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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 296001 to 297000 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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