Please help...from C# to VB

[JC Voon]

Hi :

I'm new to VB and C#, can someone help me to convert this code to VB

1. The following code, what is the 'this' means ?
public object this [int index]
{
get {return ((IDataRecord)myObj)[index];}
}

2. What is the different using 'this' and 'base' ?
public class MyClass
{
public MyClass(int Param1)
: base (Param1, 123)
{
}
// the above block can i change to ..??
//public MyClass(int Param1)
//{
// base.MyClass(Param1, 123)

// }

public MyClass(int Param1, int Param2)
: this (Param1)
{
...
}
}


Is this conversion correct ?

public class MyClass
public sub New(Param1 AS Integer)
MyBase.New(Param1, 123) ' or MyClass.New(Param1, 123) ???
end sub

public sub New(Param1 AS Integer, Param2 AS Integer)
Me.New(Param1, 123)
...
end sub
end class


Thanks
JCVoon

 

[Guest]

Hi JC Voon,

the next link will be vey interesting for you:
http://www.kamalpatel.net/ConvertCSharp2VB.aspx

Kind Regards,

Jorge Serrano Pérez
MVP VB.NET

 

[Shiva]

1. It refers to the indexer implementation of a class (also known as default
property). For more info on this:
http://msdn.microsoft.com/library/en-us/csref/html/vclrfIndexedPropertiesPG.asp?frame=true

2. MyClass is a keyword in VB .NET, so it can't be used for class names.
Also, this class doesn't derive from any class that takes two parametes for
its constructor, so MyBase.New(Param1, 123) will not work. Finally, the
constructor cannot call itself (Me.New(Param1, 123))

HTH.

Hi :

I'm new to VB and C#, can someone help me to convert this code to VB

1. The following code, what is the 'this' means ?
public object this [int index]
{
get {return ((IDataRecord)myObj)[index];}
}

2. What is the different using 'this' and 'base' ?
public class MyClass
{
public MyClass(int Param1)
: base (Param1, 123)
{
}
// the above block can i change to ..??
//public MyClass(int Param1)
//{
// base.MyClass(Param1, 123)

// }

public MyClass(int Param1, int Param2)
: this (Param1)
{
...
}
}


Is this conversion correct ?

public class MyClass
public sub New(Param1 AS Integer)
MyBase.New(Param1, 123) ' or MyClass.New(Param1, 123) ???
end sub

public sub New(Param1 AS Integer, Param2 AS Integer)
Me.New(Param1, 123)
...
end sub
end class


Thanks
JCVoon

 

[Herfried K. Wagner [MVP]]

Jorge,

"Jorge Serrano [MVP VB]"

the next link will be vey interesting for you:
http://www.kamalpatel.net/ConvertCSharp2VB.aspx

ACK. Some more converters:

Converting code between .NET programming languages
<URL:http://dotnet.mvps.org/dotnet/faqs/?id=languageconverters&lang=en>

 

[Guest]

Thanks a million Herfried,

this is a better link with more information.

Thanks a lot!

Jorge

Jorge,

"Jorge Serrano [MVP VB]"

the next link will be vey interesting for you:
http://www.kamalpatel.net/ConvertCSharp2VB.aspx

ACK. Some more converters:

Converting code between .NET programming languages
<URL:http://dotnet.mvps.org/dotnet/faqs/?id=languageconverters&lang=en>

 

[JC Voon]

Shiva, Jorge Serrano:

Thanks for the reply.

I use the converter from
http://www.aspalliance.com/aldotnet/examples/translate.aspx

The following C# code.....

public object this [int index] // Indexer declaration
{
get {return ....;}
}


After convert to VB.....

Default Public ReadOnly Property Item(ByVal index As Integer) As
Object
Get
Return ...
End Get
End Property

The 'this' keyword in C# is convert to 'Item', but some of the
converter (can't remember which one) convert to 'Me' and some of it
convert to 'Blubber', doest it means i can simply put any name i like
?

Thanks

Regards
JCVoon

 

[Shiva]

I feel 'Item' (with Default keyword) is more appropriate (thats what being
used in .NET base class libaries also). But, practically it can be any name
but not Me because its a keyword in Visual Basic .NET.

HTH

Shiva, Jorge Serrano:

Thanks for the reply.

I use the converter from
http://www.aspalliance.com/aldotnet/examples/translate.aspx

The following C# code.....

public object this [int index] // Indexer declaration
{
get {return ....;}
}


After convert to VB.....

Default Public ReadOnly Property Item(ByVal index As Integer) As
Object
Get
Return ...
End Get
End Property

The 'this' keyword in C# is convert to 'Item', but some of the
converter (can't remember which one) convert to 'Me' and some of it
convert to 'Blubber', doest it means i can simply put any name i like
?

Thanks

Regards
JCVoon