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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...241 242 243 244 245 246 247 248 249 250 ... Item 244001 to 245000 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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