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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...261 262 263 264 265 266 267 268 269 270 ... Item 260001 to 261000 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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