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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 202001 to 203000 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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