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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...171 172 173 174 175 176 177 178 179 180 ... Item 177001 to 178000 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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