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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 299001 to 300000 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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