转全角半角(C#，VB.NET)

public string ToSBC(string input)

public string ToDBC(string input)

VB版本：

Public Function ToDBC()Function ToDBC(ByVal input As String) As String '转半角

Dim c As Char() = input.ToCharArray
Dim i As Integer = 0
While i < c.Length
If AscW(c(i)) = 12288 Then
c(i) = ChrW(32)
ElseIf AscW(c(i)) > 65280 AndAlso AscW(c(i)) < 65375 Then
c(i) = ChrW(AscW(c(i)) - 65248)
End If
System.Math.Min(System.Threading.Interlocked.Increment(i), i - 1)
End While
Return New String(c)
End Function