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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 237001 to 238000 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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