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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...261 262 263 264 265 266 267 268 269 270 ... Item 262001 to 263000 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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