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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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