DataGridTextBoxColumn.GetPreferredSize(Graphics, Object) Método

Definición

Espacio de nombres:

System.Windows.Forms

Ensamblado:

System.Windows.Forms.dll

Devuelve el ancho y alto óptimos de la celda en una fila especificada con relación al valor especificado.

protected public:
 override System::Drawing::Size GetPreferredSize(System::Drawing::Graphics ^ g, System::Object ^ value);

protected internal override System.Drawing.Size GetPreferredSize (System.Drawing.Graphics g, object value);

override this.GetPreferredSize : System.Drawing.Graphics * obj -> System.Drawing.Size

Protected Friend Overrides Function GetPreferredSize (g As Graphics, value As Object) As Size

Parámetros

g

Graphics

Se utiliza un objeto Graphics para dibujar formas en la pantalla.

value

Object

El valor que se dibuja.

Devoluciones

Size

Size que contiene las dimensiones de la celda.

Ejemplos

En el ejemplo siguiente se usa GetPreferredSize para devolver un Sizeobjeto .

public ref class MyGridColumn: public DataGridTextBoxColumn
{
public:
   Size GetPrefSize( Graphics^ g, String^ val )
   {
      return this->GetPreferredSize( g, val );
   }

};

public ref class Form1: public Form
{
protected:
   DataGrid^ dataGrid1;

private:
   void GetPreferredSize()
   {
      Graphics^ g;
      g = this->CreateGraphics();
      System::Drawing::Size gridPreferredSize;
      MyGridColumn^ myTextColumn;
      
      // Assuming column 1 of a DataGrid control is a 
      // DataGridTextBoxColumn.
      myTextColumn = dynamic_cast<MyGridColumn^>(dataGrid1->TableStyles[ 0 ]->GridColumnStyles[ 1 ]);
      String^ myVal;
      myVal = "A long string value";
      gridPreferredSize = myTextColumn->GetPrefSize( g, myVal );
      Console::WriteLine( gridPreferredSize );
   }

};

public class Form1: Form
{
 protected DataGrid dataGrid1;

private void GetPreferredSize(){
   Graphics g;
   g = this.CreateGraphics();
   Size gridPreferredSize;
   MyGridColumn myTextColumn;
    // Assuming column 1 of a DataGrid control is a 
    // DataGridTextBoxColumn.
   myTextColumn = (MyGridColumn)
   dataGrid1.TableStyles[0].GridColumnStyles[1];
   string myVal;
   myVal = "A long string value";
   gridPreferredSize = myTextColumn.GetPrefSize(g, myVal);
   Console.WriteLine(gridPreferredSize);
   }
}

public class MyGridColumn:DataGridTextBoxColumn{
   public Size GetPrefSize(Graphics g, string val){
      return this.GetPreferredSize(g, val);
   }
}

Public Class Form1
    Inherits Form
    Protected dataGrid1 As DataGrid
    
    Private Sub GetPreferredSize()
        Dim g As Graphics
        g = Me.CreateGraphics()
        Dim gridPreferredSize As Size
        Dim myTextColumn As MyGridColumn
        ' Assuming column 1 of a DataGrid control is a 
        ' DataGridTextBoxColumn.
        myTextColumn = CType(dataGrid1.TableStyles(0). _
        GridColumnStyles(1), MyGridColumn)
        Dim myVal As String
        myVal = "A long string value"
        gridPreferredSize = myTextColumn.GetPrefSize _
        (g, myVal)
        Console.WriteLine(gridPreferredSize)
    End Sub 
End Class 

Public Class MyGridColumn
Inherits DataGridTextBoxColumn
   public Function GetPrefSize(g As Graphics , val As string) _
   As Size
      return me.GetPreferredSize(g, val)
   End Function
End Class

Comentarios

El ancho y alto óptimos se calcula midiendo el tamaño de la cadena, teniendo en cuenta su fuente y atributos, y agregando valores de margen.

Consulte también

• GetPreferredHeight(Graphics, Object)
• GetMinimumHeight()
• Graphics
• Size