【正文】 stu = new ()。 } } } ()。 查看擔(dān)任課程功能模塊截圖： 圖 413 教師查看擔(dān)任課程界面截圖 主要代碼如下： /// summary /// 初始化 DataGrid,如果查詢的數(shù)據(jù)為， DataGrid 控件隱藏，提示沒有符合條件的數(shù)據(jù) /// /summary public void DgBind() { teacher = new ()。 if(ds!=null amp。 0) { = ds。 第 18 頁 /共 24 頁 } else { = true。 } } 選課學(xué)生信息查看模塊設(shè)計(jì) 選課學(xué)生信息查看功能提供給再選選課系統(tǒng)的教師用戶，教師用戶可以通過這個(gè)功能來查看有哪些學(xué)生選擇了自己擔(dān)任的課程。 DataSet ds = ((Session[ID].ToString()))。amp。amp。 ()。 = false。下面是配置文件中的數(shù)據(jù)庫鏈接信息： appSettings !數(shù)據(jù)庫鏈接字符串 add key=ConnString value=Data Source=.\SQLEXPRESS。Integrated Security=True。 在系統(tǒng)完成以后，對系統(tǒng)的各個(gè)管理模塊進(jìn)行了添加、刪除和修改操作，并第 21 頁 /共 24 頁 且 對選課流程進(jìn)行了一次測試，系統(tǒng)都能很穩(wěn)定的工作。 結(jié)論 我這次畢業(yè)設(shè)計(jì)的目標(biāo)是建立一個(gè)在線選課系統(tǒng)，它用到的開發(fā)工具是Visual 中的 、 Visual C語言以及 SQL Server 數(shù)據(jù)庫。 在設(shè)計(jì)的開始階段為了盡快熟悉 C語言，我詳細(xì)翻閱有關(guān)該方面的資料，對書中的基本理論知識逐章逐節(jié)地分析，同時(shí)還上機(jī)操作來加深理解。在對所要應(yīng)用的技術(shù)有了一個(gè)基本認(rèn)識之后，就開始構(gòu)思自己的系統(tǒng)設(shè)計(jì)。程序代碼完成之后，要進(jìn)行運(yùn)行調(diào)試，剛開始由于沒有調(diào)試經(jīng)驗(yàn)和方法效率很低，通過老師的精心指導(dǎo)和同學(xué)的熱情幫助，現(xiàn)在終于順利完成了，自己也在設(shè)計(jì)的制作過程中學(xué)到了不少東西。 總之，幾個(gè)月的畢業(yè)設(shè)計(jì)，讓我深刻經(jīng)歷了一個(gè)項(xiàng)目從需求分析、框架設(shè)計(jì)、代碼編寫，程序調(diào)試到最終的項(xiàng)目開發(fā)成型的整個(gè)過程。 參考文獻(xiàn) [1] 郭文夷 ,戴芳勝 .C.NET 可視化程序設(shè)計(jì) [M].上海： 華東理工大學(xué)出版社 ， 2021。 [3] 閃四清 ． SQL Server 實(shí)用簡明教程 [M]．北京： 清華大學(xué)出版社 ， 2021。 [5] Ian Somerville， Software Engeering[M]．北京： 機(jī)械工業(yè)出版社 ， 2021。 [7] James ． C Design Patterns[M]．北京： 電子工業(yè)出版社 ， 2021。第 23 頁 /共 24 頁 致謝 經(jīng)過三個(gè)多月的設(shè)計(jì)和開發(fā)，在線選課系統(tǒng)基本開發(fā)完畢。在此， 我首先要感謝我的 指導(dǎo)老 師 甘剛 ， 選擇這個(gè)課題讓我能夠接觸 很多 美妙和豐富 的內(nèi)容，無論是他對我論文格式和編排的指導(dǎo)，還是在技術(shù)上的細(xì)心分析，都給予我極大的幫助。在我程序調(diào)試過程中遇到問題時(shí)，同學(xué)也給予我極大的幫助。 作者簡介： 姓 名：毛磊 性別： 男 出生年月： 1984 年 08 月 民族： 漢 Email: 第 24 頁 /共 24 頁 聲明 本論文的工作是 2021年 2 月至 2021年 6 月在成都信息工程學(xué)院 網(wǎng)絡(luò)工程 系完成的。除非另有說明，本文的工作是原始性工作。 （ 2）學(xué)?？梢圆捎糜坝?、縮印或其他復(fù)制方式保存學(xué)位論文。 （ 4）學(xué)?？稍试S學(xué)位論文被查閱或借閱。 除非另有科研合同和其他法律文書的制約，本論文的科研成果屬于成都信息工程學(xué)院。 if I pursue you I will not catch you, and if I catch youthrough your own slowness and clumsinessI will not kill you, and if I kill you I will not eat you. Nicholas had begun to back away, and at the last。s thumbnailshowing like spectators who lined the railings of his lips. Don39。 out of breath, the thumping of his own heart the only39。s long, prehuman day. For a time he listened for any sound Ignacio might m ake searching for him。s over, expecting Dr. Island to answer from somewhere。 fore and knew on which side of hunger he stood。 but his stomach revolted at the thought of the raw flesh, and he did not know how he might build a fire, although Ignacio seemed to have done so the night before. Raw fish, even if he were able to catch a fish, would be as bad, or worse, than raw monkey。 he had several times seen coconuts lying in the sand under the trees. He moved quietly, still a little afraid, trying to think of ways to open the coconut w hen he found it. He imagined himself standing before a large and raggedly fac eted stone, holding the coconut in both hands. He raised it and smashed it dow n, but when it struc k it was no longer a coconut but Maya39。 he heard her nose cartilage break with a distinct, rubbery snap. Her eyes, as blue as the sky above Madhya Pradesh, the sparkling blue sky of the egg, looked up at him, but he could no longer look into them, they retreated from his own, and it came to him quite suddenly that Lucifer, in falling, must have fallen up, into the fires and the coldness of space, never again to see the warm blues and browns and greens of Earth: 1 was watching Sa tan fall as lightning from heaven. He had heard that on tape somewhere, but he could not remember where. He had read that on Earth lightning did not e down from the clouds, but leaped up from the plane tary surface toward them, never to return. Nicholas. He listened, but did not hear his name again. Faintly water was babbling。 she looked up as she saw him, and smiled. Hello, he said. Hello, Nicholas. I thought I heard you. I wasn39。t think I said anything. He tested the dark water with his foot and found that it was very cold. 第 26 頁 /共 24 頁 You gave a little gasp, I fancy. I heard it, and I said to myself, that39。s probably given up by now. The girl nodded, looking into the dar k waters of they pool, but did not seem to have heard him. He began to wor k his way around to her, climbing across the sna kelike roots of the crowding trees. Why does Ignacio want to kill me, Diane? Sometimes he wants to kill me, too, the girl said. But why? I think he39。 did he tell you that? On= Earth. On a plantation in Brazil, way up the Amazon Dr. Island told me. I thought it was crowded on Earth. The cities are crowded, and the countryside closes to the cities. But there are places where it39。 when he was there, there wasn39。t want to be looked at, doesn39。t be sick if only there weren39。 that39。 and then a turtle and a hedgehog that turned into armadillos for the love of God, Montressor. He said, Why didn39。t I? But inside I39。ve been drinking water here, trying to drown her. I think I39。t stand up now if I tried, but she isn39。ve found out I39。m her. Turning back Nicholas asked, When was the last time you had anything to eat? I don39。m going to try to open a coconut. If I can I39。 those r obots were almost like people, and 第 27 頁 /共 24 頁 living with them would be like living with people. Nicholas wished that he could speak Brazilian. There had been the therapy robots at St. John39。 Nicholas had not liked them, and he did not think Ignacio would have liked them either. If he had liked his therapy robot he probably would not have had to be sent here. He thought of the chipped and rusted old machine that had cleaned the corridorsMaya had called it Corradora, but no one else ever called it any F thing but Hey! It could not (or at least did not) speak, 1 and Nicholas doubted that it had emotions, except possibly a sort of love of cleanness that did not extend to its own per