se pinte cualquiera de las celdas de la fila. Esto resulta útil si desea personalizar la fila, por ejemplo, para generar una fila en la que el contenido de una columna abarca varias columnas. Use las propiedades de DataGridViewRowPrePaintEventArgs para obtener la configuración de la fila sin tener acceso directo a la fila en DataGridView.

Constructores

Propiedades

Métodos

Se aplica a

Consulte también

• DataGridView
• RowPrePaint