C# Problems with background worker - progress bar

[Wheels012]

Good morning all. I am coming up with an error: Cross-thread operation not valid. Attempted to access from a thread other than the thread it was created on. My code:

private void btnSubmit_Click(object sender, EventArgs e)
{

        if (tbRACFID.Text == string.Empty)
        {
            MessageBox.Show("You must have a RACFID in order to continue.", "RACFID Field Validation", MessageBoxButtons.OK, MessageBoxIcon.Stop);
            ff.ControlSetFocus(tbRACFID);
            return;
        }
        if (tbUserName.Text == string.Empty)
        {
            MessageBox.Show("You must have a User Name in order to continue.", "User Name Field Validation", MessageBoxButtons.OK, MessageBoxIcon.Stop);
            ff.ControlSetFocus(tbUserName);
            return;
        }

        PwdSecurity p = new PwdSecurity();
        uipc = this.Parent as UIPCMainForm;
        string strContainer = cbEndUserDepart.SelectedValue.ToString() + tbRACFID.Text.ToLower();
        DAL d = new DAL(uipc.StrUserName, p.base64Decode(uipc.StrPassword));

        this.backgroundWorker1.RunWorkerAsync();

        btnReset.PerformClick();
    }

private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
PwdSecurity p = new PwdSecurity();
uipc = this.Parent as UIPCMainForm;
string strContainer = cbEndUserDepart.SelectedValue.ToString() + tbRACFID.Text.ToLower(); //ERROR Line
DAL d = new DAL(uipc.StrUserName, p.base64Decode(uipc.StrPassword));

        BackgroundWorker worker = (BackgroundWorker)sender;

        //Obtain Propper Subnet IP Address based on the Router Type from the Routr table, and
        //the DMVPN Subnet Type from the SubntSize table

        string SubnetIPAddress = string.Empty;
        DataSet ds = new DataSet();
        ds = d.FillDropDowns(4); //Subnet Size IP
        foreach (DataRow dr in ds.Tables\[0\].Rows)
        {
            if (
                dr\["ROUTR\_TYPE"\].ToString() == cbRouter.Text &&
                dr\["LOC"\].ToString() == cbLocation.SelectedValue.ToString())
            {
                SubnetIPAddress = dr\["SUBNT\_IPADR"\].ToString();
            }
        }

        d.importContainer(
        strContainer,
        tbUserName.Text,
        cbRouter.SelectedValue.ToString(),
        (int)arSubNetList\[

[Luc Pattyn]

Hi, Here[^] is the full description of your problem. :)

Luc Pattyn [Forum Guidelines] [My Articles]

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[Druuler]

but isnt the purpose of backgroundworker that u dont need to explicitly invoke the controls? if i call worker.ReportProgress i dont need to invoke the controls and they are updated without cross threading exceptions! i might have missed but idont see you calling worker.ReportProgress from your worker_DoWork method?

modified on Tuesday, August 4, 2009 11:37 AM

[Luc Pattyn]

Two of the BGW events are handled on the main thread; and obviously DoWork is not, otherwise nothing would be going on in the background. :)

Luc Pattyn [Forum Guidelines] [My Articles]

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[Wheels012]

Thank you Luc.