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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...261 262 263 264 265 266 267 268 269 270 ... Item 261001 to 262000 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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