objectdatasource with control parameter : ObjectDataSource « ADO.net Database « ASP.Net






  1. ASP.Net
  2. ADO.net Database
  3. ObjectDataSource

objectdatasource with control parameter

<%@ 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);
    }

    public Person SelectPerson(int id) {
        return this.SelectPersons().FindPersonById(id);
    }
}


</script>
<html>
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form runat="server">
        ID: <asp:textbox id="TextBox1" runat="server">0</asp:textbox>
        <asp:button id="Button1" runat="server" text="Show Person" />
        <asp:detailsview id="DetailsView1" runat="server" datasourceid="ObjectDataSource1">
        </asp:detailsview>
        <asp:objectdatasource id="ObjectDataSource1" 
                              runat="server" 
                              typename="PersonManager" 
                              selectmethod="SelectPerson">
            <selectparameters>
                <asp:controlparameter name="id" 
                                      propertyname="Text" 
                                      type="Int32" 
                                      controlid="TextBox1">
                </asp:controlparameter>
            </selectparameters>
        </asp:objectdatasource>
    </form>
</body>
</html>








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3.Using Parameters with the ObjectDataSource Control
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.Define your own collection for ObjectDataSource
15.GridView with ObjectDataSource
16.ObjectDataSource with selectmethod, deletemethod, updatemethod, insertmethod
17.ObjectDataSource based on XML
18.ObjectDataSource and backend database