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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 242001 to 243000 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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