C#中Append()用法

Append()用法

Class Preson

{

private string firstName;

private string middletName;

private string lastName;        //定義3個私人變數 firstName middleName lastName

Public Preson(string fn,string mn,string ln)  //建構函式

{

firstName=fn;

middleName=mn;

lastName=ln;

}

public void displayFull Name()         //定義一個方法名

{

StringBuilder FullName =new StringBuilder();                  //執行個體化FullName

FullName.Append(firstName);      //FullName =FullName+firstName Full為空白 所有只顯示FirstName

FullName.Append(" ");              //FullName =FullName +"空格" FullName 已經包含firstName的值

if(middleName[0]!="")        //如果中間名的第一數組裡字元非空則向下運行 否則跳出此IF語句

 {

FullName.Append(".");        //滿足條件則繼續FullName = FullName +"."

FullName.Append(lastname);     //FullName= FullName + lastName的值

Console.WriteLine(FullName);    //輸出FullName

}

}

public static void Main()

{

Person me =new Person("Bradley","Lee","Jones");     //執行個體化

me.displayFullName();                                                 //調用該函數

}

輸出結果:Bradley L.Jones

解釋:FullName->Bradley  先賦值

        FullName->Bradley_ 加一個空格("_"代表空格 不是底線)

        FullName->Bradley_L

        FullName->Bradley_L.

        FullName->Bradley_L.Jones

最後FullName= Bradley L.Jones