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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 131001 to 132000 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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