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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 282001 to 283000 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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