why i use Worksheet.UsedRange.Rows.Count got wrong result

Question

In VB.NET I want to get the used rows so I wrote that:

Dim objWorksheet As Excel.Worksheet = workbook.Sheets(2)
Dim lastRow = objWorksheet.UsedRange.Rows.Coun         


        

Answer 1

Sometimes it only appears too small. Say we have:

and we run:

Sub aRowsByAnyOtherName1()
    Dim N As Long
    N = ActiveSheet.UsedRange.Rows.Count
    MsgBox N
End Sub

We see:

The reason we get 3 rather than 4 is that the top row of the worksheet is not in UsedRange!

EDIT#1:

If the "top" of the worksheet needs to be included then use:

Sub aRowsByAnyOtherName2()
    Dim N As Long, rng As Range
    Set rng = ActiveSheet.UsedRange
    N = rng.Rows.Count + rng(1).Row - 1
    MsgBox N
End Sub