在德尔福中将月份名称转换为数字



是否有一些内置的Delphi(XE2)/Windows方法可以将月份名称转换为数字1-12;而不是自己循环(TFormatSettings.)LongMonthNames[]

您可以使用 StrUtils 中的IndexStr,如果未找到字符串,则返回-1

例如
Caption := IntToStr(
  IndexStr(FormatSettings.LongMonthNames[7], FormatSettings.LongMonthNames) + 1);

编辑:
为避免转换和区分大小写的问题,您可以使用如下所示的IndexText

Function GetMonthNumber(Const Month:String):Integer; overload;
begin
   Result := IndexText(Month,FormatSettings.LongMonthNames)+1
end;

我找不到方法,但我写了一个。

function GetMonthNumberofName(AMonth: String): Integer;
var
  intLoop: Integer;
begin
  Result:= -1;
  if (not AMonth.IsEmpty) then
  begin
    for intLoop := Low(System.SysUtils.FormatSettings.LongMonthNames) to High(System.SysUtils.FormatSettings.LongMonthNames) do
    begin
      //if System.SysUtils.FormatSettings.LongMonthNames[intLoop]=AMonth then  --> see comment about Case insensitive
      if SameText(System.SysUtils.FormatSettings.LongMonthNames[intLoop], AMonth) then
      begin
        Result:= Intloop;
        Exit
      end;
    end;
  end;
end;

好的,我为其他格式设置更改了此功能。

function GetMonthNumberofName(AMonth: String): Integer; overload;
function GetMonthNumberofName(AMonth: String; AFormatSettings: TFormatSettings): Integer; overload;
function GetMonthNumberofName(AMonth: String): Integer;
begin
  Result:= GetMonthNumberofName(AMonth, System.SysUtils.FormatSettings);
end;
function GetMonthNumberofName(AMonth: String; AFormatSettings: TFormatSettings): Integer;
var
  intLoop: Integer;
begin
  Result:= -1;
  if (not AMonth.IsEmpty) then
  begin
    for intLoop := Low(AFormatSettings.LongMonthNames) to High(AFormatSettings.LongMonthNames) do
    begin
      if SameText(AFormatSettings.LongMonthNames[intLoop], AMonth) then
      begin
        Result:= Intloop;
        Exit
      end;
    end;
  end;
end;

使用系统格式设置调用函数

GetMonthNumberofName('may');

或使用格式设置

procedure TForm1.Button4Click(Sender: TObject);
var
  iMonth: Integer;
  oSettings:TFormatSettings;
begin
  // Ned
  // oSettings:= TFormatSettings.Create(2067);
  // Fr
  // oSettings:= TFormatSettings.Create(1036);
  // Eng
  oSettings:= TFormatSettings.Create(2057);
  iMonth:= GetMonthNumberofName(self.Edit1.Text, oSettings);
  showmessage(IntToStr(iMonth));
end;

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