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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 64001 to 65000 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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