DataGridTextBoxColumn.GetPreferredHeight(Graphics, Object) DataGridTextBoxColumn.GetPreferredHeight(Graphics, Object) DataGridTextBoxColumn.GetPreferredHeight(Graphics, Object) DataGridTextBoxColumn.GetPreferredHeight(Graphics, Object) Method

Definition

Ruft die Höhe ab, die bei der automatischen Größenanpassung von Spalten verwendet werden soll.Gets the height to be used in for automatically resizing columns.

protected public:
 override int GetPreferredHeight(System::Drawing::Graphics ^ g, System::Object ^ value);
protected internal override int GetPreferredHeight (System.Drawing.Graphics g, object value);
override this.GetPreferredHeight : System.Drawing.Graphics * obj -> int
Protected Friend Overrides Function GetPreferredHeight (g As Graphics, value As Object) As Integer

Parameter

g
Graphics Graphics Graphics Graphics

Ein Graphics-Objekt zum Zeichnen von Formen auf dem Bildschirm.A Graphics object used to draw shapes on the screen.

value
Object Object Object Object

Der zu zeichnende Wert.The value to draw.

Gibt zurück

Die Höhe für die automatische Größenanpassung der Zellen.The height the cells automatically resize to.

Beispiele

Im folgenden Beispiel wird verwendet GetPreferredHeight , um die Höhe zurückzugeben, auf die eine Spalte automatisch angepasst wird.The following example uses the GetPreferredHeight to return the height a column is automatically resized to.

public ref class MyGridColumn: public DataGridTextBoxColumn
{
public:
   int GetPrefHeight( Graphics^ g, String^ val )
   {
      return this->GetPreferredHeight( g, val );
   }

};

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

private:
   void GetPreferredHeight()
   {
      Graphics^ g;
      g = this->CreateGraphics();
      int gridPreferredHeight;
      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";
      gridPreferredHeight = myTextColumn->GetPrefHeight( g, myVal );
      Console::WriteLine( gridPreferredHeight );
   }

};
public class Form1: Form
{
 protected DataGrid dataGrid1;

private void GetPreferredHeight(){
   Graphics g;
   g = this.CreateGraphics();
   int gridPreferredHeight;
   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";
   gridPreferredHeight= myTextColumn.GetPrefHeight(g, myVal);
   Console.WriteLine(gridPreferredHeight);
   }
}

public class MyGridColumn:DataGridTextBoxColumn{
   public int GetPrefHeight(Graphics g, string val){
      return this.GetPreferredHeight(g, val);
   }
}
Public Class Form1
   Inherits Form
   Protected dataGrid1 As DataGrid
    
   Private Sub GetPreferredHeight()
      Dim g As Graphics
      g = Me.CreateGraphics()
      Dim gridPreferredHeight As Integer
      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"
      gridPreferredHeight = myTextColumn.GetPrefHeight _
      (g, myVal)
      Console.WriteLine(gridPreferredHeight)
   End Sub 
End Class 

Public Class MyGridColumn
Inherits DataGridTextBoxColumn
   public Function GetPrefHeight(g As Graphics , val As string) _
   As Integer
      return me.GetPreferredHeight(g, val)
   End Function
End Class

Gilt für:

Siehe auch