private void btnSearch_Click(object sender, EventArgs e) { //Populate DataGrid DataSet ds = new DataSet(); if (cboBeds.SelectedItem == null) { grdProperties.DataSource = Property.getSpecificProps(ds, cboTown.Text).Tables["ss"]; } else { grdProperties.DataSource = Property.getSpecificProps(ds, cboTown.Text, Convert.ToInt32(cboBeds.Text)).Tables["ss"]; } grdProperties.Visible = true; }