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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 258001 to 259000 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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