Comparison Operators (Visual Basic) • • 5 minutes to read • Contributors • • • • • • In this article The following are the comparison operators defined in Visual Basic. Operator >= operator = operator operator These operators compare two expressions to determine whether or not they are equal, and if not, how they differ. Is, IsNot, and Like are discussed in detail on separate Help pages.
This tutorial will quite simply show you how to download Visual Basic 2008. Visual Basic 2008 is the application that is used in the early tutorials for VB.NET but a new version has been released, Visual Basic 2010. VB.NET Tutorial, VB.NET Help and VB.NET Source code for beginners and advanced users. In VB.NET, the Handles keyword is used to make the sub Button1_Click a handler for the Click event of the object Button1. In Visual Basic 6. How can the answer be improved? Visual Basic is engineered for productively building type-safe and object-oriented applications. Visual Basic enables developers to target Windows, Web, and mobile devices. As with all languages targeting the Microsoft.NET Framework, programs written in Visual Basic benefit from security and.
Windows Messener on this page. The relational comparison operators are discussed in detail on this page. Syntax result = expression1 comparisonoperator expression2 result = object1 [Is IsNot] object2 result = string Like pattern Parts result Required. A Boolean value representing the result of the comparison. Expression Required.
Any expression. Comparisonoperator Required. Any relational comparison operator. Object1, object2 Required.
Any reference object names. String Required. Any String expression. Pattern Required. Any String expression or range of characters. Remarks The following table contains a list of the relational comparison operators and the conditions that determine whether result is True or False. Operator True if False if = expression2 expression2 >(Greater than) expression1 >expression2 expression1 = (Greater than or equal to) expression1 >= expression2 expression1 expression2 (Not equal to) expression1 expression2 expression1 = expression2.
Note The is also used as an assignment operator. The Is operator, the IsNot operator, and the Like operator have specific comparison functionalities that differ from the operators in the preceding table. Comparing Numbers When you compare an expression of type Single to one of type Double, the Single expression is converted to Double. This behavior is opposite to the behavior found in Visual Basic 6. Similarly, when you compare an expression of type Decimal to an expression of type Single or Double, the Decimal expression is converted to Single or Double.
How To Open Srt Files. For Decimal expressions, any fractional value less than 1E-28 might be lost. Such fractional value loss may cause two values to compare as equal when they are not.
For this reason, you should take care when using equality ( =) to compare two floating-point variables. It is safer to test whether the absolute value of the difference between the two numbers is less than a small acceptable tolerance.
Floating-point Imprecision When you work with floating-point numbers, keep in mind that they do not always have a precise representation in memory. This could lead to unexpected results from certain operations, such as value comparison and the. For more information, see. Comparing Strings When you compare strings, the string expressions are evaluated based on their alphabetical sort order, which depends on the Option Compare setting. Option Compare Binary bases string comparisons on a sort order derived from the internal binary representations of the characters.
The sort order is determined by the code page. The following example shows a typical binary sort order.
A, >=, =, ) can be overloaded, which means that a class or structure can redefine their behavior when an operand has the type of that class or structure. If your code uses any of these operators on such a class or structure, be sure you understand the redefined behavior. For more information, see.
Notice that the can be overloaded only as a relational comparison operator, not as an assignment operator. Example The following example shows various uses of relational comparison operators, which you use to compare expressions. Relational comparison operators return a Boolean result that represents whether or not the stated expression evaluates to True. When you apply the >and.
- by admin