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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 144001 to 145000 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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