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class System.Random
Assembly: System.Runtime
Inheritance: object → Random
Represents a pseudo-random number generator, which is an algorithm that produces a sequence of numbers that meet certain statistical requirements for randomness.
Methods
public
string
GetHexString(int stringLength,
bool lowercase = False)
stringLength
The length of string to create.
lowercase
<para>
<see langword="true" /> if the hexadecimal characters should be lowercase; <see langword="false" /> if they should be uppercase.</para> <para>The default is <see langword="false" />.</para>
Returns A string populated with random hexadecimal characters.
Creates a string filled with random hexadecimal characters.
public
T[]
GetItems(T[] choices,
int length)
public
int
Next() Returns A 32-bit signed integer that is greater than or equal to 0 and less than <see cref="F:System.Int32.MaxValue">Int32.MaxValue</see> .
Returns a non-negative random integer.
public
int
Next(int maxValue)
maxValue
The exclusive upper bound of the random number to be generated. <paramref name="maxValue" /> must be greater than or equal to 0.
Returns A 32-bit signed integer that is greater than or equal to 0, and less than <paramref name="maxValue" /> ; that is, the range of return values ordinarily includes 0 but not <paramref name="maxValue" /> . However, if <paramref name="maxValue" /> equals 0, 0 is returned.
Returns a non-negative random integer that is less than the specified maximum.
public
int
Next(int minValue,
int maxValue)
minValue
The inclusive lower bound of the random number returned.
maxValue
The exclusive upper bound of the random number returned. <paramref name="maxValue" /> must be greater than or equal to <paramref name="minValue" /> .
Returns A 32-bit signed integer greater than or equal to <paramref name="minValue" /> and less than <paramref name="maxValue" /> ; that is, the range of return values includes <paramref name="minValue" /> but not <paramref name="maxValue" /> . If <paramref name="minValue" /> equals <paramref name="maxValue" /> , <paramref name="minValue" /> is returned.
Returns a random integer that is within a specified range.
public
void
NextBytes(byte[] buffer)
buffer
The array to be filled with random numbers.
Fills the elements of a specified array of bytes with random numbers.
public
double
NextDouble() Returns A double-precision floating point number that is greater than or equal to 0.0, and less than 1.0.
Returns a random floating-point number that is greater than or equal to 0.0, and less than 1.0.
public
long
NextInt64() Returns A 64-bit signed integer that is greater than or equal to 0 and less than <see cref="F:System.Int64.MaxValue">Int64.MaxValue</see> .
Returns a non-negative random integer.
public
long
NextInt64(long maxValue)
maxValue
The exclusive upper bound of the random number to be generated. <paramref name="maxValue" /> must be greater than or equal to 0.
Returns A 64-bit signed integer that is greater than or equal to 0, and less than <paramref name="maxValue" /> ; that is, the range of return values ordinarily includes 0 but not <paramref name="maxValue" /> . However, if <paramref name="maxValue" /> equals 0, <paramref name="maxValue" /> is returned.
Returns a non-negative random integer that is less than the specified maximum.
public
long
NextInt64(long minValue,
long maxValue)
minValue
The inclusive lower bound of the random number returned.
maxValue
The exclusive upper bound of the random number returned. <paramref name="maxValue" /> must be greater than or equal to <paramref name="minValue" /> .
Returns A 64-bit signed integer greater than or equal to <paramref name="minValue" /> and less than <paramref name="maxValue" /> ; that is, the range of return values includes <paramref name="minValue" /> but not <paramref name="maxValue" /> . If minValue equals <paramref name="maxValue" /> , <paramref name="minValue" /> is returned.
Returns a random integer that is within a specified range.
public
Single
NextSingle() Returns A single-precision floating point number that is greater than or equal to 0.0, and less than 1.0.
Returns a random floating-point number that is greater than or equal to 0.0, and less than 1.0.
protected
double
Sample() Returns A double-precision floating point number that is greater than or equal to 0.0, and less than 1.0.
Returns a random floating-point number between 0.0 and 1.0.
public
void
Shuffle(T[] values)
public
bool
Equals(object obj)
Inherited from object
obj
The object to compare with the current object.
Returns <see langword="true" /> if the specified object is equal to the current object; otherwise, <see langword="false" /> .
Determines whether the specified object is equal to the current object.
protected
void
Finalize()
Inherited from object
Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.
public
int
GetHashCode()
Inherited from object
Returns A hash code for the current object.
Serves as the default hash function.
public
Type
GetType()
Inherited from object
Returns The exact runtime type of the current instance.
Gets the <see cref="T:System.Type" /> of the current instance.
protected
object
MemberwiseClone()
Inherited from object
Returns A shallow copy of the current <see cref="T:System.Object" /> .
Creates a shallow copy of the current <see cref="T:System.Object" /> .
public
string
ToString()
Inherited from object
Returns A string that represents the current object.
Returns a string that represents the current object.