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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 298001 to 299000 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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