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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 233001 to 234000 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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