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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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