问题描述
我的问题是，如果找不到防御性球员，我找不到默认的等级为0的方法.
我尝试创建防御性球员的列表，如果该列表返回null，它将设置为零，但不起作用.
My problem is that I can't find a way to default a rating to 0 if there are no defensive players found.
I've tried creating a list of the defensive players and if that list returns null, it will set it to zero but it doesn't work.
此代码在我的Teams班级中:(我也有相同类型的总体和进攻计算器，但前者使用所有玩家，后者使用进攻性玩家)
[code]
public int DefenceRatingCalc
{
GET
{VAR
从防御p =在玩家
其中p.position == PlayerPosition.DE ||
p.position == PlayerPosition.DT ||
p.position == PlayerPosition.OLB ||
p.position == PlayerPosition.MLB ||
p.position == PlayerPosition.CB ||
p.position == PlayerPosition.FS ||
p.position == PlayerPosition.SS
的OrderBy p.position
选择磷;
变种DR = defense.Average(( p)=> p.OVR);
ating = Convert.ToInt32(dR);
返回returnRingRating;
}
}
[/code]
This code is in my Teams class: (I also have Overall and Offense calculators of the same type but the former uses all players and the latter uses Offensive players)
[code]
public int DefenseRatingCalc
{
get
{
var defense = from p in Players
where p.position == PlayerPosition.DE ||
p.position == PlayerPosition.DT ||
p.position == PlayerPosition.OLB ||
p.position == PlayerPosition.MLB ||
p.position == PlayerPosition.CB ||
p.position == PlayerPosition.FS ||
p.position == PlayerPosition.SS
orderby p.position
select p;
var dR = defense.Average((p) => p.OVR);
DefenseRating = Convert.ToInt32(dR);
return DefenseRating;
}
}
[/code]
玩家属性位置"是PlayerPosition类型-一个包含以下内容的枚举:
[code]
public枚举PlayerPosition {QB，RB，WR，TE，LT，LG，C，RG，RT，DE，DT， OLB，MLB，CB，FS，SS}
[/code]
OVR也是Player类的属性.
The player property "position" is a PlayerPosition type--an enum that contains the following:
[code]
public enum PlayerPosition { QB, RB, WR, TE, LT, LG, C, RG, RT, DE, DT, OLB, MLB, CB, FS, SS }
[/code]
OVR is also a property of the Player class.
这是捕获所有防御性玩家的查询.
[code]
public List< Player> DefensivePlayers
{
GET
{VAR
名单=从p在玩家
其中p.position == PlayerPosition.DE ||
p.position = = PlayerPosition.DT ||
p.position == PlayerPosition.OLB ||
/> p.position == PlayerPosition.FS ||
p.position == PlayerPosition.SS
的OrderBy p.position
选择磷;
返回list.ToList();
}
}
[/code]
This is the query that grabs all of the defensive players.
[code]
public List<Player> DefensivePlayers
{
get
{
var list = from p in Players
where p.position == PlayerPosition.DE ||
p.position == PlayerPosition.DT ||
p.position == PlayerPosition.OLB ||
p.position == PlayerPosition.MLB ||
p.position == PlayerPosition.CB ||
p.position == PlayerPosition.FS ||
p.position == PlayerPosition.SS
orderby p.position
select p;
return list.ToList();
}
}
[/code]
这是我的调用方法:
[code]
foreach(联盟中的团队t.Teams)//in Main()
WriteLine(t.Name +" + t.昵称);
Console.WriteLine(<总体评级:+ t.OverallRatingCalc); < + t.OffenseRatingCalc);
Console.WriteLine(防御等级:" + t.DefenseRatingCalc); //计算评分并设置团队属性"DefenseRating"
[code]
foreach (Team t in league.Teams) //in Main()
{
Console.WriteLine("");
Console.WriteLine(t.Name + " " + t.Nickname);
Console.WriteLine("Overall Rating: " + t.OverallRatingCalc);
Console.WriteLine("Offense Rating: " + t.OffenseRatingCalc);
Console.WriteLine("Defense Rating: " + t.DefenseRatingCalc); //calculate rating and set team property "DefenseRating"
}
[/code]
通过DefensivePlayers查询，我尝试了以下方法:
With the DefensivePlayers query, I tried this:
[code]
foreach(联盟中的团队t.Teams)
<");
" Console.WriteLine(t.Name +" + t.Nickname);" Console.WriteLine(tefenseD) //计算评分并设置团队属性``DefenseRating''
}被找到.");
}
}
[/code]
[code]
foreach (Team t in league.Teams)
{
if (t.DefensivePlayers != null)
{
Console.WriteLine("");
Console.WriteLine(t.Name + " " + t.Nickname);
Console.WriteLine("Defense Rating: " + t.DefenseRatingCalc); //calculate rating and set team property "DefenseRating"
}
else
{
t.DefenseRating = 0;
Console.WriteLine("No defensive players were found.");
}
}
[/code]
但这是行不通的.我还在实际查询(DefenseRatingCalc)中尝试了这种方法，但这也不起作用.
but this doesn't work. I've also tried such a thing in the actual query (DefenseRatingCalc) but that doesn't work either.
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