Datagridview and thread in vb .net

Question

2.50/5 (2 votes)

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hi all,

i'm inserting values into datagridview by using thread. A thread was inserted a value, it works well. But datagridview scroll is not working.

VB

sub download_1( )

                                    Dim fpcount As String = ""
                                    fpcount = fingertmp(bEnrollNumber.ToString).ToString.Trim
                                    If fpcount &lt;&gt; 0 Then
                                        DV2.Rows.Insert(0, 1)
                                        DV2.Rows(0).Cells(1).Value = bEnrollNumber
                                        If bName.Length = 0 Then
                                            DV2.Rows(0).Cells(2).Value = bEnrollNumber
                                        Else
                                            DV2.Rows(0).Cells(2).Value = bName
                                        End If

                                        DV2.Rows(0).Cells(3).Value = bPassword
                                        If bPrivilege = 0 Then
                                            ad1 = "User"
                                        Else
                                            ad1 = "Admin"
                                        End If
                                        DV2.Rows(0).Cells(4).Value = ad1
                                        DV2.Rows(0).Cells(5).Value = ef
                                        DV2.Rows(0).Cells(6).Value = fpcount
                                        DV2.Rows(0).Cells(7).Value = "0"
                                        DV2.Rows(0).Cells(8).Value = "0"
                                        ctemp = Convert.ToInt32(fpcount) + ctemp
                                        Me.ProgressBar1.Value = (ctemp / finger) * 100
                                        Me.ProgressBar1.Update()
                                        Me.lblprg.Text = ProgressBar1.Value &amp; "%"
                                        lblprg.Refresh()
                                    End If
   End sub

code sample moved from comment - Maciej Los

Posted 13-Mar-14 2:45am

vivekrd18

Updated 14-Mar-14 9:36am

Maciej Los

v2

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Comments

Sergey Alexandrovich Kryukov 13-Mar-14 8:55am

Without some code sample, there is nothing I can tell. Did you use Control.Invoke or Control.BeginInvoke?
—SA

Maciej Los 13-Mar-14 16:41pm

What a question?

vivekrd18 14-Mar-14 1:58am

--content has been moved to the question--

vivekrd18 14-Mar-14 1:57am

--comment has been deleted--

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Dave Kreskowiak · Accepted Answer · 2014-03-14T11:18:00

You absolutely CAN NOT TOUCH a UI control from a background thread. You will end up with very weird problems that are very difficult to reproduce and track down.

If you want to add data to a control from a background thread you have to Invoke a method that is specifically written to do this from your background thread code.

Read this[^].