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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 249001 to 250000 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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