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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 138001 to 139000 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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