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

Definición

Obtiene una colección que contiene todas las filas del control DataGridView.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

Valor de propiedad

Ejemplos

En el ejemplo de código siguiente se muestra cómo crear un DataGridViewsin enlazar ColumnHeadersVisible; ColumnHeadersDefaultCellStyleestablezca las ColumnCount propiedades, y, y Rows use Columns las propiedades y.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. También muestra cómo utilizar una versión de los AutoResizeColumnHeadersHeight métodos y AutoResizeRows para ajustar correctamente el tamaño de los encabezados de columna y las filas.It also demonstrates how to use a version of the AutoResizeColumnHeadersHeight and AutoResizeRows methods to properly size the column headers and the rows. Para ejecutar este ejemplo, pegue el código siguiente en un formulario que contenga DataGridView un dataGridView1 denominado y un botón Button1denominado y, a continuación InitializeDataGridView , llame al método desde el constructor Load del formulario o el controlador de eventos.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. Asegúrese de que todos los eventos están conectados con sus controladores de eventos.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

Comentarios

Puede utilizar la Rows colección para rellenar manualmente DataGridView un control en lugar de enlazarlo a un origen de datos.You can use the Rows collection to manually populate a DataGridView control instead of binding it to a data source. En el ejemplo siguiente se muestra cómo agregar e insertar filas manualmente.The following example shows you how to manually add and insert rows. En este ejemplo se da por supuesto que DataGridViewTextBoxColumn ha agregado cuatro instancias a Columns la colección del control.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");  

Para obtener un ejemplo detallado que rellena mediante programación un control sin DataGridView enlazar, vea la sección de ejemplo.For a detailed example that programmatically populates an unbound DataGridView control, see the Example section.

Las filas incluyen información de estilo además de los valores de celda.Rows include style information in addition to cell values. Por esta razón, es posible que desee agregar o Insertar filas basadas en filas existentes que ya ha estilo.For this reason, you might want to add or insert rows based on existing rows that you have already styled. Para ello, puede usar los AddCopymétodos AddCopies, InsertCopy, y InsertCopies .You can do this using the AddCopy, AddCopies, InsertCopy, and InsertCopies methods.

También puede utilizar la Rows colección para modificar los valores del control o para quitar filas.You can also use the Rows collection to modify the values in the control or to remove rows. Puede modificar valores o quitar filas independientemente de si el control está enlazado a un origen de datos externo.You can modify values or remove rows regardless of whether the control is bound to an external data source. Si hay un origen de datos, los cambios se realizan directamente en el origen de datos.If there is a data source, the changes are made directly to the data source. Sin embargo, es posible que tenga que enviar las actualizaciones del origen de datos a una base de datos remota.You may still need to push the data source updates to a remote database, however. Para obtener más información, vea Cómo: Enlazar datos al controlDataGridView Windows Forms.For more information, see How to: Bind Data to the Windows Forms DataGridView Control.

En el ejemplo siguiente se muestra cómo modificar los valores de las celdas mediante programación.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";  

Además de las capacidades de colección estándar, puede utilizar la Rows colección para recuperar información acerca de las filas.In addition to the standard collection capabilities, you can use the Rows collection to retrieve information about rows. Utilice el GetRowState método para determinar el estado de una fila determinada.Use the GetRowState method to determine the state of a particular row. Utilice los GetRowCount métodos GetRowsHeight y para determinar el número de filas o el alto combinado de las filas en un estado determinado.Use the GetRowCount and GetRowsHeight methods to determine the number of rows or the combined height of rows in a particular state. Para recuperar el índice de una fila con un estado determinado, use los GetFirstRowmétodos GetLastRow GetNextRow,, y GetPreviousRow .To retrieve the index of a row with a particular state, use the GetFirstRow, GetLastRow, GetNextRow, and GetPreviousRow methods.

En el ejemplo siguiente se muestra cómo recuperar el índice de la primera fila seleccionada y, a continuación, utilizarla para eliminar la fila mediante programación.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);  
}  

Para mejorar el rendimiento, DataGridViewRowCollection el devuelto Rows por la propiedad puede incluir filas compartidas y no compartidas.To improve performance, the DataGridViewRowCollection returned by the Rows property can include shared and unshared rows. Las filas compartidas comparten la memoria para reducir el costo de un conjunto de registros grande.Shared rows share memory to reduce the cost of a large record set. Si el conjunto de registros es muy grande, debe tener cuidado de mantener las filas compartidas lo máximo posible al obtener acceso Rows a la propiedad.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.

Para obtener más información, consulte Procedimientos recomendados para ajustar la escala del control DataGridView en Windows Forms.For more information, see Best Practices for Scaling the Windows Forms DataGridView Control.

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