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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...201 202 203 204 205 206 207 208 209 210 ... Item 200001 to 201000 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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