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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 232001 to 233000 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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