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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 65001 to 66000 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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