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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 286001 to 287000 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="vb" AutoEventWireup="false" CodeFile="DefaultVB.aspx.vb" Inherits="Telerik.GridExamplesVBNET.Performance.Virtualization.DefaultVB" %>

<%@ 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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