I'm developing my app in VB.Net with the source below but the problem that I got, was the data not displayed completely in `DataGridView`.

```
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
    Dim conn As OleDb.OleDbConnection
    Dim dta As OleDb.OleDbDataAdapter
    Dim dts As DataSet
    Dim excelpath As String

    Dim ExcelQuery As String = "Select * From [IOT_NOVA$B12:S257]"

    Try

        If TextBox1.Text = "" Then
            MsgBox("Please select Excel file to upload!", vbExclamation)
            Exit Sub
        End If

        excelpath = TextBox1.Text
        conn = New OleDb.OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + excelpath + ";Extended Properties='Excel 12.0;HDR=YES;IMEX=1';")
        dta = New OleDb.OleDbDataAdapter(ExcelQuery, conn)

        DtSet = New DataTable
        dta.Fill(DtSet)

        DataGridView1.DataSource = DtSet

        conn.Close()
        conn.Dispose()

    Catch ex As Exception
        MsgBox(ex.Message, vbCritical)
    End Try

End Sub

```