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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 290001 to 291000 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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