Holds signed 32-bit (4-byte) integers that range in value from -2,147,483,648 through 2,147,483,647.
Remarks
The Integer data type provides optimal performance on a 32-bit processor. The other integral types are slower to load and store from and to memory.
The default value of Integer is 0.
Literal assignments
You can declare and initialize an Integer variable by assigning it a decimal literal, a hexadecimal literal, an octal literal, or (starting with Visual Basic 2017) a binary literal. If the integer literal is outside the range of Integer (that is, if it is less than Int32.MinValue or greater than Int32.MaxValue, a compilation error occurs.
In the following example, integers equal to 16,342 that are represented as decimal, hexadecimal, and binary literals are assigned to Integer values.
Dim intValue1 As Integer = 90946
Console.WriteLine(intValue1)
Dim intValue2 As Integer = &H16342
Console.WriteLine(intValue2)
Dim intValue3 As Integer = &B0001_0110_0011_0100_0010
Console.WriteLine(intValue3)
' The example displays the following output:
' 90946
' 90946
' 90946
Note
You use the prefix &h or &H to denote a hexadecimal literal, the prefix &b or &B to denote a binary literal, and the prefix &o or &O to denote an octal literal. Decimal literals have no prefix.
Starting with Visual Basic 2017, you can also use the underscore character, _, as a digit separator to enhance readability, as the following example shows.
Dim intValue1 As Integer = 90_946
Console.WriteLine(intValue1)
Dim intValue2 As Integer = &H0001_6342
Console.WriteLine(intValue2)
Dim intValue3 As Integer = &B0001_0110_0011_0100_0010
Console.WriteLine(intValue3)
' The example displays the following output:
' 90946
' 90946
' 90946
Numeric literals can also include the I type character to denote the Integer data type, as the following example shows.
Dim number = &H035826I
Programming tips
Interop Considerations. If you are interfacing with components not written for the .NET Framework, such as Automation or COM objects, remember that
Integerhas a different data width (16 bits) in other environments. If you are passing a 16-bit argument to such a component, declare it asShortinstead ofIntegerin your new Visual Basic code.Widening. The
Integerdata type widens toLong,Decimal,Single, orDouble. This means you can convertIntegerto any one of these types without encountering a OverflowException error.Type Characters. Appending the literal type character
Ito a literal forces it to theIntegerdata type. Appending the identifier type character%to any identifier forces it toInteger.Framework Type. The corresponding type in the .NET Framework is the Int32 structure.
Range
If you try to set a variable of an integral type to a number outside the range for that type, an error occurs. If you try to set it to a fraction, the number is rounded up or down to the nearest integer value. If the number is equally close to two integer values, the value is rounded to the nearest even integer. This behavior minimizes rounding errors that result from consistently rounding a midpoint value in a single direction. The following code shows examples of rounding.
' The valid range of an Integer variable is -2147483648 through +2147483647.
Dim k As Integer
' The following statement causes an error because the value is too large.
k = 2147483648
' The following statement sets k to 6.
k = 5.9
' The following statement sets k to 4
k = 4.5
' The following statement sets k to 6
' Note, Visual Basic uses banker’s rounding (toward nearest even number)
k = 5.5
See also
Int32
Data Types
Long Data Type
Short Data Type
Type Conversion Functions
Conversion Summary
Efficient Use of Data Types



