What is the use of `default` keyword in C#?
What is the use of default keyword in C#? Is it introduced in C# 3.0 ?
从通用列表中获取属性名称
原标题：get property name from generic list
Environment: asp.net fx3.5
given
public class Product
{
public int ProductId { get; set; }
public string ProductName { get; set; }
public decimal UnitPrice { get; set; }
}
i have a List collection.
is there a way to get the property names because i want them to be a header row in my csv file that i m constructing?
so the result i m looking for is a string = "ProductId,ProductName,UnitPrice"
最佳回答
You can use the TypeDescriptor class (which is more efficient than plain reflection):
string.Join(",", TypeDescriptor.GetProperties(instance).Select(p => p.Name))
问题回答
var headers = this.GetType().GetProperties().Select(p => p.Name).Aggregate((p1, p2) => p1 + "," + p2);
String.Join(",", typeof(Product).GetProperties().Select(p => p.Name))
If you don t want to use Linq, you can just iterate through the PropertyInfo array returned by GetProperties and concatenate the names to a string.
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