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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 34001 to 35000 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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