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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 252001 to 253000 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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