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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...191 192 193 194 195 196 197 198 199 200 ... Item 197001 to 198000 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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