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Virtualization

ID	Contact Title	Contact Name	Country	Rating


1	Sales Consultant	Pascale Cartrain	Austria	1 2 3 4 5
2	Sales Agent	Patricio Simpson	USA	1 2 3 4 5
3	Marketing Assistant	Howard Snyder	Bulgaria	1 2 3 4 5
4	Accountant	Matti Karttunen	Germany	1 2 3 4 5
5	Owner	Antonio Moreno	Austria	1 2 3 4 5
6	Marketing Manager	Hanna Moos	England	1 2 3 4 5
7	Sales Associate	Antonio Moreno	Bulgaria	1 2 3 4 5
8	Marketing Manager	Elizabeth Lincoln	France	1 2 3 4 5
9	Owner	Antonio Moreno	Brazil	1 2 3 4 5
10	Sales Associate	Patricio Simpson	Brazil	1 2 3 4 5
11	Accountant	Jaime Yorres	Germany	1 2 3 4 5
12	Sales Agent	Matti Karttunen	England	1 2 3 4 5
13	Accountant	Matti Karttunen	Brazil	1 2 3 4 5
14	Accounting Manager	Hanna Moos	Bulgaria	1 2 3 4 5
15	Owner	Pascale Cartrain	Spain	1 2 3 4 5
16	Sales Associate	Hanna Moos	USA	1 2 3 4 5
17	Marketing Assistant	Paul Henriot	Germany	1 2 3 4 5
18	Marketing Assistant	Antonio Moreno	England	1 2 3 4 5
19	Sales Associate	Patricio Simpson	Spain	1 2 3 4 5
20	Sales Associate	Pascale Cartrain	USA	1 2 3 4 5
21	Accountant	Elizabeth Lincoln	Germany	1 2 3 4 5
22	Sales Agent	Howard Snyder	Spain	1 2 3 4 5
23	Sales Agent	Hanna Moos	Austria	1 2 3 4 5
24	Owner	Paul Henriot	Brazil	1 2 3 4 5
25	Sales Consultant	Elizabeth Lincoln	Spain	1 2 3 4 5
26	Accounting Manager	Patricio Simpson	France	1 2 3 4 5
27	Sales Consultant	Elizabeth Lincoln	Spain	1 2 3 4 5
28	Sales Agent	Antonio Moreno	USA	1 2 3 4 5
29	Owner	Howard Snyder	Germany	1 2 3 4 5
30	Marketing Assistant	Paul Henriot	Austria	1 2 3 4 5
31	Owner	Jaime Yorres	Germany	1 2 3 4 5
32	Marketing Assistant	Paul Henriot	Italy	1 2 3 4 5
33	Accounting Manager	Matti Karttunen	USA	1 2 3 4 5
34	Owner	Pascale Cartrain	Bulgaria	1 2 3 4 5
35	Sales Representative	Patricio Simpson	Bulgaria	1 2 3 4 5
36	Accounting Manager	Hanna Moos	Spain	1 2 3 4 5
37	Sales Representative	Paul Henriot	USA	1 2 3 4 5
38	Sales Consultant	Antonio Moreno	Argentina	1 2 3 4 5
39	Sales Associate	Paul Henriot	Austria	1 2 3 4 5
40	Sales Agent	Paul Henriot	Argentina	1 2 3 4 5
41	Marketing Assistant	Paul Henriot	Argentina	1 2 3 4 5
42	Marketing Assistant	Pascale Cartrain	Italy	1 2 3 4 5
43	Sales Representative	Matti Karttunen	USA	1 2 3 4 5
44	Accounting Manager	Georg Pipps	Bulgaria	1 2 3 4 5
45	Sales Agent	Elizabeth Lincoln	Argentina	1 2 3 4 5
46	Sales Associate	Georg Pipps	France	1 2 3 4 5
47	Owner	Matti Karttunen	Argentina	1 2 3 4 5
48	Sales Manager	Georg Pipps	USA	1 2 3 4 5
49	Accountant	Howard Snyder	Germany	1 2 3 4 5
50	Sales Agent	Elizabeth Lincoln	Argentina	1 2 3 4 5
51	Accounting Manager	Antonio Moreno	Italy	1 2 3 4 5
52	Sales Representative	Hanna Moos	England	1 2 3 4 5
53	Sales Agent	Howard Snyder	Brazil	1 2 3 4 5
54	Sales Agent	Matti Karttunen	Argentina	1 2 3 4 5
55	Sales Agent	Jaime Yorres	USA	1 2 3 4 5
56	Sales Manager	Georg Pipps	USA	1 2 3 4 5
57	Accountant	Matti Karttunen	Austria	1 2 3 4 5
58	Accountant	Hanna Moos	Germany	1 2 3 4 5
59	Sales Consultant	Elizabeth Lincoln	Spain	1 2 3 4 5
60	Owner	Howard Snyder	France	1 2 3 4 5
61	Sales Representative	Hanna Moos	Italy	1 2 3 4 5
62	Owner	Pascale Cartrain	Argentina	1 2 3 4 5
63	Sales Manager	Georg Pipps	Argentina	1 2 3 4 5
64	Sales Manager	Pascale Cartrain	England	1 2 3 4 5
65	Owner	Georg Pipps	England	1 2 3 4 5
66	Sales Representative	Matti Karttunen	Italy	1 2 3 4 5
67	Sales Representative	Georg Pipps	France	1 2 3 4 5
68	Owner	Paul Henriot	England	1 2 3 4 5
69	Marketing Assistant	Elizabeth Lincoln	England	1 2 3 4 5
70	Sales Associate	Hanna Moos	USA	1 2 3 4 5
71	Accountant	Patricio Simpson	Italy	1 2 3 4 5
72	Accounting Manager	Hanna Moos	France	1 2 3 4 5
73	Accountant	Howard Snyder	Germany	1 2 3 4 5
74	Accountant	Matti Karttunen	Spain	1 2 3 4 5
75	Sales Representative	Hanna Moos	England	1 2 3 4 5
76	Sales Associate	Matti Karttunen	Italy	1 2 3 4 5
77	Sales Consultant	Matti Karttunen	Austria	1 2 3 4 5
78	Sales Representative	Hanna Moos	Austria	1 2 3 4 5
79	Sales Representative	Jaime Yorres	Argentina	1 2 3 4 5
80	Sales Consultant	Matti Karttunen	Argentina	1 2 3 4 5
81	Sales Consultant	Elizabeth Lincoln	France	1 2 3 4 5
82	Sales Representative	Patricio Simpson	Bulgaria	1 2 3 4 5
83	Sales Representative	Matti Karttunen	Bulgaria	1 2 3 4 5
84	Sales Representative	Antonio Moreno	Brazil	1 2 3 4 5
85	Owner	Georg Pipps	Germany	1 2 3 4 5
86	Sales Representative	Antonio Moreno	Brazil	1 2 3 4 5
87	Marketing Assistant	Paul Henriot	Germany	1 2 3 4 5
88	Sales Representative	Howard Snyder	Spain	1 2 3 4 5
89	Sales Associate	Pascale Cartrain	Argentina	1 2 3 4 5
90	Sales Agent	Georg Pipps	Bulgaria	1 2 3 4 5
91	Accounting Manager	Pascale Cartrain	Austria	1 2 3 4 5
92	Marketing Manager	Pascale Cartrain	Austria	1 2 3 4 5
93	Marketing Assistant	Elizabeth Lincoln	Bulgaria	1 2 3 4 5
94	Marketing Assistant	Elizabeth Lincoln	Italy	1 2 3 4 5
95	Owner	Paul Henriot	Argentina	1 2 3 4 5
96	Owner	Georg Pipps	USA	1 2 3 4 5
97	Marketing Assistant	Elizabeth Lincoln	USA	1 2 3 4 5
98	Accountant	Pascale Cartrain	Argentina	1 2 3 4 5
99	Accountant	Georg Pipps	Spain	1 2 3 4 5
100	Accountant	Patricio Simpson	Germany	1 2 3 4 5


...21 22 23 24 25 26 27 28 29 30 ... Item 25001 to 26000 of 300000 Page: of 300 GoPage size:

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Columns
- ID
- Contact Title
- Contact Name
- Country
- Rating

About this demo
C#
VB
Download demo code files
Isolate this demo as a stand-alone application

RadGrid's virtualization feature allows you to handle hundreds of thousands of rows without negatively impacting the user experience. The control achieves this thanks to its ItemsPerView property allowing you to control the number of items loaded at a time. Users can now scroll, as well as show, hide, resize and reorder columns without any waiting time.

This demo shows how quickly Telerik's ASP.NET DataGrid can handle user interactions with 300,000 items. You can configure the component to allow scrolling through the entire data set or only through the current page by using EnableCurrentPageScrollOnly property,.

<%@ Page Language="vb" AutoEventWireup="false" CodeFile="DefaultVB.aspx.vb" Inherits="Telerik.GridExamplesVBNET.Performance.Virtualization.DefaultVB" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <link href="styles.css" rel="stylesheet" />
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1"></telerik:RadAjaxLoadingPanel>
    <telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel" LoadingPanelID="RadAjaxLoadingPanel1" CssClass="demo-container">
        <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server"  AutoGenerateColumns="false"
            AllowSorting="true" GroupingEnabled="false"
            EnableHeaderContextMenu="true" AllowPaging="true" PageSize="1000" OnNeedDataSource="RadGrid1_NeedDataSource">
            <MasterTableView TableLayout="Fixed">
                <Columns>
                    <telerik:GridBoundColumn UniqueName="ID" HeaderText="ID" HeaderStyle-Width="50px" DataField="ID"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactTitle" HeaderText="Contact Title" HeaderStyle-Width="150px" DataField="ContactTitle"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactName" HeaderText="Contact Name" HeaderStyle-Width="150" DataField="ContactName"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="Country" HeaderText="Country" HeaderStyle-Width="100px" DataField="Country"></telerik:GridBoundColumn>
                    <telerik:GridRatingColumn UniqueName="Rating" HeaderText="Rating" HeaderStyle-Width="100px" DataField="Rating"></telerik:GridRatingColumn>
                </Columns>
            </MasterTableView>
            <ClientSettings ReorderColumnsOnClient="true" AllowColumnsReorder="true" ColumnsReorderMethod="Reorder">
                <Virtualization EnableVirtualization="true" InitiallyCachedItemsCount="2000"
                    LoadingPanelID="RadAjaxLoadingPanel1" ItemsPerView="100"/>
                <Scrolling AllowScroll="true" UseStaticHeaders="true" ScrollHeight="500px" />
                <Resizing AllowColumnResize="true" />
            </ClientSettings>
            <PagerStyle Mode="NextPrevNumericAndAdvanced"></PagerStyle>
        </telerik:RadGrid>
    </telerik:RadAjaxPanel>
    </form>
</body>
</html>

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