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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...211 212 213 214 215 216 217 218 219 220 ... Item 216001 to 217000 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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