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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 240001 to 241000 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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