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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 135001 to 136000 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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