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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...281 282 283 284 285 286 287 288 289 290 ... Item 289001 to 290000 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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