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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 230001 to 231000 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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