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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 234001 to 235000 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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