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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 293001 to 294000 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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