Question

我在C＃WPF中有一个DataGrid，我希望以有组织的方式列出数据，但问题是动态绑定列加载很难处理，因为我的类需要一个动态字段名称？

代码

public EmployeeDataGrid_BiWeek(string fromData, string untilDate, Benefit[] selectedBenefits, Employee[] selectedEmployees)
        {
            InitializeComponent();

            foreach (Benefit benefit in selectedBenefits)
            {
                var col = new DataGridTextColumn();
                col.Header = benefit.getName();
                col.Binding = new Binding(benefit.getName());
              // ^^ the above binding is based on the field name
                mainDataGrid.Columns.Add(col);
            }
            foreach (Employee emp in selectedEmployees)
            {
                mainDataGrid.Items.Add(new BiEmpGridItem(emp));
            }
        }

        public class BiEmpGridItem {
            public string Name { get;set; }
            public string Birthday { get; set;}
// need a field here with the name of the binding?
            public BiEmpGridItem(Employee ee)
            {
                this.Name = ee.lastName + ", " + ee.firstName;
                this.Birthday = ee.getDateOfBirth();
            }
        }
    }

问题

如上所示，似乎我需要在我的班级中使用与用户指定名称相同名称的字段名称。有没有办法可以使用benefit.getName（）作为名称来创建一个String字段？如果不是，如何解决绑定基于字段名称的事实？

每个员工都可以获得多重利益

Answer 1

你能做这样的事吗？

    public EmployeeDataGrid_BiWeek(string fromData, string untilDate, Benefit[] selectedBenefits, Employee[] selectedEmployees)
    {
        InitializeComponent();

        string[] benefit_name = new string[selectedBenefits.count()];
        int count = 0;
        foreach (Benefit benefit in selectedBenefits)
        {
            var col = new DataGridTextColumn();
            col.Header = benefit.getName();
            benefit_name[count] = benefit.getName();
            col.Binding = new Binding(benefit.getName());
            // ^^ the above binding is based on the field name
            mainDataGrid.Columns.Add(col);
            count++;
        }

        foreach (Employee emp in selectedEmployees)
        {
           BigEmpGridItem item = new BiEmpGridItem(emp);
           int x = ????;   // The number of the benefit for this employee
           item.BenefitName = benefit_name[x];
            mainDataGrid.Items.Add(item);
        }
    }

    public class BiEmpGridItem {
        public string Name { get;set; }
        public string Birthday { get; set;}
        public string BenefitName {get; set;}  // add this
        public BiEmpGridItem(Employee ee)
        {
            this.Name = ee.lastName + ", " + ee.firstName;
            this.Birthday = ee.getDateOfBirth();
        }
    }
}

使用列表记录每位员工的多项福利：

    public void EmployeeDataGrid_BiWeek(string fromData, string untilDate, Benefit[] selectedBenefits, Employee[] selectedEmployees)
    {
        InitializeComponent();

        List<string> benefit_names = new List<string>();
        int count = 0;

        // Get this employees selected benefits
        foreach (Benefit benefit in selectedBenefits)
        {
            var col = new DataGridTextColumn();
            col.Header = benefit.getName();
            benefit_names.Add(benefit.getName());
            col.Binding = new Binding(benefit.getName());
            // ^^ the above binding is based on the field name
            mainDataGrid.Columns.Add(col);
            count++;
        }

        // Create the grid
        foreach (Employee emp in selectedEmployees)
        {
           BiEmpGridItem item = new BiEmpGridItem(emp);
           item.BenefitName = benefit_names;
           mainDataGrid.Items.Add(item);
        }
    }

       public class BiEmpGridItem 
       {
        public string Name { get;set; }
        public string Birthday { get; set;}
        public List<string> BenefitName {get; set;}  // add this
        public BiEmpGridItem(Employee ee)
        {
            this.Name = ee.lastName + ", " + ee.firstName;
            this.Birthday = ee.getDateOfBirth();
        }
    }

Answer 2

所以我必须找到一种动态绑定数据或至少逐行插入数据的方法....

结束退出对象绑定的想法并使用了dataTable，这里是其他人的代码。

List<string> dates = new List<string>();
            DataTable dt = new DataTable();
            dt.Columns.Add("Name");
            dt.Columns.Add("BirthDate");
            foreach (String s in company.payDays)
            {
                DateTime compd = DateTime.Parse(s);
                if (compd > startDate && compd < endDate)
                {
                    dates.Add(s);
                    dt.Columns.Add(s);
                }
            }
            foreach (Employee emp in selectedEmployees)
            {
                var row = dt.NewRow();
                row["Name"] = emp.getLastName() + ", " + emp.getFirstName();
                row["BirthDate"] = emp.getDateOfBirth();
                dt.Rows.Add(row);
            }
            mainDataGrid.AutoGenerateColumns = true;
            mainDataGrid.DataContext = dt.DefaultView;

<DataGrid x:Name="mainDataGrid" DockPanel.Dock="Bottom" ItemsSource="{Binding}"  IsReadOnly="True" ClipboardCopyMode="IncludeHeader">

DataGrid Dynamic - 绑定/加载

2 个答案: