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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 299001 to 300000 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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