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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 298001 to 299000 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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