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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 146001 to 147000 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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