Writing a string to a new .csv in VB.net - vb.net

Question

I am trying to write a string to a .csv file, but unable to get it to display.
I have managed to do it in VBA, but when writing in VB.net it's not working.
I first create the file and set the headers for each column. After this I am getting information on each required attribute and writing it to a string s.
All i want to do now is write the string to the .csv file so that each attribute is in the right column under the right header.
Each time the string s simply needs to be on a new row.
This is what I have so far (I have cut out some bits of code so some syntax may look incorrect). What am i doing wrong or missing?
Sub Main()
Dim sOutput As String
' Create a header for the output file
sOutput = ("Level,Occurrence Name,Reference Name,Object type, Visibility, Path" & vbLf)
If Occs.Count > 0 Then
For i = 1 To Occs.Count
iLevel = 0
curOcc = Occs.Item(i)
GetOccurrenceData(curOcc, sOutput, oSel, False, iLevel)
Next
End If
' Write the output string to a file
Dim sPath As String
Dim bWrite As Boolean
sPath = ("C:\temp\data3.csv")
bWrite = WriteFile(sPath, sOutput)
End Sub
Sub GetOccurrenceData(curOcc As VPMOccurrence, s As String, sel As Selection, ByVal bParentHidden As Boolean, ByVal iParentLevel As Integer)
'CODE TO GET DATA REMOVED AS IRRELEVANT
' Append the output string with the data for the current occurrence.
s = (s & curLevel & "," & sName & "," & sRefName & "," & sType & "," & sVisibility & vbLf)
' Repeat this data gathering procedure on any children the current occurrence may have.
Occs = curOcc.Occurrences
If Occs.Count > 0 Then
For i = 1 To Occs.Count
GetOccurrenceData(Occs.Item(i), s, sel, bChildrenInheritNoShow, curLevel)
Next
End If

Answer 1

In GetOccurrenceData you pass in a string and change it in the method, but you did not pass it in as a ByRef so anything done to the string in the method stays in the method.
Change the header of your method to read
Sub GetOccurrenceData(curOcc As VPMOccurrence,ByRef s As String, sel As Selection, ByVal bParentHidden As Boolean, ByVal iParentLevel As Integer)
I would however recommend using a StringBuilder to accomplish what you are doing.
Like This:
Sub Main()
Dim sb As New Text.StringBuilder()
sb.AppendLine("Level,Occurrence Name,Reference Name,Object type, Visibility, Path")
If Occs.Count > 0 Then
For i = 1 To Occs.Count
iLevel = 0
curOcc = Occs.Item(i)
GetOccurrenceData(curOcc, sb, oSel, False, iLevel)
Next
End If
' Write the output string to a file
Dim sPath As String
Dim bWrite As Boolean
sPath = ("C:\temp\data3.csv")
bWrite = WriteFile(sPath, sb.ToString())
End Sub
Sub GetOccurrenceData(curOcc As VPMOccurrence, sb As Text.StringBuilder, sel As Selection, ByVal bParentHidden As Boolean, ByVal iParentLevel As Integer)
'CODE TO GET DATA REMOVED AS IRRELEVANT
' Append the output string with the data for the current occurrence.
sb.Append(curLevel).Append(",").Append(sName).Append(",").Append(sRefName).Append(",").Append(sType).Append(",").AppendLine(sVisibility)
' Repeat this data gathering procedure on any children the current occurrence may have.
Occs = curOcc.Occurrences
If Occs.Count > 0 Then
For i = 1 To Occs.Count
GetOccurrenceData(Occs.Item(i), sb, sel, bChildrenInheritNoShow, curLevel)
Next
End If
End Sub