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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...171 172 173 174 175 176 177 178 179 180 ... Item 177001 to 178000 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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