Optional - Method Signature

[thesti]

hi,

i'm kinda confuse about how the optional keyword relates to a method signature. as a method with optional parameters has multiple method signature

in VB.net if i declare the following method

Public Sub OptionalMethod(Optional ByVal arg1 As Integer = 1, Optional ByVal arg2 As Integer = 2, Optional ByVal arg3 As Integer = 3)

then i have four method signatures, which are OptionalMethod(), OptionalMethod(Integer), OptionalMethod(Integer, Integer) and OptionalMethod(Integer, Integer, Integer).

am i right?


thank you.

[shweta123]

Hi,

Optional keyword is used if it is not necessary to send all the parameters to the function when you call that function. So when you use Optional keyword you have to assign default value to the parameter.In your case you can call OptionalMethod procedure in different ways.
e.g.
1> OptionalMethod()
2> OptionalMethod (1,2,3)
3> OptionalMethod (1,2)

hi,

i'm kinda confuse about how the optional keyword relates to a method signature. as a method with optional parameters has multiple method signature

in VB.net if i declare the following method

Public Sub OptionalMethod(Optional ByVal arg1 As Integer = 1, Optional ByVal arg2 As Integer = 2, Optional ByVal arg3 As Integer = 3)

then i have four method signatures, which are OptionalMethod(), OptionalMethod(Integer), OptionalMethod(Integer, Integer) and OptionalMethod(Integer, Integer, Integer).

am i right?


thank you.