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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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