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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 64001 to 65000 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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