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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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