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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...231 232 233 234 235 236 237 238 239 240 ... Item 232001 to 233000 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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