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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...171 172 173 174 175 176 177 178 179 180 ... Item 176001 to 177000 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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