The following code example demonstrates the use of the DefaultSettingValueAttribute applied to three of the four properties of the FormSettings wrapper class, which is derived from the ApplicationSettingsBase class. This class is used to persist the location, size, background color, and text of form. The first three of these form properties have default values associated with them.
The full code example is listed in the ApplicationSettingsBase class overview.
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'Application settings wrapper class. This class defines the settings we intend to use in our application.
NotInheritable Class FormSettings
Inherits ApplicationSettingsBase
<UserScopedSettingAttribute()> _
Public Property FormText() As String
Get
Return CStr(Me("FormText"))
End Get
Set(ByVal value As String)
Me("FormText") = value
End Set
End Property
<UserScopedSettingAttribute(), DefaultSettingValueAttribute("0, 0")> _
Public Property FormLocation() As Point
Get
Return CType(Me("FormLocation"), Point)
End Get
Set(ByVal value As Point)
Me("FormLocation") = value
End Set
End Property
<UserScopedSettingAttribute(), DefaultSettingValueAttribute("225, 200")> _
Public Property FormSize() As Size
Get
Return CType(Me("FormSize"), Size)
End Get
Set(ByVal value As Size)
Me("FormSize") = value
End Set
End Property
<UserScopedSettingAttribute(), DefaultSettingValueAttribute("LightGray")> _
Public Property FormBackColor() As Color
Get
Return CType(Me("FormBackColor"), Color)
End Get
Set(ByVal value As Color)
Me("FormBackColor") = value
End Set
End Property
End Class
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//Application settings wrapper class
sealed class FormSettings : ApplicationSettingsBase
{
[UserScopedSettingAttribute()]
public String FormText
{
get { return (String)this["FormText"]; }
set { this["FormText"] = value; }
}
[UserScopedSettingAttribute()]
[DefaultSettingValueAttribute("0, 0")]
public Point FormLocation
{
get { return (Point)(this["FormLocation"]); }
set { this["FormLocation"] = value; }
}
[UserScopedSettingAttribute()]
[DefaultSettingValueAttribute("225, 200")]
public Size FormSize
{
get { return (Size)this["FormSize"]; }
set { this["FormSize"] = value; }
}
[UserScopedSettingAttribute()]
[DefaultSettingValueAttribute("LightGray")]
public Color FormBackColor
{
get { return (Color)this["FormBackColor"]; }
set { this["FormBackColor"] = value; }
}
}
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//Application settings wrapper class
ref class FormSettings sealed: public ApplicationSettingsBase
{
public:
[UserScopedSettingAttribute()]
property String^ FormText
{
String^ get()
{
return (String^)this["FormText"];
}
void set( String^ value )
{
this["FormText"] = value;
}
}
public:
[UserScopedSettingAttribute()]
[DefaultSettingValueAttribute("0, 0")]
property Point FormLocation
{
Point get()
{
return (Point)(this["FormLocation"]);
}
void set( Point value )
{
this["FormLocation"] = value;
}
}
public:
[UserScopedSettingAttribute()]
[DefaultSettingValueAttribute("225, 200")]
property Size FormSize
{
Size get()
{
return (Size)this["FormSize"];
}
void set( Size value )
{
this["FormSize"] = value;
}
}
public:
[UserScopedSettingAttribute()]
[DefaultSettingValueAttribute("LightGray")]
property Color FormBackColor
{
Color get()
{
return (Color)this["FormBackColor"];
}
void set(Color value)
{
this["FormBackColor"] = value;
}
}
};
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