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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...261 262 263 264 265 266 267 268 269 270 ... Item 261001 to 262000 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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