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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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