如何在 Telerik RadGrid 中单击一次显示两个表行

Question

我有一个类，其中包含另外两个类，例如层次结构。当我在 Telerik RadGrid 中显示时，它应该显示如下，当我们单击第一类行时，它应该显示两行相关类，如下图所示。可以帮我做这个吗..？

Answer 1

当我回答您之前的帖子时，我只是采用了我的其他答案并对其进行了修改以实现您正在寻找的内容。下面是添加一个存储爱好信息的类。然后，我添加了所需的结构和关系（不同颜色的方块表示不同的类）：

注意：此处的更改很小，并且更改被注释为 //New Something// 因此它们应该很容易看到。

protected void Page_Load(object sender, EventArgs e)
{

}

protected void RadGrid1_Init(object sender, EventArgs e)
{
    DefineGridStructure();
}

private void DefineGridStructure()
{
    RadGrid1.MasterTableView.DataKeyNames = new string[] { "EmpId" };

    RadGrid1.Width = Unit.Percentage(98);
    RadGrid1.PageSize = 5;
    RadGrid1.AllowPaging = true;
    RadGrid1.AllowSorting = true;
    RadGrid1.PagerStyle.Mode = GridPagerMode.NextPrevAndNumeric;
    RadGrid1.AutoGenerateColumns = false;
    RadGrid1.ShowStatusBar = true;

    RadGrid1.MasterTableView.PageSize = 5;

    //Add columns
    GridBoundColumn boundColumn;
    boundColumn = new GridBoundColumn();
    boundColumn.DataField = "EmpId";
    boundColumn.HeaderText = "EmpId";
    RadGrid1.MasterTableView.Columns.Add(boundColumn);

    boundColumn = new GridBoundColumn();
    boundColumn.DataField = "Name";
    boundColumn.HeaderText = "Name";
    RadGrid1.MasterTableView.Columns.Add(boundColumn);

    boundColumn = new GridBoundColumn();
    boundColumn.DataField = "Age";
    boundColumn.HeaderText = "Age";
    RadGrid1.MasterTableView.Columns.Add(boundColumn);

    //Detail table - Orders (II in hierarchy level)
    GridTableView tableViewOrders = new GridTableView(RadGrid1);
    tableViewOrders.Width = Unit.Percentage(100);

    tableViewOrders.DataKeyNames = new string[] { "EmpId" };

    GridRelationFields relationFields = new GridRelationFields();
    relationFields.MasterKeyField = "EmpId";
    relationFields.DetailKeyField = "EmpId";
    tableViewOrders.ParentTableRelation.Add(relationFields);

    RadGrid1.MasterTableView.DetailTables.Add(tableViewOrders);

    //Add columns
    boundColumn = new GridBoundColumn();
    boundColumn.DataField = "Street";
    boundColumn.HeaderText = "Street";
    tableViewOrders.Columns.Add(boundColumn);

    boundColumn = new GridBoundColumn();
    boundColumn.DataField = "City";
    boundColumn.HeaderText = "City";
    tableViewOrders.Columns.Add(boundColumn);

    boundColumn = new GridBoundColumn();
    boundColumn.DataField = "Zip";
    boundColumn.HeaderText = "Zip";
    tableViewOrders.Columns.Add(boundColumn);


    //New Detail Table #2 - adds in a another class that stores data


    GridTableView tableViewOrders2 = new GridTableView(RadGrid1);
    tableViewOrders2.Width = Unit.Percentage(100);

    tableViewOrders2.DataKeyNames = new string[] { "EmpId" };

    GridRelationFields relationFields2 = new GridRelationFields();
    relationFields2.MasterKeyField = "EmpId";
    relationFields2.DetailKeyField = "EmpId";
    tableViewOrders2.ParentTableRelation.Add(relationFields2);

    RadGrid1.MasterTableView.DetailTables.Add(tableViewOrders2);

    //Add columns
    boundColumn = new GridBoundColumn();
    boundColumn.DataField = "HobbyName";
    boundColumn.HeaderText = "HobbyName";
    tableViewOrders2.Columns.Add(boundColumn);

}

protected void RadGrid1_NeedDataSource(object sender, GridNeedDataSourceEventArgs e)
{
    List<Employee> empList = GetEmployeeDetails();

    DataSet dataset = new DataSet("DataSet");

    System.Data.DataTable dt1 = new System.Data.DataTable();
    dt1.TableName = "Employee";
    dt1.Columns.Add("EmpId");
    dt1.Columns.Add("Name");
    dt1.Columns.Add("Age");
    dataset.Tables.Add(dt1);

    System.Data.DataTable dt2 = new System.Data.DataTable();
    dt2.TableName = "Address";
    dt2.Columns.Add("EmpId");
    dt2.Columns.Add("Street");
    dt2.Columns.Add("City");
    dt2.Columns.Add("Zip");
    dataset.Tables.Add(dt2);


    //New datatable that stores the new classes' data
    DataTable dt3 = new DataTable();
    dt3.TableName = "Hobby";
    dt3.Columns.Add("EmpId");
    dt3.Columns.Add("HobbyName");
    dataset.Tables.Add(dt3);


    foreach (Employee emp in empList)
    {
        dt1.Rows.Add(new object[] { emp.EmpId, emp.Name, emp.Age });

        foreach (Address add in emp.Address)
        {
            dt2.Rows.Add(new object[] { emp.EmpId, add.Street, add.City, add.Zip });
        }
        //New data add loop
        foreach (Hobby hob in emp.Hobby)
        {
            dt3.Rows.Add(new object[] { emp.EmpId, hob.HobbyName });
        }


    }

    RadGrid1.MasterTableView.DataSource = dataset.Tables["Employee"];
    RadGrid1.MasterTableView.DetailTables[0].DataSource = dataset.Tables["Address"];
    //Add the new table to the grid
    RadGrid1.MasterTableView.DetailTables[1].DataSource = dataset.Tables["Hobby"];
}

private List<Employee> GetEmployeeDetails()
{
    List<Employee> myEmployees = new List<Employee>();

    Employee Steve = new Employee()
    {
        Address = new List<Address>() { new Address { City = "op", Street = "thatstreet", Zip = 23312 } },
        Hobby = new List<Hobby>() { new Hobby() { HobbyName = "Skating" } },
        Age = 23,
        EmpId = "Emp1",
        Name = "SteveIsTheName"
    };


    Employee Carol = new Employee()
    {
        Address = new List<Address>() {
                    new Address { City = "op2", Street = "thatstreet2", Zip = 23313 },
                    new Address { City = "op3", Street = "thatstreet3", Zip = 23314 }},
        Hobby = new List<Hobby>() { new Hobby() { HobbyName = "Fishing" } },
        Age = 24,
        EmpId = "Emp2",
        Name = "CarolIsTheName"
    };

    myEmployees.Add(Steve);
    myEmployees.Add(Carol);

    return myEmployees;
}
}

class Employee
{
    public List<Address> Address { get; set; }

    public List<Hobby> Hobby { get; set; }

    public int Age { get; set; }

    public string Name { get; set; }

    public string EmpId { get; set; }
}

class Address
{
    public string Street { get; set; }

    public string City { get; set; }

    public int Zip { get; set; }
}

class Hobby
{
    public string HobbyName { get; set; }
}