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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...271 272 273 274 275 276 277 278 279 280 ... Item 275001 to 276000 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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