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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 253001 to 254000 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="c#" CodeFile="DefaultCS.aspx.cs" Inherits="Telerik.GridExamplesCSharp.Performance.Virtualization.DefaultCS" %>

<%@ 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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