DataGridView.Rows DataGridView.Rows DataGridView.Rows DataGridView.Rows Property

定義

DataGridView コントロールのすべての行を格納しているコレクションを取得します。Gets a collection that contains all the rows in the DataGridView control.

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

プロパティ値

次のコード例は、非バインドを作成する方法を示しますDataGridView; 設定、 ColumnHeadersVisibleColumnHeadersDefaultCellStyle、およびColumnCountプロパティ、使用、RowsColumnsプロパティ。The following code example demonstrates how to create an unbound DataGridView; set the ColumnHeadersVisible, ColumnHeadersDefaultCellStyle, and ColumnCount properties; and use the Rows and Columns properties. バージョンを使用する方法も示します、AutoResizeColumnHeadersHeightAutoResizeRows列ヘッダーと行のサイズを適切にメソッド。It also demonstrates how to use a version of the AutoResizeColumnHeadersHeight and AutoResizeRows methods to properly size the column headers and the rows. この例を実行するを含むフォームに次のコードを貼り付け、DataGridViewという名前dataGridView1という名前のボタンとButton1を呼び出して、InitializeDataGridViewフォームのコンス トラクターからメソッドまたはLoadイベント ハンドラー。To run this example, paste the following code into a form that contains a DataGridView named dataGridView1 and a button named Button1, and then call the InitializeDataGridView method from the form's constructor or Load event handler. すべてのイベントがイベント ハンドラーに接続されていることを確認します。Ensure all events are connected with their event handlers.

   void InitializeDataGridView()
   {
      this->Size = System::Drawing::Size( 600, 600 );
      dataGridView1->Size = System::Drawing::Size( 450, 400 );

      // Create an unbound DataGridView by declaring a column count.
      dataGridView1->ColumnCount = 4;
      dataGridView1->ColumnHeadersVisible = true;

      // Set the column header style.
      DataGridViewCellStyle ^ columnHeaderStyle = gcnew DataGridViewCellStyle;
      columnHeaderStyle->BackColor = Color::Aqua;
      columnHeaderStyle->Font = gcnew System::Drawing::Font( "Verdana",10,FontStyle::Bold );
      dataGridView1->ColumnHeadersDefaultCellStyle = columnHeaderStyle;

      // Set the column header names.
      dataGridView1->Columns[ 0 ]->Name = "Recipe";
      dataGridView1->Columns[ 1 ]->Name = "Category";
      dataGridView1->Columns[ 2 ]->Name = "Main Ingredients";
      dataGridView1->Columns[ 3 ]->Name = "Rating";

      // Populate the rows.
      array<String^>^row1 = gcnew array<String^>{
         "Meatloaf","Main Dish","ground beef","**"
      };
      array<String^>^row2 = gcnew array<String^>{
         "Key Lime Pie","Dessert","lime juice, evaporated milk","****"
      };
      array<String^>^row3 = gcnew array<String^>{
         "Orange-Salsa Pork Chops","Main Dish","pork chops, salsa, orange juice","****"
      };
      array<String^>^row4 = gcnew array<String^>{
         "Black Bean and Rice Salad","Salad","black beans, brown rice","****"
      };
      array<String^>^row5 = gcnew array<String^>{
         "Chocolate Cheesecake","Dessert","cream cheese","***"
      };
      array<String^>^row6 = gcnew array<String^>{
         "Black Bean Dip","Appetizer","black beans, sour cream","***"
      };
      array<Object^>^rows = {row1,row2,row3,row4,row5,row6};
      System::Collections::IEnumerator^ myEnum = rows->GetEnumerator();
      while ( myEnum->MoveNext() )
      {
         array<String^>^rowArray = safe_cast<array<String^>^>(myEnum->Current);
         dataGridView1->Rows->Add( rowArray );
      }
   }

   void Button1_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
   {
      // Resize the height of the column headers. 
      dataGridView1->AutoResizeColumnHeadersHeight();

      // Resize all the row heights to fit the contents of all non-header cells.
      dataGridView1->AutoResizeRows(
            DataGridViewAutoSizeRowsMode::AllCellsExceptHeaders);
   }

   void InitializeContextMenu()
   {
      // Create the menu item.
      MenuItem^ getRecipe = gcnew MenuItem( "Search for recipe",gcnew System::EventHandler( this, &Form1::OnMenuClick ) );

      // Add the menu item to the shortcut menu.
      System::Windows::Forms::ContextMenuStrip^ recipeMenu = gcnew System::Windows::Forms::ContextMenuStrip();

      // Set the shortcut menu for the first column.
      dataGridView1->Columns[ 0 ]->ContextMenuStrip = recipeMenu;
   }

   void OnMenuClick( Object^ /*sender*/, System::EventArgs^ /*e*/ )
   {
      if ( dataGridView1->CurrentCell != nullptr )
      {
         //Retrieve the recipe name.
         String^ recipeName = dynamic_cast<String^>(dataGridView1->CurrentCell->Value);

         //Search for the recipe.
         System::Diagnostics::Process::Start( String::Format( "http://search.msn.com/results.aspx?q={0}", recipeName ), nullptr );
      }
   }

private:

   private void InitializeDataGridView()
   {
       // Create an unbound DataGridView by declaring a column count.
       dataGridView1.ColumnCount = 4;
       dataGridView1.ColumnHeadersVisible = true;

       // Set the column header style.
       DataGridViewCellStyle columnHeaderStyle = new DataGridViewCellStyle();

       columnHeaderStyle.BackColor = Color.Beige;
       columnHeaderStyle.Font = new Font("Verdana", 10, FontStyle.Bold);
       dataGridView1.ColumnHeadersDefaultCellStyle = columnHeaderStyle;

       // Set the column header names.
       dataGridView1.Columns[0].Name = "Recipe";
       dataGridView1.Columns[1].Name = "Category";
       dataGridView1.Columns[2].Name = "Main Ingredients";
       dataGridView1.Columns[3].Name = "Rating";

       // Populate the rows.
       string[] row1 = new string[] { "Meatloaf", "Main Dish", "ground beef",
           "**" };
       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)
       {
           dataGridView1.Rows.Add(rowArray);
       }
   }

   private void button1_Click(object sender, System.EventArgs e)
   {
       // Resize the height of the column headers. 
       dataGridView1.AutoResizeColumnHeadersHeight();

       // Resize all the row heights to fit the contents of all non-header cells.
       dataGridView1.AutoResizeRows(
           DataGridViewAutoSizeRowsMode.AllCellsExceptHeaders);
   }

   private void InitializeContextMenu()
   {
       // Create the menu item.
       ToolStripMenuItem getRecipe = new ToolStripMenuItem("Search for recipe", null,
           new System.EventHandler(ShortcutMenuClick));

       // Add the menu item to the shortcut menu.
       ContextMenuStrip recipeMenu = new ContextMenuStrip();
       recipeMenu.Items.Add(getRecipe); 

       // Set the shortcut menu for the first column.
       dataGridView1.Columns[0].ContextMenuStrip = recipeMenu;
       dataGridView1.MouseDown += new MouseEventHandler(dataGridView1_MouseDown);
   }

   private DataGridViewCell clickedCell;

   private void dataGridView1_MouseDown(object sender, MouseEventArgs e)
   {
// If the user right-clicks a cell, store it for use by the shortcut menu.
       if (e.Button == MouseButtons.Right)
       {
           DataGridView.HitTestInfo hit = dataGridView1.HitTest(e.X, e.Y);
           if (hit.Type == DataGridViewHitTestType.Cell)
           {
               clickedCell =
                   dataGridView1.Rows[hit.RowIndex].Cells[hit.ColumnIndex];
           }
       }
   }

   private void ShortcutMenuClick(object sender, System.EventArgs e)
   {
       if (clickedCell != null)
       {
           //Retrieve the recipe name.
           string recipeName = (string)clickedCell.Value;

           //Search for the recipe.
           System.Diagnostics.Process.Start(
               "http://search.msn.com/results.aspx?q=" + recipeName);
               //null);
       }
   }
Private Sub InitializeDataGridView()

    ' Create an unbound DataGridView by declaring a column count.
    dataGridView1.ColumnCount = 4
    dataGridView1.ColumnHeadersVisible = True

    ' Set the column header style.
    Dim columnHeaderStyle As New DataGridViewCellStyle()

    columnHeaderStyle.BackColor = Color.Beige
    columnHeaderStyle.Font = New Font("Verdana", 10, FontStyle.Bold)
    dataGridView1.ColumnHeadersDefaultCellStyle = columnHeaderStyle

    ' Set the column header names.
    dataGridView1.Columns(0).Name = "Recipe"
    dataGridView1.Columns(1).Name = "Category"
    dataGridView1.Columns(2).Name = "Main Ingredients"
    dataGridView1.Columns(3).Name = "Rating"

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

    Dim rowArray As String()
    For Each rowArray In rows
        dataGridView1.Rows.Add(rowArray)
    Next rowArray

End Sub

Private Sub button1_Click(ByVal sender As Object, _
    ByVal e As System.EventArgs) Handles button1.Click

    ' Resize the height of the column headers. 
    dataGridView1.AutoResizeColumnHeadersHeight()

    ' Resize all the row heights to fit the contents of all 
    ' non-header cells.
    dataGridView1.AutoResizeRows( _
        DataGridViewAutoSizeRowsMode.AllCellsExceptHeaders)

End Sub

Private Sub InitializeContextMenu()

    ' Create the menu item.
    Dim getRecipe As New ToolStripMenuItem( _
        "Search for recipe", Nothing, AddressOf ShortcutMenuClick)

    ' Add the menu item to the shortcut menu.
    Dim recipeMenu As New ContextMenuStrip()
    recipeMenu.Items.Add(getRecipe)

    ' Set the shortcut menu for the first column.
    dataGridView1.Columns(0).ContextMenuStrip = recipeMenu

End Sub

Private clickedCell As DataGridViewCell

Private Sub dataGridView1_MouseDown(ByVal sender As Object, _
    ByVal e As MouseEventArgs) Handles dataGridView1.MouseDown

    ' If the user right-clicks a cell, store it for use by the 
    ' shortcut menu.
    If e.Button = MouseButtons.Right Then
        Dim hit As DataGridView.HitTestInfo = _
            dataGridView1.HitTest(e.X, e.Y)
        If hit.Type = DataGridViewHitTestType.Cell Then
            clickedCell = _
                dataGridView1.Rows(hit.RowIndex).Cells(hit.ColumnIndex)
        End If
    End If

End Sub

Private Sub ShortcutMenuClick(ByVal sender As Object, _
    ByVal e As System.EventArgs)

    If (clickedCell IsNot Nothing) Then
        'Retrieve the recipe name.
        Dim recipeName As String = CStr(clickedCell.Value)

        'Search for the recipe.
        System.Diagnostics.Process.Start( _
            "http://search.msn.com/results.aspx?q=" + recipeName)
    End If

End Sub

注釈

使用することができます、Rowsを手動で読み込むコレクション、DataGridViewデータ ソースにバインドするのではなくコントロール。You can use the Rows collection to manually populate a DataGridView control instead of binding it to a data source. 次の例では、手動で追加し、行を挿入する方法を示します。The following example shows you how to manually add and insert rows. この例では、4 つが追加されてDataGridViewTextBoxColumnをコントロールのインスタンスColumnsコレクション。This example assumes that you have added four DataGridViewTextBoxColumn instances to the control's Columns collection.

Me.dataGridView1.Rows.Add("five", "six", "seven", "eight")  
Me.dataGridView1.Rows.Insert(0, "one", "two", "three", "four")  
this.dataGridView1.Rows.Add("five", "six", "seven", "eight");this.dataGridView1.Rows.Insert(0, "one", "two", "three", "four");  

プログラムで、バインドされていないメンバーを追加する詳細な例についてDataGridViewコントロールを例を参照してください。For a detailed example that programmatically populates an unbound DataGridView control, see the Example section.

行には、セルの値だけでなく、スタイル情報が含まれます。Rows include style information in addition to cell values. このため、追加、または既にスタイルを設定する既存の行に基づく行を挿入する可能性があります。For this reason, you might want to add or insert rows based on existing rows that you have already styled. これを行うを使用して、 AddCopyAddCopiesInsertCopy、およびInsertCopiesメソッド。You can do this using the AddCopy, AddCopies, InsertCopy, and InsertCopies methods.

使用することも、Rowsコントロールの値を変更または行を削除するコレクション。You can also use the Rows collection to modify the values in the control or to remove rows. 値を変更したり、外部データ ソースにコントロールをバインドするかどうかに関係なく、行を削除できます。You can modify values or remove rows regardless of whether the control is bound to an external data source. データ ソースがある場合は、データ ソースへの直接変更されます。If there is a data source, the changes are made directly to the data source. 引き続き、ただし、リモートのデータベースにデータ ソースの更新をプッシュする必要があります。You may still need to push the data source updates to a remote database, however. 詳細については、「方法 :バインド データを Windows フォーム DataGridView コントロールします。For more information, see How to: Bind Data to the Windows Forms DataGridView Control.

次の例では、セルの値をプログラムで変更する方法を示します。The following example shows you how to modify cell values programmatically.

' Modify the value in the first cell of the second row.  
Me.dataGridView1.Rows[1].Cells[0].Value = "new value"  

' The previous line is equivalent to the following line.  
Me.dataGridView1[0, 1].Value = "new value"  
// Modify the value in the first cell of the second row.  
this.dataGridView1.Rows[1].Cells[0].Value = "new value";  

// The previous line is equivalent to the following line.  
this.dataGridView1[0, 1].Value = "new value";  

使用することができます、標準的なコレクションの機能に加えて、Rows行に関する情報を取得するコレクション。In addition to the standard collection capabilities, you can use the Rows collection to retrieve information about rows. 使用して、GetRowStateメソッドの特定の行の状態を判断します。Use the GetRowState method to determine the state of a particular row. 使用して、GetRowCountGetRowsHeight行の数または特定の状態の行の高さの合計を判断するメソッド。Use the GetRowCount and GetRowsHeight methods to determine the number of rows or the combined height of rows in a particular state. 特定の状態を持つ行のインデックスを取得する、 GetFirstRowGetLastRowGetNextRow、およびGetPreviousRowメソッド。To retrieve the index of a row with a particular state, use the GetFirstRow, GetLastRow, GetNextRow, and GetPreviousRow methods.

次の例では、最初の選択した行のインデックスを取得し、それを使用して、プログラムによって、行を削除する方法を示します。The following example shows you how to retrieve the index of the first selected row, and then use it to programmatically delete the row.

Dim rowToDelete As Int32 = Me.dataGridView1.Rows.GetFirstRow( _  
    DataGridViewElementStates.Selected)  
If rowToDelete > -1 Then  
    Me.dataGridView1.Rows.RemoveAt(rowToDelete)  
End If  
Int32 rowToDelete = this.dataGridView1.Rows.GetFirstRow(  
    DataGridViewElementStates.Selected);  
if (rowToDelete > -1)  
{  
    this.dataGridView1.Rows.RemoveAt(rowToDelete);  
}  

パフォーマンスを向上させる、DataGridViewRowCollectionによって返される、Rowsプロパティは、共有と共有されていない行を含めることができます。To improve performance, the DataGridViewRowCollection returned by the Rows property can include shared and unshared rows. 共有行では、大量のレコード セットのコストを削減するためのメモリを共有します。Shared rows share memory to reduce the cost of a large record set. レコード セットが非常に大きい場合にアクセスするとき、行の共有を可能な限り保持する注意が必要、Rowsプロパティ。If your record set is very large, you should be careful to keep the rows shared as much as possible when accessing the Rows property.

詳細については、次を参照してください。 Windows フォーム DataGridView コントロールを拡張するためのベスト プラクティスします。For more information, see Best Practices for Scaling the Windows Forms DataGridView Control.

適用対象

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