Create Unique Value in SSRS Dropdown Parameter

Public Shared Function RemoveDuplicates(parameter As Parameter) As String()
Dim items As Object() = parameter.Value

System.Array.Sort(items)

Dim k As Integer = 0

For i As Integer = 0 To items.Length - 1

If i > 0 AndAlso items(i).Equals(items(i - 1)) Then
Continue For

End If
items(k) = items(i)

k += 1
Next

Dim unique As [String]() = New [String](k - 1) {}

System.Array.Copy(items, 0, unique, 0, k)

Return unique
End Function






Add in Available value this code


=Code.RemoveDuplicates(parameter!dummyparameter)