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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 251001 to 252000 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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