How to lock or password protect the excel file where data has been exported to excel

I am exporting the data from gridview to excel by the following code

Dim Excel As Object = CreateObject("Excel.Application")
        If Excel Is Nothing Then
            MsgBox("It appears that Excel is not installed on this machine. This operation requires MS Excel to be installed on this machine.", MsgBoxStyle.Critical)
        End If
        'Make Excel visible
        Excel.Visible = True
        'Initialize Excel Sheet
        With Excel
            .SheetsInNewWorkbook = 1
            'Add header row to Excel Sheet by copying column headers from the Datagrid
            Dim Col As DataGridViewColumn
            Dim i As Integer = 1
            For Each Col In DataGridView1.Columns
                .Cells(1, i).Value = Col.HeaderText
                i += 1
            'Add data to excel sheet by looping through the rows
            'in the datagrid
            i = 2
            Dim RowItem As DataGridViewRow
            Dim Cell As DataGridViewCell
            For Each RowItem In DataGridView1.Rows
                Dim j As Integer = 1
                For Each Cell In RowItem.Cells
                    .Cells(i, j).Value = Cell.Value
                    j += 1
                i += 1
        End With
        Excel = Nothing
        MsgBox("Export to Excel Complete", MsgBoxStyle.Information)

How to save this excel file and how to protect it
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Peter KipropCommented:
to protect and save use the below code

ActiveSheet.Protect Password:=protectpassword
   ActiveWorkbook.SaveAs App.Path &  "\" & newfilename

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Add the code mentioned by Pthepebble before the Excel.Quit() line.
searchsanjaysharmaAuthor Commented:
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Visual Basic.NET

From novice to tech pro — start learning today.