In visual basic, a property is called as an auto-implemented property when creating it with only Property keyword. This is how we can create write-only properties in visual basic applications based on our requirements. When we execute above visual basic program, we will get a result like as shown below. In case, if we uncomment the commented code, we will get the compile-time error because our Uname property doesn’t contain any Get accessor to return a value. If you observe the above example, we created properties using only Set accessor with WriteOnly property to make the properties are write-only based on our requirements. Public WriteOnly Property Ulocation As StringĬonsole. Public WriteOnly Property Uname As String Visual Basic Create Write Only PropertiesĪs discussed, if property contains the only Set accessor with WriteOnly property, we will call it as write-only property. Following is the example of creating write-only properties in a visual basic programming language. This is how we can create the read-only properties in visual basic applications based on our requirements. When we execute the above visual basic program, we will get a result like as shown below. In case, if we uncomment the commented code, we will get a compile-time error because our Uname property doesn’t contain any Set accessor to set the new value. If you observe the above example, we created properties using only Get accessor with ReadOnly property to make the properties are read-only based on our requirements. Public ReadOnly Property Ulocation As Stringĭim u As User = New User ( "Suresh Dasari", "Hyderabad") Public Sub New( ByVal a As String, ByVal b As String) Visual Basic Create Read-Only PropertiesĪs discussed, if property contains only G et accessor with ReadOnly property, we will call it as read-only property. Following is the example of creating read-only properties in a visual basic programming language. If you observe the above example, our variable text converted to upper case and even after we set the variable text as “ Rohini”, it displayed text as “ Suresh Dasari” because of the Set accessor validation fails in property. When we execute the above visual basic program, we will get the result as shown below. If you observe the above example, we are extending the behaviour of private variables ( name, location) using properties ( Uname, Ulocation) with Property keyword, Get and Set accessors by performing the some validations like to make sure Uname value is equals to only “ Suresh” using Set accessor and converting property text to uppercase with Get accessor. WriteLine( "Location: " & u.Ulocation)Ĭonsole. In visual basic properties, the Get accessor will be invoked while reading the value of property and when we assign a new value to the property, then the Set accessor will be invoked by using an argument that provides a new value.įollowing is the example of invoking the Get and Set accessors of properties in a visual basic programming language.Ĭonsole. So, if you want to make any changes to this field, you can do it only by calling the property ( UName). Here the field “ name” is marked as Private. If you observe above example, we are extending the behavior of Private variable name using property called Uname with Get and Set accessors by performing some validations like to make sure Uname value is equals to “ Suresh” using Set accessor and converting the property text to uppercase with Get accessor. In visual basic, Properties won’t accept any parameters and we should not pass property as a ref or out parameter in our application.įollowing is the simple example of defining the private variable and property in a visual basic programming language. In visual basic, the properties are categorized as three types, those are.Ī property which contains a both Get and Set accessors with Property keyword, we will call it as read-write property.Ī property which contains only Get accessor with ReadOnly property, we will call it as a read-only property.Ī property which contains only Set accessor with WriteOnly property, we will call it as write-only property. Here, the Get accessor code block will be executed whenever the property is read and the code block of Set accessor will be executed whenever the property is assigned to a new value. If you observe the above syntax, we used an access modifier, Property keyword, and return type to define a property along with G et and Set accessors to make the required modifications to the class variables based on our requirements.
0 Comments
Leave a Reply. |