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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...141 142 143 144 145 146 147 148 149 150 ... Item 149001 to 150000 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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