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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 293001 to 294000 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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