New Generation Vehicle Tracking Telematics
From simply using GPS tracking for basic vehicle location to today's integrated technology systems, telematics vehicle tracking? technology has rapidly evolved in recent years, and can provide fleet control rooms with comprehensive data reporting on both vehicle performance and driver behaviour.
As simple or as complex as an individual business will require, ?new generation vehicle tracking systems are infinitely versatile and flexible, enabling customisable solutions to be implemented. Any size fleet, whether local region SME to mid size and national cross boundary operations, can benefit from a bespoke telematics specification.
There are a number of key investment benefits, which are directly obtainable from running-cost reductions and increased productivity. Selectively identifying and updating the perception of a web based gps vehicle tracking system as being directly applicable to a particular type of fleet operation, is essential to assist prospective fleet owners.
Installing realtime vehicle tracking is no longer simply about instructing drivers on the shortest delivery routes and having an accurate record of daily time sheets. In today's competitive industry, installation of fleet gps tracking involves implementation of essential technology infrastructure to provide vital control over every aspect of the monitoring of daily fleet delivery movements and running costs.
Strongly Typed Data Controls in asp.net 5
Strongly Typed Data Controls
The next release of ASP.NET provides the ability to enable strongly-typed data templates. Specifically, we’ve added the ability to declare what type of data a control is going to be bound to, by way of a new “ModelType” property on data controls. Setting this property will cause two new typed variables to be generated in the scope of the data-bound template expressions: Item and BindItem.
Developers can use these variables in data-binding expressions and get full Intellisense and compile-time checking support. For example, below we’ve set the ModelType on an <asp:repeater> control to be a “Customer” object. Once we do this we can switch from using Eval(“FirstName”) to instead use Item.FirstName to reference the property.
We get full Visual Studio code intellisense when we do so:
For 2-way data-binding expressions, we can also now use the BindItem variable and get the same strongly-typed benefits:
<asp:FormView ID="editCustomer" runat="server">
<EditItemTemplate>
<div>
First Name:
<asp:TextBox ID="firstName" Text='<%# BindItem.FirstName %>' runat="server" />
</div>
<div>
Last Name:
<asp:TextBox ID="lastName" Text='<%# BindItem.LastName %>' runat="server" />
</div>
<asp:Button runat="server" CommandName="Update" />
</EditItemTemplate>
</asp:FormView>
ViewState is responsible for maintaining data across the Page Post Back
Does ViewState is responsible for maintaining data across the Page Post Back for Postback controls (like textbox, dropdownlist) and non-postbackcontrols(like label)?
It is false. For NonPostback controls it is true but for postback controls, ASP.NET retrieves their values one by one from the HTTP request and copies them to the control values while creating the HTTP response.
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ASP.NET – HTML Server Controls
HTML server controls are HTML tags understood by the server.
HTML elements in ASP.NET files are, by default, treated as text. To make these elements programmable, add a runat="server" attribute to the HTML element. This attribute indicates that the element should be treated as a server control. The id attribute is added to identify the server control. The id reference can be used to manipulate the server control at run time.
Note: All HTML server controls must be within a <form> tag with the runat="server" attribute. The runat="server" attribute indicates that the form should be processed on the server. It also indicates that the enclosed controls can be accessed by server scripts.
In the following example we declare an HtmlAnchor server control in an .aspx file. Then we manipulate the HRef attribute of the HtmlAnchor control in an event handler (an event handler is a subroutine that executes code for a given event). The Page_Load event is one of many events that ASP.NET understands:
| <script runat="server"> Sub Page_Load link1.HRef="http://www.jack-fx.com" End Sub </script> <html> <form runat="server"> </body> |
The executable code itself has been moved outside the HTML.
ASP.NET Validation Server Controls
CompareValidator Compares the value of one input control to the value of another input control or to a fixed value
CustomValidator Allows you to write a method to handle the validation of the value entered
RangeValidator Checks that the user enters a value that falls between two values
RegularExpressionValidator Ensures that the value of an input control matches a specified pattern
RequiredFieldValidator Makes an input control a required field
ValidationSummary Displays a report of all validation errors occurred in a Web page
HTML Server Controls
HtmlAnchor Controls an <a> HTML element
HtmlButton Controls a <button> HTML element
HtmlForm Controls a <form> HTML element
HtmlGeneric Controls other HTML element not specified by a specific HTML server control, like <body>, <div>, <span>, etc.
HtmlImage Controls an <image> HTML element
HtmlInputButton Controls <input type="button">, <input type="submit">, and <input type="reset"> HTML elements
HtmlInputCheckBox Controls an <input type="checkbox"> HTML element
HtmlInputFile Controls an <input type="file"> HTML element
HtmlInputHidden Controls an <input type="hidden"> HTML element
HtmlInputImage Controls an <input type="image"> HTML element
HtmlInputRadioButton Controls an <input type="radio"> HTML element
HtmlInputText Controls <input type="text"> and <input type="password"> HTML elements
HtmlSelect Controls a <select> HTML element
HtmlTable Controls a <table> HTML element
HtmlTableCell Controls <td>and <th> HTML elements
HtmlTableRow Controls a <tr> HTML element
HtmlTextArea Controls a <textarea> HTML element
