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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 256001 to 257000 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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