DataGridViewColumn クラスとは何？わかりやすく解説 Weblio辞書

.NET Framework クラスライブラリリファレンス

索引トップ用語の索引ランキング

DataGridViewColumn クラス

メモ : このクラスは、.NET Framework version 2.0 で新しく追加されたものです。

DataGridView コントロールの列を表します。

名前空間: System.Windows.Forms
アセンブリ: System.Windows.Forms (system.windows.forms.dll 内)
構文

Visual Basic (宣言)

Public Class DataGridViewColumn
    Inherits DataGridViewBand
    Implements IComponent, IDisposable

Visual Basic (使用法)

Dim instance As DataGridViewColumn

public class DataGridViewColumn : DataGridViewBand,
 IComponent, IDisposable

C++

public ref class DataGridViewColumn : public
 DataGridViewBand, IComponent, IDisposable

public class DataGridViewColumn extends DataGridViewBand
 implements IComponent, IDisposable

JScript

public class DataGridViewColumn extends
 DataGridViewBand implements IComponent, IDisposable

解説

DataGridViewColumn クラスは DataGridView コントロールの論理的な列を表します。列を取得するには、コントロールの Columns コレクションを使用します。

DataGridView のセルの実際のコレクションが格納された DataGridViewRow とは異なり、DataGridViewColumn は、列の幅やセルスタイルなど、主に列のユーザーインターフェイス (UI) の外観と動作を調整するために使用されます。セルスタイルの詳細については、「Windows フォーム DataGridView コントロールでのセルのスタイル」を参照してください。

DataGridViewColumn から派生した型は通常、CellTemplate プロパティを、DataGridViewCell クラスから派生した関連する型の新しいインスタンスに初期化します。個々のセルの外観や動作に関係する列プロパティは、テンプレートセルの対応するプロパティのラッパーです。列に対してこれらのプロパティの 1 つを変更すると、セルテンプレートの値、および列のすべてのセルの値が自動的に変更されます。各セルの指定した値をオーバーライドするには、列の値を設定してからセルの値を設定します。

継承時の注意 DataGridViewColumn からクラスを派生させて新しいプロパティを追加する場合は、Clone メソッドをオーバーライドして、クローン操作時に新しいプロパティをコピーする必要があります。また、基本クラスの Clone メソッドも呼び出して、基本クラスのプロパティが新しいセルにコピーされるようにする必要があります。

使用例

DataGridView と一連のボタンを含んだ Windows フォームを作成するコード例を次に示します。各ボタンのラベルには、最初の列と最後の列の交換 (DisplayIndex プロパティを使用) や列ヘッダーのテキストの変更 (HeaderText プロパティを使用) など、DataGridViewColumn プロパティに関係する操作が記述されています。ボタンをクリックすると、DataGridViewColumn の関連付けられたプロパティが変更されます。

Visual Basic

Imports System.Windows.Forms
Imports System.Drawing

Public Class DataGridViewColumnDemo
    Inherits Form

#Region "set up form"
    Public Sub New()
        InitializeComponent()

        AddButton(Button1, "Reset")
        AddButton(Button2, "Change Column 3 Header")
        AddButton(Button3, "Change Meatloaf Recipe")
        AddAdditionalButtons()
    End Sub

    Friend WithEvents dataGridView As
 DataGridView
    Friend WithEvents Button1 As
 Button = New Button()
    Friend WithEvents Button2 As
 Button = New Button()
    Friend WithEvents Button3 As
 Button = New Button()
    Friend WithEvents Button4 As
 Button = New Button()
    Friend WithEvents Button5 As
 Button = New Button()
    Friend WithEvents Button6 As
 Button = New Button()
    Friend WithEvents Button7 As
 Button = New Button()
    Friend WithEvents Button8 As
 Button = New Button()
    Friend WithEvents Button9 As
 Button = New Button()
    Friend WithEvents Button10 As
 Button = New Button()
    Friend WithEvents FlowLayoutPanel1 As
 FlowLayoutPanel _
        = New FlowLayoutPanel()

    Private Sub InitializeComponent()
        FlowLayoutPanel1.Location = New Point(454, 0)
        FlowLayoutPanel1.AutoSize = True
        FlowLayoutPanel1.FlowDirection = FlowDirection.TopDown
        FlowLayoutPanel1.Name = "flowlayoutpanel"
        ClientSize = New System.Drawing.Size(614, 360)
        Controls.Add(FlowLayoutPanel1)
        Text = Me.GetType.Name
        AutoSize = True
    End Sub
#End Region

#Region "set up DataGridView"
    Private thirdColumnHeader As String
 = "Main Ingredients"
    Private boringMeatloaf As String
 = "ground beef"
    Private boringMeatloafRanking As String
 = "*"
    Private boringRecipe As Boolean
    Private shortMode As Boolean

    Private Sub InitializeDataGridView(ByVal
 ignored As Object, _
    ByVal ignoredToo As EventArgs) Handles
 Me.Load

        dataGridView = New System.Windows.Forms.DataGridView
        Controls.Add(dataGridView)
        dataGridView.Size = New Size(300, 200)

        ' Create an unbound DataGridView by declaring a
        ' column count.
        dataGridView.ColumnCount = 4
        AdjustDataGridViewSizing()

        ' Set the column header style.
        Dim columnHeaderStyle As New
 DataGridViewCellStyle
        columnHeaderStyle.BackColor = Color.Aqua
        columnHeaderStyle.Font = _
            New Font("Verdana",
 10, FontStyle.Bold)
        dataGridView.ColumnHeadersDefaultCellStyle = _
            columnHeaderStyle

        ' Set the column header names.
        dataGridView.Columns(0).Name = "Recipe"
        dataGridView.Columns(1).Name = "Category"
        dataGridView.Columns(2).Name = thirdColumnHeader
        dataGridView.Columns(3).Name = "Rating"

        PostColumnCreation()

        ' Populate the rows.
        Dim row1 As String()
 = New String() _
            {"Meatloaf", "Main
 Dish", boringMeatloaf, _
            boringMeatloafRanking}
        Dim row2 As String()
 = New String() _
            {"Key Lime Pie", "Dessert",
 _
            "lime juice, evaporated milk", _
            "****"}
        Dim row3 As String()
 = New String() _
            {"Orange-Salsa Pork Chops", "Main
 Dish", _
            "pork chops, salsa, orange juice", "****"}
        Dim row4 As String()
 = New String() _
            {"Black Bean and Rice Salad", "Salad",
 _
            "black beans, brown rice", _
            "****"}
        Dim row5 As String()
 = New String() _
            {"Chocolate Cheesecake", "Dessert",
 "cream cheese", _
            "***"}
        Dim row6 As String()
 = New String() _
            {"Black Bean Dip", "Appetizer",
 _
            "black beans, sour cream", _
                "***"}
        Dim rows As Object()
 = New Object() {row1, row2, _
            row3, row4, row5, row6}

        Dim rowArray As String()
        For Each rowArray In
 rows
            dataGridView.Rows.Add(rowArray)
        Next

        shortMode = False
        boringRecipe = True
    End Sub

    Private Sub AddButton(ByVal
 button As Button, _
        ByVal buttonLabel As String)

        FlowLayoutPanel1.Controls.Add(button)
        button.TabIndex = FlowLayoutPanel1.Controls.Count
        button.Text = buttonLabel
        button.AutoSize = True
    End Sub

    Private Sub ResetToDisorder(ByVal
 sender As Object, _
        ByVal e As System.EventArgs) _
        Handles Button1.Click
        Controls.Remove(dataGridview)
        dataGridView.Dispose()
        InitializeDataGridView(Nothing, Nothing)
    End Sub

    Private Sub ChangeColumn3Header(ByVal
 sender As Object, _
        ByVal e As System.EventArgs) _
        Handles Button2.Click

        Toggle(shortMode)
        If shortMode Then dataGridView.Columns(2).HeaderText
 = _
            "S" _
            Else dataGridView.Columns(2).HeaderText = _
                thirdColumnHeader
    End Sub

    Private Shared Sub Toggle(ByRef
 toggleThis As Boolean)
        toggleThis = Not toggleThis
    End Sub

    Private Sub ChangeMeatloafRecipe(ByVal
 sender As Object, _
        ByVal e As System.EventArgs) _
        Handles Button3.Click

        Toggle(boringRecipe)
        If boringRecipe Then
            SetMeatloaf(boringMeatloaf, boringMeatloafRanking)
        Else
            Dim greatMeatloafRecipe As String
 = "1 lb. lean ground beef, " _
                & "1/2 cup bread crumbs, 1/4 cup ketchup,"
 _
                & "1/3 tsp onion powder, " _
                & "1 clove of garlic, 1/2 pack onion soup
 mix " _
                & " dash of your favorite BBQ Sauce"
            SetMeatloaf(greatMeatloafRecipe, "***")
        End If
    End Sub

    Private Sub SetMeatloaf(ByVal
 recipe As String, _
        ByVal rating As String)

        dataGridView.Rows(0).Cells(2).Value = recipe
        dataGridView.Rows(0).Cells(3).Value = rating
    End Sub
#End Region

#Region "demonstration code"
    Private Sub PostColumnCreation()
        AddContextLabel()
        AddCriteriaLabel()
        CustomizeCellsInThirdColumn()
        AddContextMenu()
        SetDefaultCellInFirstColumn()
        ToolTips()
    End Sub

    Private criteriaLabel As String
 = "Column 3 sizing criteria: "
    Private Sub AddCriteriaLabel()
        AddLabelToPanelIfNotAlreadyThere(criteriaLabel, _
            criteriaLabel & _
            dataGridView.Columns(2).AutoSizeMode.ToString() _
            & ".")
    End Sub

    Private Sub AddContextLabel()
        Dim labelName As String
 = "label"
        AddLabelToPanelIfNotAlreadyThere(labelName, _
            "Use shortcut menu to change cell color.")
    End Sub

    Private Sub AddLabelToPanelIfNotAlreadyThere(
 _
    ByVal labelName As String,
 _
    ByVal labelText As String)

        Dim label As Label
        If FlowLayoutPanel1.Controls(labelName) Is
 Nothing Then
            label = New Label()
            label.AutoSize = True
            label.Name = labelName
            label.BackColor = Color.Bisque
            FlowLayoutPanel1.Controls.Add(label)
        Else
            label = CType(FlowLayoutPanel1.Controls(labelName), Label)
        End If
        label.Text = labelText
    End Sub

    Private Sub CustomizeCellsInThirdColumn()

        Dim thirdColumn As Integer
 = 2
        Dim column As DataGridViewColumn =
 _
            dataGridView.Columns(thirdColumn)
        Dim cell As DataGridViewCell = _
            New DataGridViewTextBoxCell()

        cell.Style.BackColor = Color.Wheat
        column.CellTemplate = cell
    End Sub

    WithEvents toolStripItem1 As New
 ToolStripMenuItem()

    Private Sub AddContextMenu()
        toolStripItem1.Text = "Redden"
        Dim strip As New
 ContextMenuStrip()
        For Each column As
 DataGridViewColumn _
            In dataGridView.Columns()

            column.ContextMenuStrip = strip
            column.ContextMenuStrip.Items.Add(toolStripItem1)
        Next
    End Sub
    ' Change the cell's color.
    Private Sub toolStripItem1_Click(ByVal
 sender As Object, _
        ByVal args As EventArgs) _
        Handles toolStripItem1.Click

        dataGridView.Rows(mouseLocation.RowIndex) _
            .Cells(mouseLocation.ColumnIndex) _
            .Style.BackColor = Color.Red
    End Sub

    Private mouseLocation As DataGridViewCellEventArgs

    ' Deal with hovering over a cell.
    Private Sub dataGridView_CellMouseEnter(ByVal
 sender As Object, _
        ByVal location As DataGridViewCellEventArgs)
 _
        Handles DataGridView.CellMouseEnter

        mouseLocation = location
    End Sub

    Private Sub SetDefaultCellInFirstColumn()
        Dim firstColumn As DataGridViewColumn
 = _
            dataGridView.Columns(0)
        Dim cellStyle As DataGridViewCellStyle
 = _
            New DataGridViewCellStyle()
        cellStyle.BackColor = Color.Thistle

        firstColumn.DefaultCellStyle = cellStyle
    End Sub

    Private Sub ToolTips()
        Dim firstColumn As DataGridViewColumn
 = _
            dataGridView.Columns(0)
        Dim thirdColumn As DataGridViewColumn
 = _
            dataGridView.Columns(2)
        firstColumn.ToolTipText = _
            "This is column uses a default cell."
        thirdColumn.ToolTipText = _
            "This is column uses a template cell."
 _
            & " Changes to one cell's style
 changes them all."
    End Sub

    Private Sub AddAdditionalButtons()
        AddButton(Button4, "Set Minimum Width of Column Two")
        AddButton(Button5, "Set Width of Column One")
        AddButton(Button6, "Autosize Third Column")
        AddButton(Button7, "Add Thick Vertical Edge")
        AddButton(Button8, "Style and Number Columns")
        AddButton(Button9, "Change Column Header Text")
        AddButton(Button10, "Swap First and Last Columns")
    End Sub

    Private Sub AdjustDataGridViewSizing()
        dataGridView.ColumnHeadersHeightSizeMode = _
            DataGridViewColumnHeadersHeightSizeMode.AutoSize
    End Sub

    'Set the minimum width.
    Private Sub Button4_Click(ByVal
 sender As Object, _
        ByVal e As System.EventArgs) Handles
 Button4.Click

        Dim column As DataGridViewColumn =
 dataGridView.Columns(1)
        column.MinimumWidth = 40
    End Sub

    ' Set the width.
    Private Sub Button5_Click(ByVal
 sender As Object, _
        ByVal e As System.EventArgs) Handles
 Button5.Click

        Dim column As DataGridViewColumn =
 dataGridView.Columns(0)
        column.Width = 60
    End Sub

    ' AutoSize the third column.
    Private Sub Button6_Click(ByVal
 sender As Object, _
        ByVal e As System.EventArgs) Handles
 Button6.Click

        Dim column As DataGridViewColumn =
 dataGridView.Columns(2)
        column.AutoSizeMode = DataGridViewAutoSizeColumnMode.DisplayedCells
    End Sub

    ' Set the vertical edge.
    Private Sub Button7_Click(ByVal
 sender As Object, _
        ByVal e As System.EventArgs) Handles
 Button7.Click

        Dim thirdColumn As Integer
 = 2
        Dim column As DataGridViewColumn =
 _
            dataGridView.Columns(thirdColumn)
        column.DividerWidth = 10

    End Sub

    ' Style and number columns.
    Private Sub Button8_Click(ByVal
 sender As Object, _
        ByVal args As EventArgs) Handles
 Button8.Click

        Dim style As DataGridViewCellStyle
 = _
            New DataGridViewCellStyle()
        style.Alignment = _
            DataGridViewContentAlignment.MiddleCenter
        style.ForeColor = Color.IndianRed
        style.BackColor = Color.Ivory

        For Each column As
 DataGridViewColumn _
            In dataGridView.Columns

            column.HeaderCell.Value = _
                column.Index.ToString
            column.HeaderCell.Style = style
        Next
    End Sub

    ' Change the text in the column header.
    Private Sub Button9_Click(ByVal
 sender As Object, _
        ByVal args As EventArgs) Handles
 Button9.Click

        For Each column As
 DataGridViewColumn _
            In dataGridView.Columns

            column.HeaderText = String.Concat("Column
 ", _
                column.Index.ToString)
        Next
    End Sub

    ' Swap the last column with the first.
    Private Sub Button10_Click(ByVal
 sender As Object, _
        ByVal args As EventArgs) Handles
 Button10.Click

        ' Since display indexes are not necessarily unique to 
        ' each column (for example, multiple columns may have a 
        ' display index of zero) do the below to retrieve the
        ' first and last column, rather than just swap the column
        ' with DisplayIndex 0 with the column of the highest 
        ' DisplayIndex.

        Dim columnCollection As DataGridViewColumnCollection
 = _
            dataGridView.Columns

        Dim firstVisibleColumn As DataGridViewColumn
 = _
            columnCollection.GetFirstColumn(DataGridViewElementStates.Visible)
        Dim lastVisibleColumn As DataGridViewColumn
 = _
            columnCollection.GetLastColumn(DataGridViewElementStates.Visible, _
            Nothing)

        Dim firstColumn_sIndex As Integer
 = firstVisibleColumn.DisplayIndex
        firstVisibleColumn.DisplayIndex = _
            lastVisibleColumn.DisplayIndex
        lastVisibleColumn.DisplayIndex = firstColumn_sIndex
    End Sub

    ' Updated the criteria label.
    Private Sub dataGridView_AutoSizeColumnCriteriaChanged(
 _
        ByVal sender As Object,
 _
        ByVal args As DataGridViewAutoSizeColumnModeEventArgs)
 _
        Handles DataGridView.AutoSizeColumnModeChanged

        args.Column.DataGridView.Parent. _
        Controls("flowlayoutpanel"). _
        Controls(criteriaLabel).Text = _
            criteriaLabel & args.Column.AutoSizeMode.ToString
    End Sub
#End Region

    <STAThreadAttribute()> _
    Public Shared Sub Main()
        Application.Run(New DataGridViewColumnDemo())
    End Sub

End Class

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

public class DataGridViewColumnDemo : Form
{
    #region "set up form"
    public DataGridViewColumnDemo()
    {
        InitializeComponent();

        AddButton(Button1, "Reset",
            new EventHandler(ResetToDisorder));
        AddButton(Button2, "Change Column 3 Header",
            new EventHandler(ChangeColumn3Header));
        AddButton(Button3, "Change Meatloaf Recipe",
            new EventHandler(ChangeMeatloafRecipe));
        AddAdditionalButtons();

        InitializeDataGridView();
    }

    DataGridView dataGridView;
    Button Button1 = new Button();
    Button Button2 = new Button();
    Button Button3 = new Button();
    Button Button4 = new Button();
    Button Button5 = new Button();
    Button Button6 = new Button();
    Button Button7 = new Button();
    Button Button8 = new Button();
    Button Button9 = new Button();
    Button Button10 = new Button();
    FlowLayoutPanel FlowLayoutPanel1 = new FlowLayoutPanel();

    private void InitializeComponent()
    {
        FlowLayoutPanel1.Location = new Point(454, 0);
        FlowLayoutPanel1.AutoSize = true;
        FlowLayoutPanel1.FlowDirection = FlowDirection.TopDown;
        FlowLayoutPanel1.Name = "flowlayoutpanel";
        ClientSize = new System.Drawing.Size(614, 360);
        Controls.Add(this.FlowLayoutPanel1);
        Text = this.GetType().Name;
        AutoSize = true;
    }
    #endregion

    #region "set up DataGridView"

    private string thirdColumnHeader = "Main
 Ingredients";
    private string boringMeatloaf = "ground
 beef";
    private string boringMeatloafRanking =
 "*";
    private bool boringRecipe;
    private bool shortMode;

    private void InitializeDataGridView()
    {
        dataGridView = new System.Windows.Forms.DataGridView();
        Controls.Add(dataGridView);
        dataGridView.Size = new Size(300, 200);

        // Create an unbound DataGridView by declaring a
        // column count.
        dataGridView.ColumnCount = 4;
        AdjustDataGridViewSizing();

        // Set the column header style.
        DataGridViewCellStyle columnHeaderStyle =
            new DataGridViewCellStyle();
        columnHeaderStyle.BackColor = Color.Aqua;
        columnHeaderStyle.Font =
            new Font("Verdana", 10, FontStyle.Bold);
        dataGridView.ColumnHeadersDefaultCellStyle =
            columnHeaderStyle;

        // Set the column header names.
        dataGridView.Columns[0].Name = "Recipe";
        dataGridView.Columns[1].Name = "Category";
        dataGridView.Columns[2].Name = thirdColumnHeader;
        dataGridView.Columns[3].Name = "Rating";

        PostColumnCreation();

        // Populate the rows.
        string[] row1 = new string[]{"Meatloaf",
 
                                        "Main Dish", boringMeatloaf, boringMeatloafRanking};
        string[] row2 = new string[]{"Key
 Lime Pie", 
                                        "Dessert", "lime juice, evaporated
 milk", "****"};
        string[] row3 = new string[]{"Orange-Salsa
 Pork Chops", 
                                        "Main Dish", "pork chops,
 salsa, orange juice", "****"};
        string[] row4 = new string[]{"Black
 Bean and Rice Salad", 
                                        "Salad", "black beans, brown
 rice", "****"};
        string[] row5 = new string[]{"Chocolate
 Cheesecake", 
                                        "Dessert", "cream cheese",
 "***"};
        string[] row6 = new string[]{"Black
 Bean Dip", "Appetizer",
                                        "black beans, sour cream", "***"};
        object[] rows = new object[] { row1, row2, row3, row4,
 row5, row6 };

        foreach (string[] rowArray in
 rows)
        {
            dataGridView.Rows.Add(rowArray);
        }

        shortMode = false;
        boringRecipe = true;
    }

    private void AddButton(Button button, string
 buttonLabel,
        EventHandler handler)
    {
        FlowLayoutPanel1.Controls.Add(button);
        button.TabIndex = FlowLayoutPanel1.Controls.Count;
        button.Text = buttonLabel;
        button.AutoSize = true;
        button.Click += handler;
    }

    private void ResetToDisorder(object sender,
 System.EventArgs e)
    {
        Controls.Remove(dataGridView);
        dataGridView.Dispose();
        InitializeDataGridView();
    }

    private void ChangeColumn3Header(object
 sender,
        System.EventArgs e)
    {
        Toggle(ref shortMode);
        if (shortMode)
        { dataGridView.Columns[2].HeaderText = "S"; }
        else
        { dataGridView.Columns[2].HeaderText = thirdColumnHeader; }
    }

    private static void
 Toggle(ref bool toggleThis)
    {
        toggleThis = !toggleThis;
    }

    private void ChangeMeatloafRecipe(object
 sender,
        System.EventArgs e)
    {
        Toggle(ref boringRecipe);
        if (boringRecipe)
        {
            SetMeatloaf(boringMeatloaf, boringMeatloafRanking);
        }
        else
        {
            string greatMeatloafRecipe =
                "1 lb. lean ground beef, " +
                "1/2 cup bread crumbs, 1/4 cup ketchup," +
                "1/3 tsp onion powder, " +
                "1 clove of garlic, 1/2 pack onion soup mix " +
                " dash of your favorite BBQ Sauce";
            SetMeatloaf(greatMeatloafRecipe, "***");
        }
    }

    private void SetMeatloaf(string
 recipe, string rating)
    {
        dataGridView.Rows[0].Cells[2].Value = recipe;
        dataGridView.Rows[0].Cells[3].Value = rating;
    }
    #endregion

    #region "demonstration code"
    private void PostColumnCreation()
    {
        AddContextLabel();
        AddCriteriaLabel();
        CustomizeCellsInThirdColumn();
        AddContextMenu();
        SetDefaultCellInFirstColumn();
        ToolTips();

        dataGridView.CellMouseEnter +=
            dataGridView_CellMouseEnter;
        dataGridView.AutoSizeColumnModeChanged +=
            dataGridView_AutoSizeColumnModeChanged;
    }

    private string criteriaLabel = "Column
 3 sizing criteria: ";
    private void AddCriteriaLabel()
    {
        AddLabelToPanelIfNotAlreadyThere(criteriaLabel,
            criteriaLabel +
            dataGridView.Columns[2].AutoSizeMode.ToString() +
            ".");
    }

    private void AddContextLabel()
    {
        string labelName = "label";
        AddLabelToPanelIfNotAlreadyThere(labelName,
            "Use shortcut menu to change cell color.");
    }

    private void AddLabelToPanelIfNotAlreadyThere(
        string labelName, string labelText)
    {
        Label label;
        if (FlowLayoutPanel1.Controls[labelName] == null)
        {
            label = new Label();
            label.AutoSize = true;
            label.Name = labelName;
            label.BackColor = Color.Bisque;
            FlowLayoutPanel1.Controls.Add(label);
        }
        else
        {
            label = (Label)FlowLayoutPanel1.Controls[labelName];
        }
        label.Text = labelText;
    }

    private void CustomizeCellsInThirdColumn()
    {
        int thirdColumn = 2;
        DataGridViewColumn column =
            dataGridView.Columns[thirdColumn];
        DataGridViewCell cell = new DataGridViewTextBoxCell();

        cell.Style.BackColor = Color.Wheat;
        column.CellTemplate = cell;
    }

    ToolStripMenuItem toolStripItem1 = new ToolStripMenuItem();

    private void AddContextMenu()
    {
        toolStripItem1.Text = "Redden";
        toolStripItem1.Click += new EventHandler(toolStripItem1_Click);
        ContextMenuStrip strip = new ContextMenuStrip();
        foreach (DataGridViewColumn column in
 dataGridView.Columns)
        {

            column.ContextMenuStrip = strip;
            column.ContextMenuStrip.Items.Add(toolStripItem1);
        }
    }

    private DataGridViewCellEventArgs mouseLocation;

    // Change the cell's color.
    private void toolStripItem1_Click(object
 sender, EventArgs args)
    {
        dataGridView.Rows[mouseLocation.RowIndex]
            .Cells[mouseLocation.ColumnIndex].Style.BackColor
            = Color.Red;
    }

    // Deal with hovering over a cell.
    private void dataGridView_CellMouseEnter(object
 sender,
        DataGridViewCellEventArgs location)
    {
        mouseLocation = location;
    }

    private void SetDefaultCellInFirstColumn()
    {
        DataGridViewColumn firstColumn = dataGridView.Columns[0];
        DataGridViewCellStyle cellStyle =
            new DataGridViewCellStyle();
        cellStyle.BackColor = Color.Thistle;

        firstColumn.DefaultCellStyle = cellStyle;
    }


    private void ToolTips()
    {
        DataGridViewColumn firstColumn = dataGridView.Columns[0];
        DataGridViewColumn thirdColumn = dataGridView.Columns[2];
        firstColumn.ToolTipText =
            "This column uses a default cell.";
        thirdColumn.ToolTipText =
            "This column uses a template cell." +
            " Style changes to one cell apply to all cells.";
    }

    private void AddAdditionalButtons()
    {
        AddButton(Button4, "Set Minimum Width of Column Two",
            new EventHandler(Button4_Click));
        AddButton(Button5, "Set Width of Column One",
            new EventHandler(Button5_Click));
        AddButton(Button6, "Autosize Third Column",
            new EventHandler(Button6_Click));
        AddButton(Button7, "Add Thick Vertical Edge",
            new EventHandler(Button7_Click));
        AddButton(Button8, "Style and Number Columns",
            new EventHandler(Button8_Click));
        AddButton(Button9, "Change Column Header Text",
            new EventHandler(Button9_Click));
        AddButton(Button10, "Swap First and Last Columns",
            new EventHandler(Button10_Click));
    }

    private void AdjustDataGridViewSizing()
    {
        dataGridView.ColumnHeadersHeightSizeMode = 
            DataGridViewColumnHeadersHeightSizeMode.AutoSize;
    }

    //Set the minimum width.
    private void Button4_Click(object sender
,
        System.EventArgs e)
    {
        DataGridViewColumn column = dataGridView.Columns[1];
        column.MinimumWidth = 40;
    }

    // Set the width.
    private void Button5_Click(object sender,
 System.EventArgs e)
    {
        DataGridViewColumn column = dataGridView.Columns[0];
        column.Width = 60;
    }


    // AutoSize the third column.
    private void Button6_Click(object sender
,
        System.EventArgs e)
    {
        DataGridViewColumn column = dataGridView.Columns[2];
        column.AutoSizeMode = DataGridViewAutoSizeColumnMode.DisplayedCells;
    }

    // Set the vertical edge.
    private void Button7_Click(object sender
,
        System.EventArgs e)
    {
        int thirdColumn = 2;
        DataGridViewColumn column =
            dataGridView.Columns[thirdColumn];
        column.DividerWidth = 10;
    }

    // Style and number columns.
    private void Button8_Click(object sender
,
        EventArgs args)
    {
        DataGridViewCellStyle style = new DataGridViewCellStyle();
        style.Alignment =
            DataGridViewContentAlignment.MiddleCenter;
        style.ForeColor = Color.IndianRed;
        style.BackColor = Color.Ivory;

        foreach (DataGridViewColumn column in
 dataGridView.Columns)
        {
            column.HeaderCell.Value = column.Index.ToString();
            column.HeaderCell.Style = style;
        }
    }

    // Change the text in the column header.
    private void Button9_Click(object sender
,
        EventArgs args)
    {
        foreach (DataGridViewColumn column in
 dataGridView.Columns)
        {

            column.HeaderText = String.Concat("Column ",
                column.Index.ToString());
        }
    }

    // Swap the last column with the first.
    private void Button10_Click(object sender,
 EventArgs args)
    {
        // Since display indexes are not necessarily unique to 
        // each column (for example, multiple columns may have a 
        // display index of zero) do the below to retrieve the
        // first and last column, rather than just swap the column
        // with DisplayIndex 0 with the column of the highest 
        // DisplayIndex.

        DataGridViewColumnCollection columnCollection = dataGridView.Columns;

        DataGridViewColumn firstVisibleColumn =
            columnCollection.GetFirstColumn(DataGridViewElementStates.Visible);
        DataGridViewColumn lastVisibleColumn =
            columnCollection.GetLastColumn(
                DataGridViewElementStates.Visible, DataGridViewElementStates.None);

        int firstColumn_sIndex = firstVisibleColumn.DisplayIndex;
        firstVisibleColumn.DisplayIndex = lastVisibleColumn.DisplayIndex;
        lastVisibleColumn.DisplayIndex = firstColumn_sIndex;
    }

    // Updated the criteria label.
    private void dataGridView_AutoSizeColumnModeChanged(object
 sender,
        DataGridViewAutoSizeColumnModeEventArgs args)
    {
        args.Column.DataGridView.Parent.
            Controls["flowlayoutpanel"].Controls[criteriaLabel].
            Text = criteriaLabel
            + args.Column.AutoSizeMode.ToString();
    }
    #endregion

    [STAThreadAttribute()]
    public static void Main()
    {
        Application.Run(new DataGridViewColumnDemo());
    }

}

継承階層

System.Object
   System.Windows.Forms.DataGridViewElement
     System.Windows.Forms.DataGridViewBand
      System.Windows.Forms.DataGridViewColumn
         派生クラス

スレッドセーフ

この型の public static (Visual Basic では Shared) メンバはすべて、スレッドセーフです。インスタンスメンバの場合は、スレッドセーフであるとは限りません。

プラットフォーム

Windows 98, Windows 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

開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。

バージョン情報

.NET Framework
サポート対象 : 2.0

参照

関連項目
DataGridViewColumn メンバ
System.Windows.Forms 名前空間
DataGridView クラス
DataGridView.Columns プロパティ
DataGridViewRow
DataGridViewCell クラス
CellTemplate

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