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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...161 162 163 164 165 166 167 168 169 170 ... Item 169001 to 170000 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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