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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 140001 to 141000 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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