IsDefined Method (Appearance)

In This Topic

Returns whether an appearance property has been set.

Syntax

Visual Basic
C#

'Declaration
 
Public Overridable Function IsDefined( _
   ByVal prop As AppearanceProperty _
) As Boolean

'Usage
 
Dim instance As Appearance
Dim prop As AppearanceProperty
Dim value As Boolean
 
value = instance.IsDefined(prop)

public virtual bool IsDefined( 
   AppearanceProperty prop
)

Parameters

prop: AppearanceProperty object containing the appearance property

Return Value

Boolean: true if property is set; false otherwise

Remarks

Use this method to check if one of the appearance properties has been set for the object. For a list of the properties, see the AppearanceProperty class list of members.

Example

This example creates two Appearance objects and a Cell object. Several properties are set for the first Appearance object, and they are subsequently copied to the second instance. The properties are then applied from the second Appearance object to the Cell objects corresponding properties. The BackColor property of the Appearance object is then queried to see if it has been defined, and the result is returned to a text box.

C#
Visual Basic

FarPoint.Web.Spread.Appearance appr = new FarPoint.Web.Spread.Appearance();
FarPoint.Web.Spread.Appearance appr1 = new FarPoint.Web.Spread.Appearance();
FarPoint.Web.Spread.Cell acell;
appr.BackColor=Color.Red;
appr.ForeColor=Color.White;
appr.Font.Bold=True;
appr.HorizontalAlign=HorizontalAlign.Right;
appr.VerticalAlign=VerticalAlign.Top;
appr1.Copy(appr);
acell=FpSpread1.Cells[0,0];
acell.BackColor=appr1.BackColor;
acell.ForeColor=appr1.ForeColor;
acell.Font.Bold=appr1.Font.Bold;
acell.HorizontalAlign=appr1.HorizontalAlign;
acell.VerticalAlign=appr1.VerticalAlign;
FpSpread1.ActiveSheetView.SetValue(0,0,"AppearanceTest");
FpSpread1.Columns[0].Width=150;
FpSpread1.Rows[0].Height=60;
bool bl;
bl=appr.IsDefined(FarPoint.Web.Spread.AppearanceProperty.BackColor);
TextBox1.Text=Convert.ToString(bl);

Dim appr As New FarPoint.Web.Spread.Appearance()
Dim appr1 As New FarPoint.Web.Spread.Appearance()
appr.BackColor=Color.Red
appr.ForeColor=Color.White
appr.Font.Bold=True
appr.HorizontalAlign=HorizontalAlign.Right
appr.VerticalAlign=VerticalAlign.Top
appr1.Copy(appr)
Dim acell As FarPoint.Web.Spread.Cell
acell=FpSpread1.Cells(0,0)
acell.BackColor=appr1.BackColor
acell.ForeColor=appr1.ForeColor
acell.Font.Bold=appr1.Font.Bold
acell.HorizontalAlign=appr1.HorizontalAlign
acell.VerticalAlign=appr1.VerticalAlign
FpSpread1.ActiveSheetView.SetValue(0,0,"AppearanceTest")
FpSpread1.Columns(0).Width=150
FpSpread1.Rows(0).Height=60
Dim prop As FarPoint.Web.Spread.AppearanceProperty
Dim bl As Boolean
bl=appr.IsDefined(prop.BackColor)
TextBox1.Text=bl

Reference

Appearance Class
Appearance Members