我是想测试我的数据库中有没有这样的记录，我自己定义了个类，然后里面写了个方法，但是老说“并非所有代码都返回值”，这改怎么写啊

    public bool addTeacher (string name)
    {
        string connstr = ConfigurationManager.ConnectionStrings["OleDBconnstr"].ConnectionString;
        string strcomm = "select teacname from teacher where teacname=" + "'" + name + "'";
        OleDbConnection conn = new OleDbConnection(connstr);
        OleDbCommand comm = new OleDbCommand(strcomm, conn);
            conn.Open();
            OleDbDataReader read = comm.ExecuteReader();
            conn.Close();
            try
            {
                if (read.HasRows)
                {
                    return true;
                }
                else
                {
                    return false;
                }
            }
            catch(Exception ex)
            {

            }
    }

已经解决了，呵呵

在最外面加个 return false 就可以了