![]() HTTP Request result displayed in a browser:Ĩ. This example shows how to access properties of the Request object and how to call the MapPath method of the Request object, which gives you the absolute path of the page on the server: You'll often work with the Request object, which gives you information like the values of form fields on the page (text boxes, etc.), what type of browser made the request, the URL of the page, the user identity, etc. Examples include a file object's Save method, an image object's Rotate method, and an email object's Send method. Objects also have methods that are the "verbs" they can perform. Objects have properties that describe their characteristics - a text box object has a Text property, a request object has a Url property, an email message has a From property, and a customer object has a FirstName property. ![]() Much of your coding involves working with objectsĪn object represents a thing that you can program with - a page, a text box, a file, an image, a web request, an email message, a customer record (database row), etc. The value of the lastName variable is: result displayed in a browser:ħ. ' Keywords like dim are also not case sensitive. The following lines of code assign a value to the variable lastname using a lowercase name, and then output the variable value to the page using an uppercase name. Programming keywords (like Dim, If, and True) and variable names (like myString, or subTotal) can be written in any case. The Visual Basic language is not case sensitive. myQuote = "The person said: ""Hello, today is Monday."""Ħ. If you want the double quotation character to appear once in the page output, enter it as "" within the quoted string, and if you want it to appear twice, enter it as """" within the quoted string. To embed double quotation marks within a string value, insert two double quotation mark characters. To specify a string, you enclose it in double quotation marks: myString = "This is a string literal" You enclose literal string values in double quotation marksĪ string is a sequence of characters that are treated as text. Welcome to our new members who joined in result displayed in a browser:ĥ. ![]() You can insert variable values directly in a page using welcomeMessage = "Welcome, new members!" You create a new variable using the Dim keyword. You can store values in a variable, including strings, numbers, and dates, etc. Today's weather: You use variables to store values (Later in the article you'll see a way to wrap a long code statement into multiple lines if needed.) theMonth = In a Visual Basic code block, each statement ends with a line break. Inside a block, you end each code statement with a line break Today's weather: result displayed in a browser:ģ. The numeric value of the current month: outsideTemp = 79ĭim weatherMessage = "Hello, it is " & outsideTemp & " degrees." Place the opening Code keyword immediately after the character - there can't be whitespace between them. You enclose code blocks with Code.End CodeĪ code block includes one or more code statements and is enclosed with the keywords Code and End Code. You can read more about HTML encoding in Working with HTML Forms in ASP.NET Web Pages Sites. If your goal is to output HTML markup that renders tags as markup (for example for a paragraph or to emphasize text), see the section Combining Text, Markup, and Code in Code Blocks later in this article. Without HTML encoding, the output from your server code might not display correctly, and could expose a page to security risks. This replaces reserved HTML characters (such as and &) with codes that enable the characters to be displayed as characters in a web page instead of being interpreted as HTML tags or entities. When you display content in a page using the character, as in the preceding examples, ASP.NET HTML-encodes the output. The greeting is: result displayed in a browser: The value of myMessage is: greeting = "Welcome to our site!"ĭim greetingMessage = greeting & " Today is: " & weekDay.ToString() The character starts inline expressions, single-statement blocks, and multi-statement blocks: Dim total = 7 End Dim myMessage = "Hello World" End Code You add code to a page using the character This section lists a few tips that you absolutely need to know as you start writing ASP.NET server code using the Razor syntax. Website templates are installed in the root folder of your site in a folder named Microsoft Templates. You can install the Visual Basic templates by as NuGet packages. The default website templates for Microsoft WebMatrix ( Bakery, Photo Gallery, and Starter Site, etc.) are available in C# and Visual Basic versions. ![]()
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