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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 39001 to 40000 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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