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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...251 252 253 254 255 256 257 258 259 260 ... Item 252001 to 253000 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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