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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 26001 to 27000 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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