Can't Import Excel to DataGridView VB.net if that excel file not opened

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Hi,
Please Help, I have try below code to import an excel files to datagridview. It's work if excel file open by me. If excel file not open, datagridview return blank page, no header, cell, or rows. So to make it code works, I must open the excel file by office and running the application. Where is wrong?

Here's code :

VB

Imports System.Data.OleDb
Public Class Form1
    Dim conn As OleDbConnection
    Dim da As OleDbDataAdapter
    Dim ds As New DataSet
    Dim cmd As OleDbCommand
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        On Error Resume Next
        OpenFileDialog1.Filter = "(*.xls)|*.xls|(*.xlsx)|*.xlsx|All files (*.*)|*.*"
        OpenFileDialog1.ShowDialog()
        conn = New OleDbConnection("provider=Microsoft.Jet.OLEDB.4.0;" & "data source='" & OpenFileDialog1.FileName & "';Extended Properties=Excel 8.0;")
        da = New OleDbDataAdapter("select * from [Sheet1$]", conn)
        conn.Open()
        ds.Clear()
        da.Fill(ds)
        DataGridView1.DataSource = ds.Tables(0)
        TextBox1.Text = OpenFileDialog1.FileName.ToString
        conn.Close()
    End Sub
End Class

thanks, any help are appreciated :)

Posted 20-Jan-15 13:01pm

sadam.cof

Updated 14-Feb-20 2:07am

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Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 20-Jan-15 22:44pm

What is "open by me"?

sadam.cof 21-Jan-15 5:32am

Hi tadit, thanks for respond..
I mean "open by me" is a opened an excel file using office and I run my app, then import the excel file Like this http://i58.tinypic.com/121sbqe.jpg . If I just import excel file without opening the excel file on ms. office it just blank datagridview in my app Like this http://i61.tinypic.com/16780av.jpg . please help..
sorry for my bad english..
very thanks.

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sadam.cof · Accepted Answer · 2015-01-21T00:13:00

Solved,
Wrong in Connectionstring, the provider is to old an excel 2010. provider=Microsoft.Jet.OLEDB.4.0; it's must be Provider=Microsoft.ACE.OLEDB.12.0
And it works with code :

VB

Imports System.Data.OleDb
Public Class Form1
    Dim conn As OleDbConnection
    Dim da As OleDbDataAdapter
    Dim ds As New DataSet
    Dim cmd As OleDbCommand
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        On Error Resume Next
        OpenFileDialog1.Filter = "(*.xls)|*.xls|(*.xlsx)|*.xlsx|All files (*.*)|*.*"
        OpenFileDialog1.ShowDialog()
        conn = New OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;" & "data source='" & OpenFileDialog1.FileName & "';Extended Properties=Excel 8.0;")
        da = New OleDbDataAdapter("select * from [Sheet1$]", conn)
        conn.Open()
        ds.Clear()
        da.Fill(ds)
        DataGridView1.DataSource = ds.Tables(0)
        TextBox1.Text = OpenFileDialog1.FileName.ToString
        conn.Close()
    End Sub

Thanks CodeProject! :)