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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 296001 to 297000 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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