Visual C#通用模块开发：后台管理员模块[2]

关键字：c#objCommand.CommandText += " AND USERS.NICKNAME LIKE @NICKNAME";
            // 设置Sql语句参数类型
            objCommand.Parameters.Add("USERNAME", SqlDbType.VarChar);
            objCommand.Parameters.Add("NICKNAME", SqlDbType.VarChar);
            // Sql语句参数赋值
            objCommand.Parameters["USERNAME"].Value = "%" + tbxUserName.Text.Trim() + "%";
            objCommand.Parameters["NICKNAME"].Value = "%" + tbxNickName.Text.Trim() + "%";
            //这里使用DataAdapter和DataSet获取数据
    DataSet objDataset = new DataSet();
            SqlDataAdapter objAdapter = new SqlDataAdapter(objCommand);
            try
            {
                // 打开数据库连接
                if (objConnection.State == ConnectionState.Closed)
                {
                     objConnection.Open();
                }