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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 259001 to 260000 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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