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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 272001 to 273000 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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