DataGridColumnStyle.GetPreferredSize(Graphics, Object) Method
Definition
Important
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When overridden in a derived class, gets the width and height of the specified value. The width and height are used when the user navigates to DataGridTableStyle using the DataGridColumnStyle.
protected public:
abstract System::Drawing::Size GetPreferredSize(System::Drawing::Graphics ^ g, System::Object ^ value);
protected internal abstract System.Drawing.Size GetPreferredSize (System.Drawing.Graphics g, object value);
abstract member GetPreferredSize : System.Drawing.Graphics * obj -> System.Drawing.Size
Protected Friend MustOverride Function GetPreferredSize (g As Graphics, value As Object) As Size
Parameters
- value
- Object
An object value for which you want to know the screen height and width.
Returns
A Size that contains the dimensions of the cell.
Examples
The following code example uses the GetPreferredSize method to return the optimum size for a value.
public ref class MyGridColumn: public DataGridTextBoxColumn
{
public:
Size GetPrefSize( Graphics^ g, String^ thisString )
{
return this->GetPreferredSize( g, thisString );
}
};
public ref class Form1: public Form
{
protected:
DataGrid^ dataGrid1;
private:
void GetHeight()
{
MyGridColumn^ myGridColumn;
// Get a DataGridColumnStyle of a DataGrid control.
myGridColumn = dynamic_cast<MyGridColumn^>(dataGrid1->TableStyles[ 0 ]->GridColumnStyles[ "CompanyName" ]);
// Create a Graphics object.
Graphics^ g = this->CreateGraphics();
System::Drawing::Size s = myGridColumn->GetPrefSize( g, "A string" );
}
};
public class Form1: Form
{
protected DataGrid dataGrid1;
private void GetHeight(){
MyGridColumn myGridColumn;
// Get a DataGridColumnStyle of a DataGrid control.
myGridColumn = (MyGridColumn) dataGrid1.TableStyles[0].
GridColumnStyles["CompanyName"];
// Create a Graphics object.
Graphics g = this.CreateGraphics();
Size s =myGridColumn.GetPrefSize(g, "A string");
}
}
public class MyGridColumn:DataGridTextBoxColumn{
public Size GetPrefSize(Graphics g, string thisString){
return this.GetPreferredSize(g,thisString);
}
}
Public Class Form1
Inherits Form
Protected dataGrid1 As DataGrid
Private Sub GetHeight()
Dim myGridColumn As MyGridColumn
' Get a DataGridColumnStyle of a DataGrid control.
myGridColumn = CType(dataGrid1.TableStyles(0). _
GridColumnStyles("CompanyName"), myGridColumn)
' Create a Graphics object.
Dim g As Graphics = Me.CreateGraphics()
Dim s As Size = myGridColumn.GetPrefSize(g, "A string")
End Sub
End Class
Public Class MyGridColumn
Inherits DataGridTextBoxColumn
public Function GetPrefSize(g As Graphics , _
thisString As String ) As Size
return me.GetPreferredSize(g,thisString)
End Function
End Class
Remarks
Use GetPreferredSize to determine the width a column should resize to, given a particular string or numeral.
Applies to
See also
Visszajelzés
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