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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 141001 to 142000 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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