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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...131 132 133 134 135 136 137 138 139 140 ... Item 137001 to 138000 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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