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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...191 192 193 194 195 196 197 198 199 200 ... Item 198001 to 199000 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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