团队项目——工大助手界面（查询部分）

工大助手

基本内容

• 工大助手（桌面版）
• 实现登陆、查成绩、计算加权平均分等功能

团队人员

• 13070002 张雨帆
• 13070003 张帆
• 13070004 崔巍
• 13070006 王奈
• 13070045 汪天米
• 13070046 孙宇辰

界面设计（查询部分）

　　使用VS2013 C# WPF制作界面。

查询界面包括若干Label显示文字，4个ComboBox分别用于选择学年，学期，课程性质和学分，两个TextBox分别用于输入想要查找的课程的名称（支持模糊查询）和显示所查询的课程的加权平均分，一个DataGrid用于显示查询到的课程信息（用户可以对查询到的信息进行不同条件的排序），两个Button“查询”“退出”分别用于查询符合用户选择条件的课程和退出登录返回登陆界面。

界面代码如下：

<Window x:Class="WpfApplication2.Window1"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="Window1" Height="600" Width="800">
    <Grid>
        <Label Content="北工大easy教务" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="10,10,0,0" Height="49" Width="251" FontSize="36" FontFamily="STLiti"/>
        <Button x:Name="exit" Content="退出" HorizontalAlignment="Left" Height="25" Margin="706,29,0,0" VerticalAlignment="Top" Width="50" Click="exit_Click"/>
        <ComboBox x:Name="schoolYear" HorizontalAlignment="Left" Height="25" Margin="80,64,0,0" VerticalAlignment="Top" Width="100">
            <ComboBoxItem IsSelected="True" Height="19.2" Margin="0,0,0,0"></ComboBoxItem>
            <ComboBoxItem>2015-2016</ComboBoxItem>
            <ComboBoxItem>2014-2015</ComboBoxItem>
            <ComboBoxItem>2013-2014</ComboBoxItem>
        </ComboBox>
        <ComboBox x:Name="credit" HorizontalAlignment="Left" Height="25" Margin="235,114,0,0" VerticalAlignment="Top" Width="100">
            <ComboBoxItem IsSelected="True" Height="19.2" Margin="0,0,0,0"></ComboBoxItem>
            <ComboBoxItem>0.5</ComboBoxItem>
            <ComboBoxItem>1.0</ComboBoxItem>
            <ComboBoxItem>1.5</ComboBoxItem>
            <ComboBoxItem>2.0</ComboBoxItem>
            <ComboBoxItem>2.5</ComboBoxItem>
            <ComboBoxItem>3.0</ComboBoxItem>
            <ComboBoxItem>3.5</ComboBoxItem>
            <ComboBoxItem>4.0</ComboBoxItem>
            <ComboBoxItem>4.5</ComboBoxItem>
            <ComboBoxItem>5.0</ComboBoxItem>
            <ComboBoxItem>5.5</ComboBoxItem>
        </ComboBox>
        <ComboBox x:Name="courseType" HorizontalAlignment="Left" Height="25" Margin="410,64,0,0" VerticalAlignment="Top" Width="150">
            <ComboBoxItem IsSelected="True" Height="19.2" Margin="0,0,0,0"></ComboBoxItem>
            <ComboBoxItem>公共必修课</ComboBoxItem>
            <ComboBoxItem>实践环节</ComboBoxItem>
            <ComboBoxItem>基础必修课</ComboBoxItem>
            <ComboBoxItem>学科基础必修课一</ComboBoxItem>
            <ComboBoxItem>学科基础必修课二</ComboBoxItem>
            <ComboBoxItem>本专业选修课</ComboBoxItem>
            <ComboBoxItem>本、跨专业选修课</ComboBoxItem>
            <ComboBoxItem>校选修课</ComboBoxItem>
            <ComboBoxItem>计算机基础选修课</ComboBoxItem>
            <ComboBoxItem>专业认知</ComboBoxItem>
            <ComboBoxItem>实践环节选修课</ComboBoxItem>
            <ComboBoxItem>公共基础必修课</ComboBoxItem>
            <ComboBoxItem>学科基础必修课</ComboBoxItem>
            <ComboBoxItem>学科基础选修课</ComboBoxItem>
            <ComboBoxItem>专业限选课</ComboBoxItem>
            <ComboBoxItem>专业任选课</ComboBoxItem>
            <ComboBoxItem>实践环节必修课</ComboBoxItem>
            <ComboBoxItem>创新实践环节</ComboBoxItem>
            <ComboBoxItem>通识教育选修课</ComboBoxItem>
            <ComboBoxItem>学科基础必修课（辅）</ComboBoxItem>
            <ComboBoxItem>专业必修课（辅）</ComboBoxItem>
            <ComboBoxItem>实践环节（辅）</ComboBoxItem>
        </ComboBox>
        <ComboBox x:Name="semester" HorizontalAlignment="Left" Height="25" Margin="235,64,0,0" VerticalAlignment="Top" Width="100">
            <ComboBoxItem IsSelected="True" Height="19.2" Margin="0,0,0,0"></ComboBoxItem>
            <ComboBoxItem>1</ComboBoxItem>
            <ComboBoxItem>2</ComboBoxItem>
            <ComboBoxItem>3</ComboBoxItem>
        </ComboBox>

        <Label Content="学    年：" HorizontalAlignment="Left" Height="25" Margin="10,64,0,0" VerticalAlignment="Top" Width="65"/>
        <Label Content="学期：" HorizontalAlignment="Left" Height="25" Margin="185,64,0,0" VerticalAlignment="Top" Width="45"/>
        <Label Content="课程性质：" HorizontalAlignment="Left" Height="25" Margin="340,64,0,0" VerticalAlignment="Top" Width="65"/>
        <Label Content="学分：" HorizontalAlignment="Left" Height="25" Margin="185,114,0,0" VerticalAlignment="Top" Width="45"/>
        <Label Content="课程名称：" HorizontalAlignment="Left" Height="25" Margin="10,114,0,0" VerticalAlignment="Top" Width="65"/>
        <TextBox x:Name="courseName" HorizontalAlignment="Left" Height="25" Margin="80,114,0,0" TextWrapping="Wrap" Text="" VerticalAlignment="Top" Width="100"/>
        <Button Content="查询" HorizontalAlignment="Left" Height="25" Margin="631,113,0,0" VerticalAlignment="Top" Width="70" Click="Button_Click"/>
        <DataGrid x:Name="dataGrid1" HorizontalAlignment="Left" Height="372" Margin="92,161,0,0" VerticalAlignment="Top" Width="609" IsReadOnly="True">
         </DataGrid>
        <Label Content="加权：" HorizontalAlignment="Left" Height="25" Margin="422,113,0,0" VerticalAlignment="Top" Width="43"/>
        <TextBox x:Name="weighting" HorizontalAlignment="Left" Height="25" Margin="470,114,0,0" TextWrapping="Wrap" Text="" VerticalAlignment="Top" Width="90" IsReadOnly="True"/>
    </Grid>
</Window>

按钮代码如下：

查询：

            string queryString = "";
            string course_Name = courseName.Text;
            string school_Year = schoolYear.Text;
            string _Semester = semester.Text;
            string course_Type = courseType.Text;
            string _Credit = credit.Text;
            DataTable dt = new DataTable();
            bool flag = false;
            if (!school_Year.Equals(""))
            {
                queryString += "学年='" + school_Year+"'";
                flag = true;
            }
            if (!course_Name.Equals(""))
            {
                if (flag)
                    queryString += " and 课程名称 like '%" + course_Name + "%'";
                else
                {
                    queryString += "课程名称 like '%" + course_Name + "%'";
                    flag = true;
                }
            }
            if (!_Semester.Equals(""))
            {
                if (flag)
                    queryString += " and 学期='" + _Semester + "'";
                else
                {
                    queryString += "学期='" + _Semester + "'";
                    flag = true;
                }
            }
            if (!course_Type.Equals(""))
            {
                if (flag)
                    queryString += " and 课程性质='" + course_Type + "'";
                else
                {
                    queryString += "课程性质='" + course_Type + "'";
                    flag = true;
                }
            }
            if (!_Credit.Equals(""))
            {
                if (flag)
                    queryString += " and 学分='" + _Credit + "'";
                else
                {
                    queryString += "学分='" + _Credit + "'";
                    flag = true;
                }
            }
            if(!flag)
                queryString = "*";
            flag = false;
            GradeHandler.LoadDataFromExcel();
            if(GradeHandler.QueryData(queryString,out dt))
            {
                dataGrid1.ItemsSource = dt.DefaultView;
            }
            double _weight;
            if(GradeHandler.CalculateWeightedMean(dt,out _weight))
                weighting.Text = Convert.ToString(Math.Round(_weight,2));
            else
                weighting.Text = "";

查询部分制作一个string queryString 用于在调用查询函数GradeHandler.QueryData（该函数详见张帆的博客）时传递用户选择的查询条件，之后查询结果返回到DataTable dt中，随后将dt中的数据显示在dataGrid中。

退出：

        private void exit_Click(object sender, RoutedEventArgs e)
        {
            MainWindow myWindow = new MainWindow();
            myWindow.Show();
            this.Close();
        }

程序查询效果图：

查询课程名称有计算机的1.0学分的课：

查询所有课程：

查询课程名称中有计算机的课程，查询结果按学分排序。