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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...261 262 263 264 265 266 267 268 269 270 ... Item 263001 to 264000 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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