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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 297001 to 298000 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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