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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...121 122 123 124 125 126 127 128 129 130 ... Item 125001 to 126000 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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