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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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