protected void btnSave_Click(object sender, EventArgs e) { string[] arr; ArrayList roleList = new ArrayList(); foreach (ListItem item in chkList.Items) { if (item.Selected) { roleList.Add(item.Text); } } arr = (string[])roleList.ToArray(typeof(string)); try { userBll.CreatUser(txtUserName.Text, txtEmail.Text, txtPassword.Text, arr); Response.Redirect("/SystemSettings/Users.aspx", false); } catch (Exception) { Response.Redirect("/SystemSettings/Users.aspx", false); } }