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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 295001 to 296000 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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