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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...191 192 193 194 195 196 197 198 199 200 ... Item 197001 to 198000 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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