How to access cell in DataGridView using a Switch statement

I have the following code... currently I am using a switch statement which looks for the content of one of the cells in the DGV... I want to change the switch statement to look for the row number of the DGV, (i.e. the case statement would be "case 0:, case 1:, etc)...  I can't see anyway to get the row number for the switch statement...

Help please?

DataTable dt = new DataTable();
            FbDataAdapter da = new FbDataAdapter("SELECT * from tUploadInfo", mainForm.bookConn);
            da.Fill(dt);  //  fill datatable

            if (dgv1.Rows.Count > 0)
                try {
                    dgv1.Rows.Clear();  //  clear the old crappola out...
                }
                catch (Exception)  //  can't clear the first time... donno why
                {
                    ;
                }

            dgv1.Columns.Clear();
            dgv1.DataSource = dt;

            dgv1.Columns[0].HeaderText = "Listing Service";
            dgv1.Columns[0].MinimumWidth = 120;
            dgv1.Columns[1].HeaderText = "User ID";
            dgv1.Columns[1].MinimumWidth = 140;
            dgv1.Columns[2].HeaderText = "Password";
            dgv1.Columns[2].MinimumWidth = 80;
            dgv1.Columns[3].HeaderText = "FTP Address";
            dgv1.Columns[3].MinimumWidth = 160;
            dgv1.Columns[4].HeaderText = "FTP Directory";
            dgv1.Columns[4].MinimumWidth = 105;
            dgv1.Columns[5].HeaderText = "File Format";
            dgv1.Columns[5].MinimumWidth = 10;

            foreach (DataGridViewRow dataRow in dgv1.Rows) {
                if (dataRow.Cells[0].Value == null)
                    continue;

                switch (dataRow.Cells[0].Value.ToString())  //  move the data to internal strings  <------------------------ TODO
                {
                    case "A1 Books":
                        mainForm.A1BooksUID = dataRow.Cells[1].Value.ToString();
                        mainForm.A1BooksPwd = dataRow.Cells[2].Value.ToString();
                        break;
                    case "ABE":
                        mainForm.ABEUID = dataRow.Cells[1].Value.ToString();
                        mainForm.ABEPwd = dataRow.Cells[2].Value.ToString();
                        break;
                    case "Alibris":
                        mainForm.AlibrisUID = dataRow.Cells[1].Value.ToString();
                        mainForm.AlibrisPwd = dataRow.Cells[2].Value.ToString();
                        break;

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