Excel VBA - create column names using MS Project headers - excel

Question

I'm in the middle of writing a script that populates an excel spreadsheet with data from an MS Project file. I would like the script to recognize the title name of the MS Project columns as I have a number of custom columns with different names (custom number fields are populated with different names)
The code below was my attempt, but i'm getting an error when it comes to writing the value of the task column title to the sheet, am I doing something wrong here?
Sub PopulateSheet()
Dim Proj As MSProject.Application
Dim NewProj As MSProject.Project
Dim t As MSProject.Task
Dim xl as workbook
Dim s as worksheet
Dim Newsheet as worksheet
Set Xl = ThisWorkbook
BookNam = Xl.Name
Set Newsheet = Xl.Worksheets.Add
'Code to find and open project files
Set Proj = New MSProject.Application
MsgBox ("Please Select MS Project File for Quality Checking")
'Select Project File
FileOpenType = Application.GetOpenFilename( _
FileFilter:="MS Project Files (*.mpp), *.mpp", _
Title:="Select MS Project file", _
MultiSelect:=False)
'Detect if File is selected, if not then stop code
If FileOpenType = False Then
MsgBox ("You Havent Selected a File")
Exit Sub
End If
'Write the FileOpenType variant to two separate strings
NewProjFilePath = Left$(FileOpenType, InStrRev(FileOpenType, "\"))
NewProjFileName = Mid$(FileOpenType, InStrRev(FileOpenType, "\") + 1)
Newsheet.Name = NewProjFileName
Set s = Newsheet
'Populate spreadsheet header row with column titles from MS Project
s.Range("A1").Value = t.Number1 ***<-- Error '91' - Object variable or With block variable not set***
End Sub

Answer 1

Here is generic code that loops through the fields in the active task table and prints out the field headings as displayed in the table.
Sub GetTaskTableHeaders()
Dim t As Table
Set t = ActiveProject.TaskTables(ActiveProject.CurrentTable)
Dim f As TableField
For Each f In t.TableFields
If f.Field > 0 Then
Dim header As String
Dim custom As String
custom = Application.CustomFieldGetName(f.Field)
If Len(f.Title) > 0 Then
header = f.Title
ElseIf Len(custom) > 0 Then
header = custom
Else
header = Application.FieldConstantToFieldName(f.Field)
End If
Debug.Print "Field " & f.Index, header
End If
Next f
End Sub
Note that fields can be customized at the project level to be given a different title, or they can be customized at the table level. This code looks for both customizations and if neither is found, the field name is used.

Answer 2

Try the code below, explanation inside the code's comments:
Option Explicit
Sub PopulateSheet()
Dim Proj As MSProject.Application
Dim NewProj As MSProject.Project
Dim PjTableField As MSProject.TableField ' New Object
Dim PjTaskTable As MSProject.Table ' New Object
Dim t As MSProject.task
Dim xl As Workbook
Dim s As Worksheet
Dim Newsheet As Worksheet
Dim BookName As String
Dim FileOpenType
Dim NewProjFilePath As String, NewProjFileName As String
Set xl = ThisWorkbook
BookName = xl.Name
Set Newsheet = xl.Worksheets.Add
'Code to find and open project files
Set Proj = New MSProject.Application
MsgBox ("Please Select MS Project File for Quality Checking")
'Select Project File
FileOpenType = Application.GetOpenFilename( _
FileFilter:="MS Project Files (*.mpp), *.mpp", _
Title:="Select MS Project file", _
MultiSelect:=False)
'Detect if File is selected, if not then stop code
If FileOpenType = False Then
MsgBox ("You Havent Selected a File")
Exit Sub
End If
'Write the FileOpenType variant to two separate strings
NewProjFilePath = Left$(FileOpenType, InStrRev(FileOpenType, "\"))
NewProjFileName = Mid$(FileOpenType, InStrRev(FileOpenType, "\") + 1)
Newsheet.Name = NewProjFileName
Set s = Newsheet
' Open MS-Project File
Proj.FileOpen NewProjFilePath & NewProjFileName
Set NewProj = Proj.ActiveProject
' ===== New code Section =====
' set the Table object
Set PjTaskTable = NewProj.TaskTables(NewProj.CurrentTable)
' loop through all tablefields in table
For Each PjTableField In PjTaskTable.TableFields
If PjTableField.Field = pjTaskNumber1 Then ' check if currect field numeric value equals the numeric value of "Number1"
'Populate spreadsheet header row with column titles from MS Project
s.Range("A1").Value = PjTableField.Title ' populate "A1" with the field's title and
End If
Next PjTableField
End Sub