如何在C#中定义自定义方法？
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Access Specifier − This determines the visibility of a variable or a method from another class.
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Return type − A method may return a value. The return type is the data type of the value the method returns. If the method is not returning any values, then the return type is void.
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Method name − Method name is a unique identifier and it is case sensitive. It cannot be same as any other identifier declared in the class.
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Parameter list − Enclosed between parentheses, the parameters are used to pass and receive data from a method. The parameter list refers to the type, order, and number of the parameters of a method. Parameters are optional; that is, a method may contain no parameters.
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Method body − This contains the set of instructions needed to complete the required activity.
