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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...221 222 223 224 225 226 227 228 229 230 ... Item 222001 to 223000 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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