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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 62001 to 63000 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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