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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...171 172 173 174 175 176 177 178 179 180 ... Item 172001 to 173000 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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