Clearing of Datagrid View

[Jeline_1]

hi everyone
my question is how to clear a datagrid view in vb.net 2010
i have tried DatGridView1.Clear() but it only works once
and i would like to clear my datagrid every time i click the load button
hers my code

Private Sub Button15_Click(sender As System.Object, e As System.EventArgs) Handles Button15.Click

        OpenFileDialog1.Title = "Please Select a File"
        OpenFileDialog1.InitialDirectory = "C:temp"
        OpenFileDialog1.ShowDialog()


    End Sub

Private Sub OpenFileDialog1_FileOk(sender As System.Object, e As System.ComponentModel.CancelEventArgs) Handles OpenFileDialog1.FileOk
        dgQuotation.DataSource = Nothing
        Dim strm As System.IO.Stream
        strm = OpenFileDialog1.OpenFile()
        strPath = OpenFileDialog1.FileName

        If Not (strm Is Nothing) Then
            dgQuotation.DataSource = Nothing
            ' Dim col As New DataGridViewTextBoxColumn
            'column declaration
            dgQuotation.ColumnCount = 43
            columnDeclaration()
            For Each line As String In System.IO.File.ReadAllLines(strPath)
                dgQuotation.Rows.Add(line.Split("!"))
            Next
            strm.Close()

        End If
    End Sub

[kRod]

Why not bind the datagridview to a bindingsource. the reset the bindingsource.
You will need a datatable or a collection but that should give you what you want. All you have to do is clear the datasource of the bindingsource and call the ResetBindings(False) method on the bindingsource

[G_Waddell]

DataGridView1.Rows.Clear() will clear the rows for you.
If you want to completely clear everything from the grid you could then add DataGirdView1.Columns.Clear() to clear the columns as well.