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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...111 112 113 114 115 116 117 118 119 120 ... Item 112001 to 113000 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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