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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...171 172 173 174 175 176 177 178 179 180 ... Item 174001 to 175000 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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