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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 244001 to 245000 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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