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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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