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What is the Difference between String and string

=>The string type is a sealed class type that inherits directly from object. Instances of the string class represent Unicode character strings.
=> Values of the string type can be written as string literals.
=> The keyword string is simply an alias for the predefined class System.String so you can use string name = “Fred”; or String name = “Fred”;.
=> Likewise you can use string.Concat() or String.Concat()
=> Use string for variable names
=> Use String for class methods and reference
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