DataGridView.SortedColumn Propriété

Définition

Obtient la colonne selon laquelle le contenu du DataGridView est actuellement trié.Gets the column by which the DataGridView contents are currently sorted.

public:
 property System::Windows::Forms::DataGridViewColumn ^ SortedColumn { System::Windows::Forms::DataGridViewColumn ^ get(); };
[System.ComponentModel.Browsable(false)]
public System.Windows.Forms.DataGridViewColumn SortedColumn { get; }
member this.SortedColumn : System.Windows.Forms.DataGridViewColumn
Public ReadOnly Property SortedColumn As DataGridViewColumn

Valeur de propriété

DataGridViewColumn selon lequel le contenu du DataGridView est actuellement trié.The DataGridViewColumn by which the DataGridView contents are currently sorted.

Attributs

Exemples

L’exemple de code suivant montre comment utiliser la propriété SortedColumn dans un tri par programmation.The following code example demonstrates how to use the SortedColumn property in a programmatic sort.

private void sortButton_Click(object sender, System.EventArgs e)
{
    // Check which column is selected, otherwise set NewColumn to null.
    DataGridViewColumn newColumn =
        dataGridView1.Columns.GetColumnCount(
        DataGridViewElementStates.Selected) == 1 ?
        dataGridView1.SelectedColumns[0] : null;

    DataGridViewColumn oldColumn = dataGridView1.SortedColumn;
    ListSortDirection direction;

    // If oldColumn is null, then the DataGridView is not currently sorted.
    if (oldColumn != null)
    {
        // Sort the same column again, reversing the SortOrder.
        if (oldColumn == newColumn &&
            dataGridView1.SortOrder == SortOrder.Ascending)
        {
            direction = ListSortDirection.Descending;
        }
        else
        {
            // Sort a new column and remove the old SortGlyph.
            direction = ListSortDirection.Ascending;
            oldColumn.HeaderCell.SortGlyphDirection = SortOrder.None;
        }
    }
    else
    {
        direction = ListSortDirection.Ascending;
    }

    // If no column has been selected, display an error dialog  box.
    if (newColumn == null)
    {
        MessageBox.Show("Select a single column and try again.",
            "Error: Invalid Selection", MessageBoxButtons.OK,
            MessageBoxIcon.Error);
    }
    else
    {
        dataGridView1.Sort(newColumn, direction);
        newColumn.HeaderCell.SortGlyphDirection =
            direction == ListSortDirection.Ascending ?
            SortOrder.Ascending : SortOrder.Descending;
    }
}
Private Sub SortButton_Click(ByVal sender As Object, _
    ByVal e As EventArgs) Handles sortButton.Click

    ' Check which column is selected, otherwise set NewColumn to Nothing.
    Dim newColumn As DataGridViewColumn
    If dataGridView1.Columns.GetColumnCount(DataGridViewElementStates _
        .Selected) = 1 Then
        newColumn = dataGridView1.SelectedColumns(0)
    Else
        newColumn = Nothing
    End If

    Dim oldColumn As DataGridViewColumn = dataGridView1.SortedColumn
    Dim direction As ListSortDirection

    ' If oldColumn is null, then the DataGridView is not currently sorted.
    If oldColumn IsNot Nothing Then

        ' Sort the same column again, reversing the SortOrder.
        If oldColumn Is newColumn AndAlso dataGridView1.SortOrder = _
            SortOrder.Ascending Then
            direction = ListSortDirection.Descending
        Else

            ' Sort a new column and remove the old SortGlyph.
            direction = ListSortDirection.Ascending
            oldColumn.HeaderCell.SortGlyphDirection = SortOrder.None
        End If
    Else
        direction = ListSortDirection.Ascending
    End If


    ' If no column has been selected, display an error dialog  box.
    If newColumn Is Nothing Then
        MessageBox.Show("Select a single column and try again.", _
            "Error: Invalid Selection", MessageBoxButtons.OK, _
            MessageBoxIcon.Error)
    Else
        dataGridView1.Sort(newColumn, direction)
        If direction = ListSortDirection.Ascending Then
            newColumn.HeaderCell.SortGlyphDirection = SortOrder.Ascending
        Else
            newColumn.HeaderCell.SortGlyphDirection = SortOrder.Descending
        End If
    End If

End Sub

Remarques

Si le DataGridView n’est pas trié, cette propriété retourne null.If the DataGridView is not sorted, this property will return null.

Quand la colonne indiquée par cette propriété a une SortMode valeur de propriété de DataGridViewColumnSortMode.Automatic, elle affiche un glyphe de tri basé sur la valeur de la propriété SortOrder.When the column indicated by this property has a SortMode property value of DataGridViewColumnSortMode.Automatic, it will display a sorting glyph based on the value of the SortOrder property.

Lorsque la colonne a une valeur de propriété SortMode de DataGridViewColumnSortMode.Programmatic, vous devez afficher le glyphe de tri vous-même via la propriété DataGridViewColumnHeaderCell.SortGlyphDirection.When the column has a SortMode property value of DataGridViewColumnSortMode.Programmatic, you must display the sorting glyph yourself through the DataGridViewColumnHeaderCell.SortGlyphDirection property.

Notes

La valeur de cette propriété n’est pas significative lorsque vous triez le contrôle à l’aide d’un tri personnalisé.The value of this property is not meaningful when you sort the control using custom sorting. Pour plus d’informations sur le tri personnalisé, consultez la méthode Sort(IComparer) et l’événement SortCompare.For more information about custom sorting, see the Sort(IComparer) method and the SortCompare event.

S’applique à

Voir aussi