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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...211 212 213 214 215 216 217 218 219 220 ... Item 212001 to 213000 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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