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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 233001 to 234000 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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