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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 243001 to 244000 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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