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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...111 112 113 114 115 116 117 118 119 120 ... Item 110001 to 111000 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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