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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 287001 to 288000 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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