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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...171 172 173 174 175 176 177 178 179 180 ... Item 178001 to 179000 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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