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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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