reading excel sheet with visual basic : I'm writing the code below to read data from excel sheet and display data into a combo box in visual basic >>>
when I click run nothing display  


    Public Class Form1
        Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
            Dim MyConnection As New OleDb.OleDbConnection
            Dim MyCommand As New OleDb.OleDbCommand
            Dim filePath, sql As String
            filePath = "C:\Users\Nour\Desktop\projects\grade10\grade10\atlas.xlsx"
            sql = "Select continent from [Sheet1]"
            MyConnection.ConnectionString = $"Provider= Microsoft.Jet._OLEDB 11.0;data source = {filePath};Extended_Properties=Excel 8.0"
            MyConnection.Open()
            MyCommand.Connection = MyConnection
            MyCommand.CommandText = sql
            Dim da As New OleDb.OleDbDataAdapter
            da.SelectCommand = MyCommand
            Dim dt As New DataTable
            da.Fill(dt)
            Me.ComboBox1.DataSource = dt
            Me.ComboBox1.DisplayMember = dt.Columns(0).ToString
    
    
            MyConnection.Close()



