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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...91 92 93 94 95 96 97 98 99 100 ... Item 95001 to 96000 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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