Problems with Converting VB.NET Code to C#.NET

[jeepzhen]

Hi experts, I'm Currently working on a project converting VB codes to C#. Now I'm facing a problem and not understand the VB Code to convert below codes into C# synthax.
Please help to explain the below codes and provide me some hint on how to convert it.

Private Function Power2(ByVal exponent As Long) As Long
        Static result(0 To 31) As Long, i As Integer
         ' Evaluate all powers of 2 only once.
        If result(0) = 0 Then
            result(0) = 1
            For i = 1 To 30
                result(i) = result(i - 1) * 2
            Next
            result(31) = &H80000000        ' This is a special value.
        End If
        Power2 = result(exponent)
End Function

[Frinavale]

Notes:

• you cannot have a static variable declared inside a method in C# so the static definition of the array of longs was moved outside of the method
• &H80000000 is a hex number in VB.NET but in C# the hex notation is 0x80000000
• this Power2 = result(exponent ) is an old school vb way of returning a value...therefo re the return keyword was used instead

static long[] result = new long[32];
private long Power2(long exponent){
        // Evaluate all powers of 2 only once.
        if(result[0] == 0){
            result[0] = 1;
            for(int i = 1;i < 30; i++){
                result[i] = result[i - 1] * 2;
            }
            result[31] = 0x80000000;       // This is a special value. (assuming its hex)
        }//end if
        return result[exponent];
}//end of function

I would recommend doing some validation before accessing the array index at the exponent... you will get an exception if you pass something larger than 31 or less than 0 as the exponent parameter...