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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 259001 to 260000 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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