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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...261 262 263 264 265 266 267 268 269 270 ... Item 269001 to 270000 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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