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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...291 292 293 294 295 296 297 298 299 300 Item 295001 to 296000 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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