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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 238001 to 239000 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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