方法 : Windows フォーム DataGridView コントロールの並べ替え機能をカスタマイズする

[アーティクル]
05/04/2023

DataGridView コントロールは、自動並べ替え機能を提供しますが、ニーズに応じて、並べ替え操作をカスタマイズすることが必要な場合があります。たとえば、プログラムによる並べ替え機能を使用して、代替のユーザーインターフェイス (UI) を作成することができます。また、複数の列の並べ替えなど、並べ替え柔軟性を高めるために、SortCompare イベントを処理したり、Sort メソッドの Sort(IComparer) のオーバーロードを呼び出したりすることができます。

次のコード例は、カスタムの並べ替えの 3 つの方法を示します。詳細については、「Windows フォーム DataGridView コントロール内の列の並べ替えモード」を参照してください。

プログラムによる並べ替え

次のコード例は、SortOrder プロパティと SortedColumn プロパティを使用して並べ替えの方向を判断し、SortGlyphDirection プロパティを使用してナラベカエグリフを手動で設定する、プログラムによる並べ替えを示しています。 Sort メソッドの Sort(DataGridViewColumn,ListSortDirection) のオーバーロードは 1 つの列のみでのデータの並べ替えに使用します。

using System;
using System.ComponentModel;
using System.Windows.Forms;

class Form1 : Form
{
    private Button sortButton = new Button();
    private DataGridView dataGridView1 = new DataGridView();

    // Initializes the form.
    // You can replace this code with designer-generated code.
    public Form1()
    {
        dataGridView1.Dock = DockStyle.Fill;
        dataGridView1.AllowUserToAddRows = false;
        dataGridView1.SelectionMode =
            DataGridViewSelectionMode.ColumnHeaderSelect;
        dataGridView1.MultiSelect = false;

        sortButton.Dock = DockStyle.Bottom;
        sortButton.Text = "Sort";

        Controls.Add(dataGridView1);
        Controls.Add(sortButton);
        Text = "DataGridView programmatic sort demo";
    }

    // Establishes the main entry point for the application.
    [STAThreadAttribute()]
    static void Main()
    {
        Application.EnableVisualStyles();
        Application.Run(new Form1());
    }

    // Populates the DataGridView.
    // Replace this with your own code to populate the DataGridView.
    public void PopulateDataGridView()
    {
        // Add columns to the DataGridView.
        dataGridView1.ColumnCount = 2;
        dataGridView1.Columns[0].HeaderText = "Last Name";
        dataGridView1.Columns[1].HeaderText = "City";
        // Put the new columns into programmatic sort mode
        dataGridView1.Columns[0].SortMode =
            DataGridViewColumnSortMode.Programmatic;
        dataGridView1.Columns[1].SortMode =
            DataGridViewColumnSortMode.Programmatic;

        // Populate the DataGridView.
        dataGridView1.Rows.Add(new string[] { "Parker", "Seattle" });
        dataGridView1.Rows.Add(new string[] { "Watson", "Seattle" });
        dataGridView1.Rows.Add(new string[] { "Osborn", "New York" });
        dataGridView1.Rows.Add(new string[] { "Jameson", "New York" });
        dataGridView1.Rows.Add(new string[] { "Brock", "New Jersey" });
    }

    protected override void OnLoad(EventArgs e)
    {
        sortButton.Click += new EventHandler(sortButton_Click);

        PopulateDataGridView();
        base.OnLoad(e);
    }

    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;
        }
    }
}

Imports System.ComponentModel
Imports System.Windows.Forms

Public Class Form1
    Inherits Form

    Private WithEvents sortButton As New Button()
    Private WithEvents dataGridView1 As New DataGridView()

    ' Initializes the form.
    ' You can replace this code with designer-generated code.
    Public Sub New()
        With dataGridView1
            .Dock = DockStyle.Fill
            .AllowUserToAddRows = False
            .SelectionMode = DataGridViewSelectionMode.ColumnHeaderSelect
            .MultiSelect = False
        End With

        sortButton.Dock = DockStyle.Bottom
        sortButton.Text = "Sort"
 
        Controls.Add(dataGridView1)
        Controls.Add(sortButton)
        Text = "DataGridView programmatic sort demo"

        PopulateDataGridView()
    End Sub

    ' Establish the main entry point for the application.
    <STAThreadAttribute()> _
    Public Shared Sub Main()
        Application.Run(New Form1())
    End Sub

    ' Populates the DataGridView.
    ' Replace this with your own code to populate the DataGridView.
    Public Sub PopulateDataGridView()

        ' Add columns to the DataGridView.
        dataGridView1.ColumnCount = 2
        dataGridView1.Columns(0).HeaderText = "Last Name"
        dataGridView1.Columns(1).HeaderText = "City"
        ' Put the new columns into programmatic sort mode
        dataGridView1.Columns(0).SortMode = _
            DataGridViewColumnSortMode.Programmatic
        dataGridView1.Columns(1).SortMode = _
            DataGridViewColumnSortMode.Programmatic


        ' Populate the DataGridView.
        dataGridView1.Rows.Add(New String() {"Parker", "Seattle"})
        dataGridView1.Rows.Add(New String() {"Watson", "Seattle"})
        dataGridView1.Rows.Add(New String() {"Osborn", "New York"})
        dataGridView1.Rows.Add(New String() {"Jameson", "New York"})
        dataGridView1.Rows.Add(New String() {"Brock", "New Jersey"})
    End Sub

    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

End Class

SortCompare イベントを使用したカスタムの並べ替え

次のコード例は、SortCompare イベントハンドラーを使用したカスタムの並べ替えを示しています。選択した DataGridViewColumn が並べ替えられて、列に重複する値がある場合は、最終的な順序を決定する、ID 列が使用されます。

#region Using directives

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Windows.Forms;

#endregion
class Form1 : Form
{
    private DataGridView dataGridView1 = new DataGridView();

    // Establish the main entry point for the application.
    [STAThreadAttribute()]
    static void Main()
    {
        Application.EnableVisualStyles();
        Application.Run(new Form1());
    }

    public Form1()
    {
        // Initialize the form.
        // This code can be replaced with designer generated code.
        dataGridView1.AllowUserToAddRows = false;
        dataGridView1.Dock = DockStyle.Fill;
        dataGridView1.SortCompare += new DataGridViewSortCompareEventHandler(
            this.dataGridView1_SortCompare);
        Controls.Add(this.dataGridView1);
        this.Text = "DataGridView.SortCompare demo";

        PopulateDataGridView();
    }

    // Replace this with your own population code.
    public void PopulateDataGridView()
    {
        // Add columns to the DataGridView.
        dataGridView1.ColumnCount = 3;

        // Set the properties of the DataGridView columns.
        dataGridView1.Columns[0].Name = "ID";
        dataGridView1.Columns[1].Name = "Name";
        dataGridView1.Columns[2].Name = "City";
        dataGridView1.Columns["ID"].HeaderText = "ID";
        dataGridView1.Columns["Name"].HeaderText = "Name";
        dataGridView1.Columns["City"].HeaderText = "City";

        // Add rows of data to the DataGridView.
        dataGridView1.Rows.Add(new string[] { "1", "Parker", "Seattle" });
        dataGridView1.Rows.Add(new string[] { "2", "Parker", "New York" });
        dataGridView1.Rows.Add(new string[] { "3", "Watson", "Seattle" });
        dataGridView1.Rows.Add(new string[] { "4", "Jameson", "New Jersey" });
        dataGridView1.Rows.Add(new string[] { "5", "Brock", "New York" });
        dataGridView1.Rows.Add(new string[] { "6", "Conner", "Portland" });

        // Autosize the columns.
        dataGridView1.AutoResizeColumns();
    }

    private void dataGridView1_SortCompare(object sender,
        DataGridViewSortCompareEventArgs e)
    {
        // Try to sort based on the cells in the current column.
        e.SortResult = System.String.Compare(
            e.CellValue1.ToString(), e.CellValue2.ToString());

        // If the cells are equal, sort based on the ID column.
        if (e.SortResult == 0 && e.Column.Name != "ID")
        {
            e.SortResult = System.String.Compare(
                dataGridView1.Rows[e.RowIndex1].Cells["ID"].Value.ToString(),
                dataGridView1.Rows[e.RowIndex2].Cells["ID"].Value.ToString());
        }
        e.Handled = true;
    }
}

Imports System.Windows.Forms

Public Class Form1
    Inherits Form

    Private WithEvents DataGridView1 As New DataGridView()

    ' Establish the main entry point for the application.
    <STAThreadAttribute()> _
    Public Shared Sub Main()
        Application.Run(New Form1())
    End Sub

    Public Sub New()
        ' Initialize the form.
        ' This code can be replaced with designer generated code.
        Me.DataGridView1.AllowUserToAddRows = False
        Me.DataGridView1.Dock = DockStyle.Fill
        Me.Controls.Add(Me.DataGridView1)
        Me.Text = "DataGridView.SortCompare demo"

        Me.PopulateDataGridView()
    End Sub

    '<snippet20>'
    ' Replace this with your own population code.
    Private Sub PopulateDataGridView()
        With Me.DataGridView1
            ' Add columns to the DataGridView.
            .ColumnCount = 3

            ' Set the properties of the DataGridView columns.
            .Columns(0).Name = "ID"
            .Columns(1).Name = "Name"
            .Columns(2).Name = "City"
            .Columns("ID").HeaderText = "ID"
            .Columns("Name").HeaderText = "Name"
            .Columns("City").HeaderText = "City"
        End With

        ' Add rows of data to the DataGridView.
        With Me.DataGridView1.Rows
            .Add(New String() {"1", "Parker", "Seattle"})
            .Add(New String() {"2", "Parker", "New York"})
            .Add(New String() {"3", "Watson", "Seattle"})
            .Add(New String() {"4", "Jameson", "New Jersey"})
            .Add(New String() {"5", "Brock", "New York"})
            .Add(New String() {"6", "Conner", "Portland"})
        End With

        ' Autosize the columns.
        Me.DataGridView1.AutoResizeColumns()
 
    End Sub

    Private Sub DataGridView1_SortCompare( _
        ByVal sender As Object, ByVal e As DataGridViewSortCompareEventArgs) _
        Handles DataGridView1.SortCompare

        ' Try to sort based on the contents of the cell in the current column.
        e.SortResult = System.String.Compare(e.CellValue1.ToString(), _
            e.CellValue2.ToString())

        ' If the cells are equal, sort based on the ID column.
        If (e.SortResult = 0) AndAlso Not (e.Column.Name = "ID") Then
            e.SortResult = System.String.Compare( _
                DataGridView1.Rows(e.RowIndex1).Cells("ID").Value.ToString(), _
                DataGridView1.Rows(e.RowIndex2).Cells("ID").Value.ToString())
        End If

        e.Handled = True

    End Sub
End Class

IComparer インターフェイスを使用したカスタムの並べ替え

次のコード例は、複数列の並べ替えを実行する IComparer インターフェイスの実装を取得する Sort メソッドの Sort(IComparer) のオーバーロードを使用したカスタムの並べ替えを示しています。

#region Using directives

using System;
using System.Drawing;
using System.Windows.Forms;

#endregion

class Form1 : Form
{
    private DataGridView DataGridView1 = new DataGridView();
    private FlowLayoutPanel FlowLayoutPanel1 = new FlowLayoutPanel();
    private Button Button1 = new Button();
    private RadioButton RadioButton1 = new RadioButton();
    private RadioButton RadioButton2 = new RadioButton();

    // Establish the main entry point for the application.
    [STAThreadAttribute()]
    public static void Main()
    {
        Application.Run(new Form1());
    }

    public Form1()
    {
        // Initialize the form.
        // This code can be replaced with designer generated code.
        AutoSize = true;
        Text = "DataGridView IComparer sort demo";

        FlowLayoutPanel1.FlowDirection = FlowDirection.TopDown;
        FlowLayoutPanel1.Location = new System.Drawing.Point( 304, 0 );
        FlowLayoutPanel1.AutoSize = true;

        FlowLayoutPanel1.Controls.Add( RadioButton1 );
        FlowLayoutPanel1.Controls.Add( RadioButton2 );
        FlowLayoutPanel1.Controls.Add( Button1 );

        Button1.Text = "Sort";
        RadioButton1.Text = "Ascending";
        RadioButton2.Text = "Descending";
        RadioButton1.Checked = true;

        Controls.Add( FlowLayoutPanel1 );
        Controls.Add( DataGridView1 );
    }

    protected override void OnLoad( EventArgs e )
    {
        PopulateDataGridView();
        Button1.Click += new EventHandler(Button1_Click);

        base.OnLoad( e );
    }

    // Replace this with your own code to populate the DataGridView.
    private void PopulateDataGridView()
    {

        DataGridView1.Size = new Size(300, 300);

        // Add columns to the DataGridView.
        DataGridView1.ColumnCount = 2;

        // Set the properties of the DataGridView columns.
        DataGridView1.Columns[0].Name = "First";
        DataGridView1.Columns[1].Name = "Last";
        DataGridView1.Columns["First"].HeaderText = "First Name";
        DataGridView1.Columns["Last"].HeaderText = "Last Name";
        DataGridView1.Columns["First"].SortMode =
            DataGridViewColumnSortMode.Programmatic;
        DataGridView1.Columns["Last"].SortMode =
            DataGridViewColumnSortMode.Programmatic;

        // Add rows of data to the DataGridView.
        DataGridView1.Rows.Add(new string[] { "Peter", "Parker" });
        DataGridView1.Rows.Add(new string[] { "James", "Jameson" });
        DataGridView1.Rows.Add(new string[] { "May", "Parker" });
        DataGridView1.Rows.Add(new string[] { "Mary", "Watson" });
        DataGridView1.Rows.Add(new string[] { "Eddie", "Brock" });
    }

    private void Button1_Click( object sender, EventArgs e )
    {
        if ( RadioButton1.Checked == true )
        {
            DataGridView1.Sort( new RowComparer( SortOrder.Ascending ) );
        }
        else if ( RadioButton2.Checked == true )
        {
            DataGridView1.Sort( new RowComparer( SortOrder.Descending ) );
        }
    }

    private class RowComparer : System.Collections.IComparer
    {
        private static int sortOrderModifier = 1;

        public RowComparer(SortOrder sortOrder)
        {
            if (sortOrder == SortOrder.Descending)
            {
                sortOrderModifier = -1;
            }
            else if (sortOrder == SortOrder.Ascending)
            {
                sortOrderModifier = 1;
            }
        }

        public int Compare(object x, object y)
        {
            DataGridViewRow DataGridViewRow1 = (DataGridViewRow)x;
            DataGridViewRow DataGridViewRow2 = (DataGridViewRow)y;

            // Try to sort based on the Last Name column.
            int CompareResult = System.String.Compare(
                DataGridViewRow1.Cells[1].Value.ToString(),
                DataGridViewRow2.Cells[1].Value.ToString());

            // If the Last Names are equal, sort based on the First Name.
            if ( CompareResult == 0 )
            {
                CompareResult = System.String.Compare(
                    DataGridViewRow1.Cells[0].Value.ToString(),
                    DataGridViewRow2.Cells[0].Value.ToString());
            }
            return CompareResult * sortOrderModifier;
        }
    }
}

Imports System.Drawing
Imports System.Windows.Forms

Public Class Form1
    Inherits Form

    Private WithEvents DataGridView1 As New DataGridView()
    Private FlowLayoutPanel1 As New FlowLayoutPanel()
    Private WithEvents Button1 As New Button()
    Private RadioButton1 As New RadioButton()
    Private RadioButton2 As New RadioButton()

    ' Establish the main entry point for the application.
    <STAThreadAttribute()> _
    Public Shared Sub Main()
        Application.Run(New Form1())
    End Sub

    Public Sub New()
        ' Initialize the form.
        ' This code can be replaced with designer generated code.
        AutoSize = True
        Text = "DataGridView IComparer sort demo"

        FlowLayoutPanel1.FlowDirection = FlowDirection.TopDown
        FlowLayoutPanel1.Location = New System.Drawing.Point(304, 0)
        FlowLayoutPanel1.AutoSize = True

        FlowLayoutPanel1.Controls.Add(RadioButton1)
        FlowLayoutPanel1.Controls.Add(RadioButton2)
        FlowLayoutPanel1.Controls.Add(Button1)

        Button1.Text = "Sort"
        RadioButton1.Text = "Ascending"
        RadioButton2.Text = "Descending"
        RadioButton1.Checked = True

        Controls.Add(FlowLayoutPanel1)
        Controls.Add(DataGridView1)

        PopulateDataGridView()
    End Sub

    ' Replace this with your own code to populate the DataGridView.
    Private Sub PopulateDataGridView()

        DataGridView1.Size = New Size(300, 300)

        ' Add columns to the DataGridView.
        DataGridView1.ColumnCount = 2

        ' Set the properties of the DataGridView columns.
        DataGridView1.Columns(0).Name = "First"
        DataGridView1.Columns(1).Name = "Last"
        DataGridView1.Columns("First").HeaderText = "First Name"
        DataGridView1.Columns("Last").HeaderText = "Last Name"
        DataGridView1.Columns("First").SortMode = _
            DataGridViewColumnSortMode.Programmatic
        DataGridView1.Columns("Last").SortMode = _
            DataGridViewColumnSortMode.Programmatic

        ' Add rows of data to the DataGridView.
        DataGridView1.Rows.Add(New String() {"Peter", "Parker"})
        DataGridView1.Rows.Add(New String() {"James", "Jameson"})
        DataGridView1.Rows.Add(New String() {"May", "Parker"})
        DataGridView1.Rows.Add(New String() {"Mary", "Watson"})
        DataGridView1.Rows.Add(New String() {"Eddie", "Brock"})
    End Sub

    Private Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs) _
    Handles Button1.Click
        If RadioButton1.Checked = True Then
            DataGridView1.Sort(New RowComparer(SortOrder.Ascending))
        ElseIf RadioButton2.Checked = True Then
            DataGridView1.Sort(New RowComparer(SortOrder.Descending))
        End If
    End Sub

    Private Class RowComparer
        Implements System.Collections.IComparer

        Private sortOrderModifier As Integer = 1

        Public Sub New(ByVal sortOrder As SortOrder)
            If sortOrder = sortOrder.Descending Then
                sortOrderModifier = -1
            ElseIf sortOrder = sortOrder.Ascending Then

                sortOrderModifier = 1
            End If
        End Sub

        Public Function Compare(ByVal x As Object, ByVal y As Object) As Integer _
            Implements System.Collections.IComparer.Compare

            Dim DataGridViewRow1 As DataGridViewRow = CType(x, DataGridViewRow)
            Dim DataGridViewRow2 As DataGridViewRow = CType(y, DataGridViewRow)

            ' Try to sort based on the Last Name column.
            Dim CompareResult As Integer = System.String.Compare( _
                DataGridViewRow1.Cells(1).Value.ToString(), _
                DataGridViewRow2.Cells(1).Value.ToString())

            ' If the Last Names are equal, sort based on the First Name.
            If CompareResult = 0 Then
                CompareResult = System.String.Compare( _
                    DataGridViewRow1.Cells(0).Value.ToString(), _
                    DataGridViewRow2.Cells(0).Value.ToString())
            End If
            Return CompareResult * sortOrderModifier
        End Function
    End Class
End Class

コードのコンパイル

これらの例には以下のものが必要です。

System、System.Drawing、および System.Windows.Forms の各アセンブリへの参照。

方法 : Windows フォーム DataGridView コントロールの並べ替え機能をカスタマイズする

プログラムによる並べ替え

SortCompare イベントを使用したカスタムの並べ替え

IComparer インターフェイスを使用したカスタムの並べ替え

コードのコンパイル

関連項目

フィードバック

その他のリソース