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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 250001 to 251000 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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