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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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