Visual Basic

Private Sub BtnExcel_Click(sender As Object, e As EventArgs) Handles btnExcel.Click
        Try

            Dim MyConnection As System.Data.OleDb.OleDbConnection
            Dim dataSet As System.Data.DataSet
            Dim MyCommand As System.Data.OleDb.OleDbDataAdapter
            Dim path As String = "C:\Users\Abhimanyu Singh\Documents\excel\SalarySlip.xlsx"

            MyConnection = New System.Data.OleDb.OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + path + ";Extended Properties=Excel 12.0;")
            MyCommand = New System.Data.OleDb.OleDbDataAdapter("select * from [salaryslip$]", MyConnection)

            dataSet = New System.Data.DataSet
            MyCommand.Fill(dataSet)
            DataGridView1.DataSource = dataSet.Tables(0)

            MyConnection.Close()
        Catch ex As Exception
            MsgBox(ex.Message.ToString)
        End Try

    End Sub
End Class

Dim ci As System.Globalization.CultureInfo = New System.Globalization.CultureInfo("PL-pl")
Dim format As System.Globalization.NumberStyles = System.Globalization.NumberStyles.AllowLeadingSign
Dim line As String = Console.ReadLine()
Dim number As Integer = 0

If Int32.TryParse(line, format, ci, number) Then
    Console.WriteLine($"You have entered {number}")
Else
    Console.WriteLine($"Can't convert '{line}' into number!")
End If