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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 131001 to 132000 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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