Bahasa

DataGridTextBoxColumn.GetPreferredHeight(Graphics, Object) Metode

Definisi

Ruang nama:
System.Windows.Forms
Rakitan:
System.Windows.Forms.dll
Sumber:
DataGridTextBoxColumn.cs
Sumber:
DataGridTextBoxColumn.cs

Mendapatkan tinggi yang akan digunakan untuk mengubah ukuran kolom secara otomatis.

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

Objek yang Graphics digunakan untuk menggambar bentuk pada layar.

value
Object

Nilai yang akan digambar.

Mengembalikan

Int32

Tinggi sel diubah ukurannya secara otomatis.

Contoh

Contoh berikut menggunakan GetPreferredHeight untuk mengembalikan tinggi kolom yang diubah ukurannya secara otomatis.

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

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