如何在Telerik RadGrid中单击显示两个表行

Question

我有一个类，其中包含两个类，如层次结构。当我在Telerik RadGrid中显示时，它应该显示为，当我们点击第一类行时，它应该显示两行相关类，如下图所示。可以帮我做这个..？

Answer 1

当我回答你之前的帖子时，我只是接受了我的另一个答案并对其进行了修改以完成你想要的工作。以下是添加存储爱好信息的类。然后我添加了所需的结构和关系（不同的彩色方块表示不同的类）：

注意：此处的更改很少，更改被评为//新内容//因此应该很容易看到。

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; }
}