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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 234001 to 235000 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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