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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...71 72 73 74 75 76 77 78 79 80 ... Item 73001 to 74000 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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