I have the following code but i'd like my data to be added to the excel file each time i input information instead of overwriting the same cell. (Find the next empty cell and add textbox1.text data to it)
Imports Excel = Microsoft.Office.Interop.Excel
Public Class Form1
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
    Dim xlApp As New Excel.Application
    Dim xlWorkBook As Excel.Workbook
    Dim xlWorkSheet As Excel.Worksheet
    Try
        xlApp.DisplayAlerts = False
        xlWorkBook = xlApp.Workbooks.Add
        xlWorkSheet = DirectCast(xlWorkBook.Sheets("Sheet1"), Excel.Worksheet)
        xlApp.Visible = False 'Don't show Excel; we can and we don't have too
        xlWorkSheet.Cells(1, 1) = TextBox1.Text
        xlWorkBook.SaveAs("C:\Temp\Book1.xlsx", FileFormat:=56) 'Save the workbook
        xlWorkBook.Close() 'Close workbook
        xlApp.Quit() 'Quit the application
        'Release all of our excel objects we used...
        ReleaseObject(xlWorkSheet)
        ReleaseObject(xlWorkBook)
        ReleaseObject(xlApp)
    Catch ex As Exception
    End Try
End Sub
Public Shared Sub ReleaseObject(ByVal obj As Object)
    Try
        System.Runtime.InteropServices.Marshal.ReleaseComObject(obj)
    Catch ex As Exception
        obj = Nothing
    Finally
        GC.Collect()
    End Try
End Sub
End Class
Please help!
 
    