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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 253001 to 254000 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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