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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 232001 to 233000 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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