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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...51 52 53 54 55 56 57 58 59 60 ... Item 50001 to 51000 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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