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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 138001 to 139000 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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