The Next() Method of System.Random class in C# is used to get a random integer number. This method can be overloaded by passing different parameters to it as follows:
- Next(Int32, Int32)
This method is used to returns a non-negative random integer.
public virtual int Next ();
Return Value: This method returns the 32-bit signed integer which is greater than or equal to 0 and less than MaxValue.
Printing 10 random numbers 1 -> 1386420123 2 -> 2133003862 3 -> 981665925 4 -> 495382685 5 -> 1127976381 6 -> 824414652 7 -> 213006792 8 -> 1948108820 9 -> 214839986 10 -> 261560448
This method is used to get a non-negative random integer which is less than the specified maximum.
public virtual int Next (int maxValue);
Here, maxValue is the upper boundary of the random number to be generated. It must be greater than or equal to 0.
Return Value: The function returns a 32-bit signed integer which is greater than or equal to 0, and less than maxValue. However, if maxValue equals 0, maxValue is returned.
Exception: This method will give ArgumentOutOfRangeException if the maxValue is less than 0.
Printing 10 random numbers less than 100 1 -> 19 2 -> 94 3 -> 14 4 -> 54 5 -> 94 6 -> 73 7 -> 39 8 -> 42 9 -> 18 10 -> 77
Next(Int32, Int32) Method
This method is used to get the random integer that is within a specified range.
public virtual int Next (int minValue, int maxValue);
- maxValue: It is the exclusive upper boundary of the random number generated. It must be greater than or equal to minValue.
- minValue: It is the inclusive lower bound of the random number returned.
Return Value: The function returns a 32-bit signed integer greater than or equal to minValue and less than maxValue; that is, the range of return values includes minValue but not maxValue. If minValue equals maxValue, minValue is returned.
Exception: This method will give the ArgumentOutOfRangeException if the minValue is greater than maxValue.
Printing 10 random numbers between 50 and 100 1 -> 91 2 -> 85 3 -> 93 4 -> 74 5 -> 88 6 -> 77 7 -> 92 8 -> 76 9 -> 77 10 -> 52
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