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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 247001 to 248000 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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