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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 130001 to 131000 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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