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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 285001 to 286000 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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