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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 274001 to 275000 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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