[英]Set a default value to a property and make it serializable
I need to set a default value for a property, but I can't do it like this: 我需要为属性设置默认值,但是我不能这样做:
private int prop = 1;
public Prop
{
get { return prop;} ...
}
Because I need to serialize this class, and if I do it, I loose the default value. 因为我需要序列化此类,并且如果要执行此操作,则会释放默认值。
Are you aware of any solution that works after the serialization and before, adding an attribute to the property? 您是否知道在序列化之后和向属性添加属性之前可行的解决方案?
I'm working with c# with framework 3.5. 我正在使用带有框架3.5的C#。
DefaultValueAttribute DefaultValueAttribute
[DefaultValue("SomeValue")]
public string Prop { get; set; }
You can read a lot about serialization here: http://msdn.microsoft.com/en-us/library/system.xml.serialization.xmlserializer.aspx 您可以在这里阅读很多有关序列化的信息: http : //msdn.microsoft.com/zh-cn/library/system.xml.serialization.xmlserializer.aspx
There is also: 还有:
''' <summary>
''' The defaults size for the list item.
''' </summary>
''' <value>Size.</value>
''' <returns>Size.</returns>
''' <remarks></remarks>
<Category("Appearance")> _
<Description("The defaults size for the list item.")> _
Public Property DefaultItemSize() As Size Implements IVisualList.DefaultItemSize
Get
Return m_DefaultItemSize
End Get
Set(ByVal value As Size)
m_DefaultItemSize = value
End Set
End Property
Protected Overridable Function ShouldSerializeDefaultItemSize() As Boolean
If m_DefaultItemSize.Equals(New Size(100, m_CellHeight)) Then Return False
Return True
End Function
or 要么
Another option may be to use these attributes: 另一种选择是使用以下属性:
[OnSerializing()] [OnSerializing()]
http://msdn.microsoft.com/en-us/library/system.runtime.serialization.onserializingattribute.aspx http://msdn.microsoft.com/en-us/library/system.runtime.serialization.onserializingattribute.aspx
[OnDeserializing()] [OnDeserializing()]
http://msdn.microsoft.com/en-us/library/system.runtime.serialization.ondeserializingattribute.aspx http://msdn.microsoft.com/en-us/library/system.runtime.serialization.ondeserializingattribute.aspx
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