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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 69001 to 70000 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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