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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 296001 to 297000 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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