Define your own collection for ObjectDataSource : ObjectDataSource « ADO.net Database « ASP.Net






Define your own collection for ObjectDataSource


<%@ page language="C#" %>

<%@ import namespace="System" %>
<%@ import namespace="System.Web" %>
<%@ import namespace="System.Collections.Generic" %>

<script runat="server" language="c#">

public class Person {
    private int id;
    private string firstname;
    private string lastname;

    public Person(int id, string firstname, string lastname) {
        this.id = id;
        this.firstname = firstname;
        this.lastname = lastname;
    }

    public int Id {
        get { return this.id; }
        set { this.id = value; }
    }

    public string Firstname {
        get { return this.firstname; }
        set { this.firstname = value; }
    }

    public string Lastname {
        get { return this.lastname; }
        set { this.lastname = value; }
    }
}

public class PersonCollection : List<Person> {

    public void Remove(int id) {
        Person person = this.FindPersonById(id);
        if (person != null) {
            base.Remove(person);
        }
    }

    public Person FindPersonById(int id) {
        foreach (Person person in this) {
            if (person.Id.Equals(id)) {
                return person;
            }
        }
        return null;
    }
}

public class PersonManager {

    private const string personsKey = "persons";

    public PersonCollection SelectPersons() {
        HttpContext context = HttpContext.Current;

        if (context.Application[personsKey] == null) {
            PersonCollection persons = new PersonCollection();

            persons.Add(new Person(0, "A", "B"));
            persons.Add(new Person(1, "C", "D"));
            persons.Add(new Person(2, "E", "F"));
            context.Application[personsKey] = persons;
        }

        return (context.Application[personsKey] as PersonCollection);
    }
}

</script>

<html>
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form runat="server">
        <asp:gridview id="GridView1" 
                      runat="server" 
                      datasourceid="ObjectDataSource1">
            <alternatingrowstyle backcolor="Red">
            </alternatingrowstyle>
            <pagerstyle forecolor="Black" 
                        font-italic="False" 
                        font-bold="False" 
                        horizontalalign="Center"
                        backcolor="#999999">
            </pagerstyle>

            <selectedrowstyle forecolor="White" 
                              backcolor="#008A8C" 
                              font-italic="False" 
                              font-bold="True">
            </selectedrowstyle>

            <rowstyle forecolor="Black" 
                      backcolor="#EEEEEE" 
                      font-italic="False" 
                      font-bold="False">
            </rowstyle>
            <headerstyle forecolor="White" 
                         backcolor="#000084" 
                         font-italic="False" 
                         font-bold="True">
            </headerstyle>
            <footerstyle forecolor="Black" 
                         backcolor="#CCCCCC" font-italic="False" font-bold="False">
            </footerstyle>
        </asp:gridview>
        <asp:objectdatasource id="ObjectDataSource1" runat="server" typename="PersonManager" selectmethod="SelectPersons">
        </asp:objectdatasource>

    </form>
</body>
</html>

 








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4.Using Different Parameter Types
5.Passing Objects as Parameters
6.Filtering Data
7.Handling ObjectDataSource Control Events
8.Handling Method Errors
9.Handling the Object Creating Event
10.Concurrency and the ObjectDataSource Control, ConflictDetection: CompareAllValues / OverwriteChanges
11.Creating a Custom ObjectDataSource Control
12.Creating Custom Parameter Objects
13.Creating a Page Property Parameter
14.objectdatasource with control parameter
15.GridView with ObjectDataSource
16.ObjectDataSource with selectmethod, deletemethod, updatemethod, insertmethod
17.ObjectDataSource based on XML
18.ObjectDataSource and backend database