how to get the fix substring from dynamic string content? - vb.net

Question

I am developing VB.NET windows app. in VS 2010.
I want to get the substring
$CostCenterId|4^10
from the below string .
PaymentMode|NEFT^$IsPaid|False^$Currency|INR-Indian
Rupee^$CostCenterId|4^10$LedgerId|2^3$
The position of current string ($CostCenterId|4^10) in the sequence may be change.
but it will always between the two $ sign.
I have written the below code, but confused abt what to write next ?
Public Sub GetSubstringData()
dim sfullString = "PaymentMode|NEFT^$IsPaid|False^$Currency|INR-Indian
Rupee^$CostCenterId|4^10$LedgerId|2^3$"
Dim CostIndex As Integer
CostIndex = sDiscription.IndexOf("CostCenterId")
sDiscription.Substring(CostIndex,
End Sub

Answer 1

Have a look into the Split function of a string. This allows you to split a string into substrings based on a specified delimiting character.
You can then do this:
Dim sfullString = "PaymentMode|NEFT^$IsPaid|False^$Currency|INR-Indian Rupee^$CostCenterId|4^10$LedgerId|2^3$"
Debug.WriteLine("$" + sfullString.Split("$"c)(3))
Result: $CostCenterId|4^10
You will probably want to do some error checking to make sure the string actually contains the data you expect though.
However looking at the data, what you have is a string containing key-value pairs so you would be better to have a property to hold the CostCenterId and extract the data like this:
Public Property CostCenterId As String
Public Sub Decode(ByVal code As String)
For Each pair As String In code.Split("$"c)
If pair.Length > 0 AndAlso pair.Contains("|") Then
Dim key As String = pair.Split("|"c)(0)
Dim value As String = pair.Split("|"c)(1)
Select Case key
Case "CostCenterId"
Me.CostCenterId = value
End Select
End If
Next
End Sub
Then call it like this:
Decode("PaymentMode|NEFT^$IsPaid|False^$Currency|INR-Indian Rupee^$CostCenterId|4^10$LedgerId|2^3$")

Answer 2

Why not split() the string by $ into an array, and then look for the element which contains CostCenterId

Answer 3

This should work:
Dim token = "$CostCenterId"
Dim costIndexStart As Integer = sfullString.IndexOf(token)
Dim costIndexEnd As Integer = sfullString.IndexOf("$", costIndexStart + token.Length)
Dim cost As String = sfullString.Substring(costIndexStart, costIndexEnd - costIndexStart + 1)
Result: "$CostCenterId|4^10$"
If you want to omit the dollar-signs:
Substring(costIndexStart + 1, costIndexEnd - costIndexStart - 1)

Answer 4

Try something like this:
Dim CostIndex As Integer
CostIndex = sDiscription.IndexOf("CostCenterId")
auxNum = sDiscription.IndexOf("$"c, CostIndex) - CostIndex
sResult = sDiscription.SubString(CostIndex, auxNum)

Answer 5

Your string,
Dim xString = "PaymentMode|NEFT^$IsPaid|False^$Currency|INR-Indian Rupee^$CostCenterId|4^10$LedgerId|2^3$"
Substring process,
xString = xString.Substring(xString.IndexOf("$CostCenter"), xString.IndexOf("$", xString.IndexOf("$CostCenter") + 1) - xString.IndexOf("$CostCenter"))

Answer 6

Try this Code:
Dim sfullString = "PaymentMode|NEFT^$IsPaid|False^$Currency|INR-Indian" _
& "Rupee^$CostCenterId|4^10$LedgerId|2^3$"
Dim sp() As String = {"$"}
Dim ar() As String = sfullString.Split(sp, StringSplitOptions.RemoveEmptyEntries)
Array.Sort(ar)
MsgBox("$" & ar(0))