c#返回属性的串联
我有一门课:c#返回属性的串联,c#,C#,我有一门课: public class LabOccurrenceForm { public DateTime Occurrence_Date { get; set; } public string Cup_Type { get; set; } public string Analytical_Testing_Phase { get; set; } public string Area { get; set; } public stri
public class LabOccurrenceForm
{
public DateTime Occurrence_Date { get; set; }
public string Cup_Type { get; set; }
public string Analytical_Testing_Phase { get; set; }
public string Area { get; set; }
public string Preanalytical_Before_Testing { get; set; }
public string Postanalytical_After_Testing { get; set; }
public string Other { get; set; }
public string Practice_Code { get; set; }
public string Comments { get; set; }
}
我想在类中添加一个方法,该方法将连接所有变量,如下所示:
public string AllData
{
return Occurrence_Date.ToString() + " " +
Cup_Type + " " +
Analytical_Testing_Phase + " " +
Area + " " +
Preanalytical_Before_Testing + " " +
Postanalytical_After_Testing + " " +
Other + " " +
Practice_Code + " " +
Comments;
}
public string AllData
{
get
{
return Occurrence_Date.ToString() + " " +
Cup_Type + " " +
Analytical_Testing_Phase + " " +
Area + " " +
Preanalytical_Before_Testing + " " +
Postanalytical_After_Testing + " " +
Other + " " +
Practice_Code + " " +
Comments;
}
}
这不起作用,因为它需要一个get或set。我做错了什么?我怎样才能解决这个问题呢?所以,把它变成一个属性,并给它一个 或者让它成为一种方法
public string AllData()
{
return Occurrence_Date.ToString() + " " +
Cup_Type + " " +
Analytical_Testing_Phase + " " +
Area + " " +
Preanalytical_Before_Testing + " " +
Postanalytical_After_Testing + " " +
Other + " " +
Practice_Code + " " +
Comments;
}
或者改为覆盖ToString()
(在这种情况下,哪种类型有意义)
您需要在类内的get中使用return。它不能单独存在。如果您试图创建一个方法,您必须将其声明为一个方法:
public string AllData()
按照您声明它的方式,编译器认为您正在尝试创建一个属性,因此它希望您提供一个get{}
语句
在任何一种情况下,这都只是一个小改动——要创建一个方法,只需在方法名称的末尾添加括号即可。如果您想要一个属性,只需在实际代码的开头添加get{
,在末尾添加}
,就可以了
用法差别不大:方法:string allData=lab.allData()
或属性string allData=lab.allData
您也可以在类中考虑重写.toStRun()。
您应该添加这样的只读字段:public string AllData
{
return Occurrence_Date.ToString() + " " +
Cup_Type + " " +
Analytical_Testing_Phase + " " +
Area + " " +
Preanalytical_Before_Testing + " " +
Postanalytical_After_Testing + " " +
Other + " " +
Practice_Code + " " +
Comments;
}
public string AllData
{
get
{
return Occurrence_Date.ToString() + " " +
Cup_Type + " " +
Analytical_Testing_Phase + " " +
Area + " " +
Preanalytical_Before_Testing + " " +
Postanalytical_After_Testing + " " +
Other + " " +
Practice_Code + " " +
Comments;
}
}
要获得更好的性能,请尝试:
public string AllData
{
get
{
return string.Format("{0} {1} {2} {3} {4} {5} {6} {7} {8}",
Occurrence_Date.ToString(),
Cup_Type,
Analytical_Testing_Phase,
Area,
Preanalytical_Before_Testing,
Postanalytical_After_Testing,
Other,
Practice_Code,
Comments);
}
}
或
因为您希望所有属性-使用反射更简洁:
public string GetAllData()
{
return string.Join(" ", typeof(LabOccurrenceForm).GetProperties().Select(x => x.GetValue(this, null)));
}
错误3获取或设置访问器预期无法生成您需要使用答案编辑器中的“格式代码示例”按钮,以便正确显示您的代码。+1回答正确。只是澄清一下,
AllData
不是一种方法,而是一种属性@Milimetic-在这一点上,它可以制成任何一种。用户现在什么都没有,因为它甚至不是有效的代码。
public string AllData
{
get
{
StringBuilder sb = new StringBuilder();
sb.AppendFormat({0} ", Occurrence_Date.ToString());
sb.AppendFormat({0} ", Cup_Type);
sb.AppendFormat({0} ", Analytical_Testing_Phase);
sb.AppendFormat({0} ", Area);
sb.AppendFormat({0} ", Preanalytical_Before_Testing);
sb.AppendFormat({0} ", Postanalytical_After_Testing);
sb.AppendFormat({0} ", Other);
sb.AppendFormat({0} ", Practice_Code);
sb.AppendFormat({0}", Comments);
return sb.ToString();
}
}
public string GetAllData()
{
return string.Join(" ", typeof(LabOccurrenceForm).GetProperties().Select(x => x.GetValue(this, null)));
}