SameText、CompareStr、CompareText - 字符串比较

 

CompareStr 区分大小写; CompareText 不区分大小写. 举例:

---

var
  s1,s2: string;
  i: Integer;
begin
  s1 := 'abc';
  s2 := 'adc';
  i := CompareStr(s1,s2);
  ShowMessage(IntToStr(i));  {-2}

  i := CompareText(s1,s2);
  ShowMessage(IntToStr(i));  {-2}

  s1 := 'abc';
  s2 := 'ABC';
  i := CompareStr(s1,s2);    {CompareStr 区分大小写}
  ShowMessage(IntToStr(i));  {32}

  i := CompareText(s1,s2);   {CompareText 不区分大小写}
  ShowMessage(IntToStr(i));  {0}
end;

---

============================================================

 

comparestr（）区分大小写

comparetext（）不区分大小写

两者都是比较字符串大小

functionCompareSTR(const:s1,s2:String):integer

functionCompareText(const:s1,s2:String):integer

大于返回大于0，小于返回小于0，等于返回等于0

 

 

var
  s1,s2: string;
  b1,b2: Boolean;
begin
  s1 := 'C:\Temp';
  s2 := 'c:\temp';

  b1 := SameText(s1, s2); //True
  b2 := s1 = s2;          //False

  ShowMessage(BoolToStr(b1,True) + ' - ' + BoolToStr(b2,True));
end;

---

 

 

2014.01.11--区别：

------------------------------

SameText 返回 Boolean;

SameStr 返回 Boolean;可能区分大小写
CompareStr，CompareText 返回 Integer;

CompareStr 区分大小写
CompareText 不区分大小写