我想要做老师给我的疯狂的格式化指令。仔细阅读大概一个小时后(这是我的第一个C#程序),我想出了这行代码。C#输出以某种方式程序名称和类名
`Console.WriteLine(String.Format("{0," + -longestTitle + "} | {1," + -longestAlbumTitle + "} | {2," + -longestArtist + "} | {3:0.00, 8} | {4," + -longestYearAndRating + "} |", songArray[arraySearcher].title, songArray[arraySearcher].albumTitle, songArray[arraySearcher].artist, songArray[arraySearcher].length, songArray[arraySearcher].yearAndRating));`
longestX是包含longestX
的字符数(where x = title
,专辑等)一个int。
我想输出看起来是这样的:
Stuff | morestuff | extrastuff | 5.92 | 1992:R |
Stuf | est | sfafe | 232.44 | 2001:PG |
S uf | e | sfe | .44 | 2001:G |
(其中所有的填充,动态地确定基于用户或文件最长的标题输入)。
我得到的输出是这样的:
Program_Example.ClassName
Program_Example.ClassName
(或具体为Tyler_Music_Go.Song)
我已经印刷songArray[arraySearcher]
.title伪在这同样的方法,并能正常工作。
有人能帮我吗?
全部相关代码:
class Song {
public string title, albumTitle, yearAndRating, artist;
public float length;
public Song(string titl, string albumTitl, string art, float leng, string yrNRating)
{
title = titl;
albumTitle = albumTitl;
yearAndRating = yrNRating;
length = leng;
artist = art;
}
}
//This class contains a Song array (with all Songs contained within), an array index, a search index, and ints to determine the longest of each category.
class SongList
{
Song[] songArray;
private int arrayKeeper, longestTitle, longestArtist, longestAlbumTitle, longestYearAndRating, checker;
int arraySearcher = 0;
public SongList()
{
songArray = new Song[10000];
arrayKeeper = 0;
longestTitle = 0;
longestArtist = 0;
longestAlbumTitle = 0;
longestYearAndRating = 0;
}
public void AddSong(string title, string albumTitle, string artist, float length, string yearAndRating)
{
songArray[arrayKeeper] = new Song(title, albumTitle, artist, length, yearAndRating);
arrayKeeper++;
checker = 0;
//This section of code is responsible for formatting the output. Since the longest values are already known, the list can be displayed quickly.
//Once a song is deleted, however, previously calculated longest lengths still stand.
foreach (char check in title)
{
checker++;
}
if (checker > longestTitle)
{
longestTitle = checker;
}
foreach (char check in albumTitle)
{
checker++;
}
if (checker > longestAlbumTitle)
{
longestAlbumTitle = checker;
}
foreach (char check in artist)
{
checker++;
}
if (checker > longestArtist)
{
longestArtist = checker;
}
foreach (char check in yearAndRating)
{
checker++;
}
if (checker > longestYearAndRating)
{
longestYearAndRating = checker;
}
}
//public bool RemoveSong(string title)
// {
//}
public void DisplayData()
{
Console.WriteLine("| Title | Album Title | Artist | Length | Year and Rating |");
for (arraySearcher = 0; arraySearcher < arrayKeeper; arraySearcher++)
{
//This line for testing purposes. (works)
Console.WriteLine(songArray[arraySearcher].title);
Console.WriteLine(songArray[arraySearcher].ToString());
}
}
public override string ToString()
{
//This line for testing purposes. (works)
Console.WriteLine(songArray[arraySearcher].title);
return String.Format("{0," + -longestTitle + "} | {1," + -longestAlbumTitle + "} | {2," + -longestArtist + "} | {3:0.00, 8} | {4," + -longestYearAndRating + "} |", songArray[arraySearcher].title, songArray[arraySearcher].albumTitle, songArray[arraySearcher].artist, songArray[arraySearcher].length, songArray[arraySearcher].yearAndRating);
}
}
`
编辑:
好了,现在我觉得自己愚蠢的所有庄园。我正在覆盖SongList的tostring()方法,然后调用Song的tostring方法。回答的那个人让我意识到了这一点。不过,感谢所有给我建议的人。
如果你想让你的Song类输出别的东西然后输出它自己的类名,那么你将不得不重写ToString()方法。 – 2013-02-10 17:48:27
我重写了tostring方法。也许我应该只发布整个事情。 – 2013-02-10 17:49:30
请把你的输出功能分成多行。为每列引入一些临时变量,比如'formattedTitle',然后结合它们。 – CodesInChaos 2013-02-10 17:50:57