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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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