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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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