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


...211 212 213 214 215 216 217 218 219 220 ... Item 219001 to 220000 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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