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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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