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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...21 22 23 24 25 26 27 28 29 30 ... Item 25001 to 26000 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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