C#調用Delphi Dll返回字串的樣本

  //----------------------Delphi------------------- procedure GetSqlData(ASource: PChar; ADest: PChar; ADestSize: Integer); stdcall; var  S: string; begin   if ASource = nil then Exit;  S := Format( '%s 路過。 ',[ASource]);  Move(S[ 1], ADest^, Min(ADestSize, Length(S)+ 1)); end;{ GetSqlData }   exports  GetSqlData;   //----------------------C#------------------- [DllImport(@"TempLib.dll")] public static extern void GetSqlData( string ASource , StringBuilder ADest, int ADestSize);   private void button1_Click( object sender , EventArgs e) {     StringBuilder vDest = new StringBuilder( 1024);     GetSqlData("Zswang", vDest, 1024);     Text = vDest.ToString(); }