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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 292001 to 293000 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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