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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...61 62 63 64 65 66 67 68 69 70 ... Item 68001 to 69000 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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