Hashtable's Key Datatype

[Aads]

Hi there,

Please see the below code to understand my problem:

Dim ht As Hashtable = New Hashtable
With ht
For indx As Short = 3 To 6
.Add(indx, 3.1113213132)
Next
End With

Now when I try to retrieve the value for a particular key (say for example: ht(5)), I get the value as "Nothing" but on the other hand if I change the datatype of the variable indx to Int32, it works absolutely fine.

So my question is whether or not the hashtable support a key of type Short (Int16 in .NET Framework)?

Regards,
Aads

[nukefusion]

My guess is that when you write ht(5), the compiler interprets the 5 as an Integer (Int32) and that is why it fails, as your keys are of type Int16.

Take the following code for example. The first attempt to get the value will fail, the second will succeed.

  Dim ht As Hashtable = New Hashtable
        With ht
            For indx As Short = 3 To 6
                .Add(indx, 3.1113213132)
            Next
        End With
        Dim o As Object

        ' This attempt will fail
        o = ht(5)

        ' This attempt succeeds
        Dim s As Short = 5
        o = ht(s)

[Aads]

Hi,

Many thanks for letting me know the reason! I appreciate it.


Cheers,
Aads