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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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