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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 255001 to 256000 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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