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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 143001 to 144000 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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