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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 145001 to 146000 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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