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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 299001 to 300000 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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