＆＃39; DataGrid1中＆＃39;没有宣布。由于其保护级别，它可能无法访问。 vb.net

Question

请帮助： 调试时我收到此错误 ＆＃39; DataGrid1中＆＃39;没有宣布。由于其保护级别，它可能无法访问。 vb.net

整个代码如下：

Imports System.Data.SqlClient
Public Class Form1

    Inherits System.Windows.Forms.Form
        Create ADO.NET objects.
        Private myConn As SqlConnection
        Private myCmd As SqlCommand
        Private myReader As SqlDataReader
        Private results As String
    Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load

        'Create a Connection object.
        myConn = New SqlConnection("Initial Catalog=dbo.DispatchedBranches;User ID=Guestdmin2;Password=KL9791/*" &
                "Data Source=LP2012-HP\SQLEXPRESS;Integrated Security=SSPI;")

        'Create a Command object.
        myCmd = myConn.CreateCommand
        myCmd.CommandText = "SELECT FirstName, LastName FROM DispatchedBranches"

        'Open the connection.
        myConn.Open()

        myReader = myCmd.ExecuteReader()

        'Concatenate the query result into a string.
        Do While myReader.Read()
            results = results & myReader.GetString(0) & vbTab &
        myReader.GetString(1) & vbLf
        Loop
        'Display results.
        MsgBox(results)

        'Insert a line of code before the DataReader and Connection objects are closed in the Form1_Load event procedure. 
        'The end of the procedure should appear as follows

        SqlDataAdapter1.Fill(DataSet1, "DispatchedBranches")
        myReader.Close()
        myConn.Close()


    End Sub

    Private Sub DataGridView1_CellContentClick(sender As Object, e As DataGridViewCellEventArgs) Handles DataGridView1.CellContentClick


        DataGrid1.SetDataBinding(DataSet1, "DispatchedBranches")
    End Sub
End Class