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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 132001 to 133000 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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