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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 282001 to 283000 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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