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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 251001 to 252000 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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