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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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