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Virtualization

ID	Contact Title	Contact Name	Country	Rating


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


...191 192 193 194 195 196 197 198 199 200 ... Item 191001 to 192000 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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