题目内容

在窗体上创建三个命令按钮，名称分别为Command1、Command2和Command3，标题分别为“导入数据”、“计算”和“保存数据”，以及一个文本框，名称为Text1。编写事件过程，使得在运行时，单击“导入数据”按钮，从考生文件里读入data.txt文件(其中有20个整数)，在Text1中显示。单击“计算”，采用冒泡算法排序。单击“保存数据”，存入out.txt文件中。程序运行界面如图29所示。

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