How to convert this code from vb6 to c#

Question

Dear All,
I'm new in C#, It's difiifcult for me to change this code in vb6 to c#
Could anybody help me to convert this code to c#
Private Static Sub ShowData(Data As String)
  Dim stx, ret, ret1 As Integer
  Dim valcom As Variant
  Dim strg As String
  strg = strg & Data
  stx = InStr(strg, Chr$(2))
 
  If stx Then
  ret = InStr(stx + 1, strg, Chr$(13))
  Else
  ret = 0
  End If
  If ret Then
  If ret - stx <> 16 Then
  strg = vbNullString
  Exit Sub
  End If
  If Len(strg) < 17 Then Exit Sub
  valcom = Val(Mid(strg, stx + 4, 6))
  If Not IsNumeric(valcom) Then
  strg = vbNullString
  Exit Sub
  End If
  ret = Asc(Mid(strg, stx + 2, 1)) And 2
  ret1 = Asc(Mid(strg, stx + 1, 1)) And 7
  strg = vbNullString
  If ret1 = 2 Then
  lbldaucan = Format(IIf(ret - 2, valcom, valcom * (-1)), "#,#")
 ElseIf ret1 = 3 Then
  lbldaucan = Format(IIf(ret - 2, valcom / 10, (valcom / 10) * (-1)), "0.0")
 ElseIf ret1 = 4 Then
  lbldaucan = Format(IIf(ret - 2, valcom / 100, (valcom / 100) * (-1)), "0.00")
 ElseIf ret1 = 5 Then
  lbldaucan = Format(IIf(ret - 2, valcom / 1000, (valcom / 1000) * (-1)), "0.000")
 End If
  'lblcom1.Caption = valcom
  If lbldaucan = "" Then
  lbldaucan = 0
 End If
  End If
End Sub