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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 231001 to 232000 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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