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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...171 172 173 174 175 176 177 178 179 180 ... Item 175001 to 176000 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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