Default Property

[Levon Levonian]

Hello All,

there was much talk about the fact that .NET doesn't support default
properties for objects, meaning that if in VB6 i could have Textbox1 =
"hello", in .NET i can do it only by refering explicitly to the property
Textbox1.Text = "hello".

why then some objects like DataRow still have default properties?
dr.Item("ID")
and
dr("ID")
both work fine and serve the same purpose

and of course, my quesion is how to create a default property for my own
classes? is it by including the Item property when i design my classes? or
is there some other tricks?

thank you,
Levon

 

[avnrao]

You can create default properties using
System.ComponentModel.DefaultPropertyAttribute.

Av.

 

[Levon Levonian]

Thank you guys,

so, the name of Item property is just a convention?

// levon

 

[William Ryan eMVP]

If you have indexed properties (or indexers in C#) which basically means
more than 1 value in the property, then you can use Default properties.
Avnroe shows you how to do it with an attribute
http://www.knowdotnet.com/articles/properties2.html

 

[William Ryan eMVP]

Item is used by default but it could be any name you want. I'd recommend
using Item though in most cases to be consistent.