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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 294001 to 295000 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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