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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 295001 to 296000 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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