private void btnOk_Click(object sender, EventArgs e) { if (m_oldCobIdx != -1) { m_csss[cobConnectionString.Items[m_oldCobIdx].ToString()].ConnectionString = txtConnectionString.Text; m_csss[cobConnectionString.Items[m_oldCobIdx].ToString()].ProviderName = txtProviderName.Text; } foreach (KeyValuePair <string, ConnectionStringSettings> kvp in m_csss) { SecurityHelper.ChangeConnectionString(kvp.Key, kvp.Value.ConnectionString, kvp.Value.ProviderName); } }