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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 288001 to 289000 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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