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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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