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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...261 262 263 264 265 266 267 268 269 270 ... Item 266001 to 267000 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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