[英]Access object parameters from a List in C#
I'm creating a list of agent objects that hold a number of different parameters but I'm unsure of how to access particular parameter(s) of all of my objects using a loop...what I'm looking to do is get all of the Point3d positions from all of my agents. 我正在创建一个包含多个不同参数的代理对象列表,但不确定如何使用循环访问我所有对象的特定参数...我想要做的是获取我所有代理商的所有Point3d职位。 How would I do this?
我该怎么做?
// Define Agent class
class Agent
{
Point3d Pos = new Point3d();
Vector3d Vec = new Vector3d();
int Alignment;
double Separation;
double Cohesion;
double NeighborRadius;
public Agent(Point3d pos, Vector3d vec, int alignment, double separation, double cohesion, double neighborRadius)
{
Pos = pos;
Vec = vec;
Alignment = alignment;
Separation = separation;
Cohesion = cohesion;
NeighborRadius = neighborRadius;
}
}
protected override void SolveInstance(IGH_DataAccess DA)
{
// Initialize Agents
for (int i = 0; i < agents; i++)
{
double xPos = RandomfromDouble(0.0, boundx);
double yPos = RandomfromDouble(0.0, boundy);
double zPos = RandomfromDouble(0.0, boundz);
Point3d pos = new Point3d(xPos, yPos, zPos); // Create Agent Start Position
Vector3d vec = new Vector3d(xPos + 1, yPos, zPos); // Create Agent Start Vector
Agent agent = new Agent(pos, vec, alignment, separation, cohesion, neighborRadius);
allAgents.Add(agent);
agentPositions.Add(pos);
}
}
if you can change access modifier for Pos: 如果您可以更改Pos的访问修饰符:
class Agent
{
public Point3d Pos = new Point3d();
//.
//.
//.
}
or 要么
class Agent
{
public Agent()
{
Pos = new Point3d();
}
public Point3d Pos { get;private set; }
//.
//.
//.
}
List<Agent> allAgents = new List<Agent>();
List<Point3d> agentPositions = new List<Point3d>();
// Initialize Agents
//.
//.
//.
agentPositions = allAgents
.Select(agent => agent.Pos)
.ToList();
note: Linq is available from .Net Framework 3.5 注意:Linq可从.Net Framework 3.5获得
class Agent
{
public Point3d Pos {get; private set;}
public Agent()
{
Pos = new Point3d();
}
....
}
foreach (Agent ag in allAgents)
{
Console.WriteLine(ag.Pos); //might need to dereference a specific member like x,y, or z
}
You are unable to access Point3d Pos because by default it is private. 您无法访问Point3d Pos,因为默认情况下它是私有的。 So use public access modifier like below and hope it will fix the issue:
因此,请使用如下所示的公共访问修饰符,希望它可以解决此问题:
public Point3d Pos = new Point3d();
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