DataGridView.SortOrder Properti

Definisi

Ruang nama:

System.Windows.Forms

Rakitan:

System.Windows.Forms.dll

Mendapatkan nilai yang menunjukkan apakah item dalam kontrol diurutkan DataGridView dalam urutan naik atau turun, atau tidak diurutkan.

public:
 property System::Windows::Forms::SortOrder SortOrder { System::Windows::Forms::SortOrder get(); };

[System.ComponentModel.Browsable(false)]
public System.Windows.Forms.SortOrder SortOrder { get; }

[<System.ComponentModel.Browsable(false)>]
member this.SortOrder : System.Windows.Forms.SortOrder

Public ReadOnly Property SortOrder As SortOrder

Nilai Properti

SortOrder

Salah SortOrder satu nilai.

Atribut

BrowsableAttribute

Contoh

Contoh kode berikut menunjukkan cara menggunakan SortOrder properti dalam pengurutan terprogram.

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

Keterangan

Properti ini digunakan untuk menentukan glyph pengurutan mana yang muncul ketika kolom yang ditentukan oleh SortedColumn properti memiliki SortMode nilai Automaticproperti . Saat kolom memiliki SortMode nilai Programmaticproperti , Anda harus menampilkan dan menyembunyikan glyph pengurutan sendiri melalui SortGlyphDirection properti . Saat kolom memiliki SortMode nilai NotSortableproperti , Anda dapat menampilkan glyph pengurutan, tetapi spasi tidak dicadangkan untuk kolom jika kolom diubah ukurannya secara otomatis.

Catatan

Nilai properti ini tidak bermakna saat Anda mengurutkan kontrol menggunakan pengurutan kustom. Untuk informasi selengkapnya tentang pengurutan kustom, lihat Sort metode dan SortCompare peristiwa.

Lihat juga

• Kontrol DataGridView (Formulir Windows)