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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 297001 to 298000 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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