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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 290001 to 291000 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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