Comparison Operators Visual Basic Microsoft Docs. The following are the comparison operators defined in Visual Basic. Visual Basic 6 Microsoft' title='Visual Basic 6 Microsoft' />Is Operator. Is. Not Operator. Like Operator These operators compare two expressions to determine whether or not they are equal, and if not, how they differ. Is, Is. Not, and Like are discussed in detail on separate Help pages. The relational comparison operators are discussed in detail on this page. Syntax result expression. Is Is. Not object. Like pattern. Partsresult. Required. A Boolean value representing the result of the comparison. Required. Any expression. Visual Basic. NET VB. NET is a multiparadigm, objectoriented programming language, implemented on the. NET Framework. Microsoft launched VB. NET in 2002 as the. Welcome to VB6. us. Visual Basic 6 is still very alive and active. Many business have huge applications written in this great language. Wouldnt it be nice to have. Microsoft Visual Basic runtime files required by all applications. How to Learn Microsoft Visual Basic. Microsoft Visual Basic is a computer programming language used to develop programs and applications used on Windows operating. Total Visual SourceBook is a Comprehensive Source Code Library for Microsoft Access, Office, VBA and Visual Basic 6. Visual Basic books for all levels of visual basic programmers are featured and reviewed regularly. Only those Visual Basic books of highest quality appear on this site. Required. Any relational comparison operator. Required. Any reference object names. Required. Any String expression. Required. Any String expression or range of characters. 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 iflt Less thanexpression. Less than or equal toexpression. Greater thanexpression. Greater than or equal toexpression. Visual Basic 6 Microsoft' title='Visual Basic 6 Microsoft' />Equal toexpression. Not equal toexpression. Note The Operator is also used as an assignment operator. The Is operator, the Is. Not 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. For Decimal expressions, any fractional value less than 1. E 2. 8 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 Mod Operator. For more information, see Troubleshooting Data Types. Microsoft and the abandonment of Visual Basic 6. Visual Basic was the most popular programming language in the world, yet Microsoft froze its development in favour of. This tool is to analyze your Visual Basic 6. It also provides. Comparing Strings When you compare strings, the string expressions are evaluated based on their alphabetical sort order, which depends on the Option Compare setting. Madsen Hi Pro Software here. 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. Dell Xps 630I Install Xp On Windows. The following example shows a typical binary sort order. A lt B lt E lt Z lt a lt b lt e lt z lt lt lt lt lt lt Option Compare Text bases string comparisons on a case insensitive, textual sort order determined by your applications locale. When you set Option Compare Text and sort the characters in the preceding example, the following text sort order applies Aa lt lt Bb lt Ee lt lt lt ZzLocale Dependence When you set Option Compare Text, the result of a string comparison can depend on the locale in which the application is running. Two characters might compare as equal in one locale but not in another. If you are using a string comparison to make important decisions, such as whether to accept an attempt to log on, you should be alert to locale sensitivity. Consider either setting Option Compare Binary or calling the Str. Comp, which takes the locale into account. Typeless Programming with Relational Comparison Operators The use of relational comparison operators with Object expressions is not allowed under Option Strict On. When Option Strict is Off, and either expression. Object expression, the run time types determine how they are compared. The following table shows how the expressions are compared and the result from the comparison, depending on the runtime type of the operands. If operands are. Comparison is. Both String. Sort comparison based on string sorting characteristics. Both numeric. Objects converted to Double, numeric comparison. One numeric and one String. The String is converted to a Double and numeric comparison is performed. If the String cannot be converted to Double, an Invalid. Cast. Exception is thrown. Either or both are reference types other than String. An Invalid. Cast. Exception is thrown. Numeric comparisons treat Nothing as 0. String comparisons treat Nothing as an empty string. Overloading The relational comparison operators lt. 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 Operator Procedures. Notice that the Operator 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 lt operators to strings, the comparison is made using the normal alphabetical sorting order of the strings. This order can be dependent on your locale setting. Whether the sort is case sensitive or not depends on the Option Compare setting. Dim x As test. Class. Dim y As New test. Class. Insert code to run if x and y point to the same instance. In the preceding example, the first comparison returns False and the remaining comparisons return True. See Also. Invalid. Cast. Exception Operator. Operator Precedence in Visual Basic. Operators Listed by Functionality. Troubleshooting Data Types. Comparison Operators in Visual Basic.