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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...181 182 183 184 185 186 187 188 189 190 ... Item 182001 to 183000 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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