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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 134001 to 135000 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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