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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...31 32 33 34 35 36 37 38 39 40 ... Item 33001 to 34000 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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