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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 235001 to 236000 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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