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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 209001 to 210000 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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