In the following method I want to be able clear the checkboxes if the user clicks on the NO button of the Yes/No dialog box to confirm deletion of the checked records:

private void btnDelete_Click(object sender, System.EventArgs e) {
    Cursor.Current = Cursors.WaitCursor;
    //Data source defined from invoicelist.cs
    DataTable chkInvoices;

       //Identify the variable to use in the loop below to identify the records checked.
    int Invoiceid = 0;

      //Build the criteria for the message box.
    StringBuilder InvoiceMsg = new StringBuilder();
    DialogResult returnButtonSel;
    chkInvoices = (DataTable)dataGrid1.DataSource;
    int cntChkInvoices = 0;
    while (cntChkInvoices < chkInvoices.Rows.Count)
    {
        if ((bool)chkInvoices.Rows[cntChkInvoices]["add"])
        {
            InvoiceMsg.Append(Convert.ToInt32(chkInvoices.Rows[cntChkInvoices]["invoiceid"]) + "\n\t" );
    }
    cntChkInvoices ++;
}

    if (InvoiceMsg.Length > 1)
        {
            returnButtonSel = System.Windows.Forms.MessageBox.Show(this,"Delete Checked Invoices?", "Confirm Delete", System.Windows.Forms.MessageBoxButtons.YesNo,Syste m.Windows.Forms.MessageBoxIcon.Warning);
        }
    else
        {
            returnButtonSel = MessageBox.Show("No Invoices Selected");
        }

    if( returnButtonSel == DialogResult.Yes)
    {
        //MessageBox.Show(returnButtonSel + "");
        cntChkInvoices = 0;
        while (cntChkInvoices < chkInvoices.Rows.Count)
            {
                if ((bool)chkInvoices.Rows[cntChkInvoices]["add"])
                {
                    Invoiceid = Convert.ToInt32(chkInvoices.Rows[cntChkInvoices]["invoiceid"]);
                    // Create new instance of the Invoice class from Invoice.cs
                    Invoice inv = new Invoice( Invoiceid, usersToken );
                }
                cntChkInvoices ++;
                }
                Load_Datagrid();
            }
            else
            {
                cntChkInvoices = 0;
                while (cntChkInvoices < chkInvoices.Rows.Count)
                {
                    chkInvoices.Rows[cntChkInvoices]["add"] = false;
                }
            }
        }

Any help or direction would be appreciated. Thank you.

Where are the checkboxes you want to uncheck? Can you highlight those in your codes? Also I see if( returnButtonSel == DialogResult.Yes) but I don't see an else or returnButtonSel == DialogResult.No. Where are you checking for No result? Please highlight those codes too.

tnd,

Thanks so much for your reply. The code bolded and in red is my checkboxes. I have put in the else statement the code that I've tried and it does not work. Any suggestions would be appreciated.

I finally fixed the problems with the help of a colleague. I forgot my cntChkInvoices ++ in my last while statement if the user clicked NO.

Thanks for the help anyway.