Import Sheet1 From A Selected File Into Another Workbook

I have a workbook I add report data to, in the form of imported sheets. I know how to do this with text files, but I'm lost on existing excel files. I want to add Sheet1 from one excel file to another workbook. I got this far, but I don't know how to tell the computer to import the data from Sheet1 in the old file into the new version of Sheet1 in the workbook. So I currently get a blank new sheet.


Sub OpenExcelFile()
Dim FileToOpen As String
Dim wks_exp_src As Worksheet
Dim i As Long
Dim strSourcePath As String
Dim strSourceName As String
Dim strSourceExt As String
Dim strNewShName As String
Dim strNameFinal As String
Dim FirstPos As Long
Dim bolShCreated As Boolean
ChDir ThisWorkbook.Path & "" ' "C:"