c# - 我的 StreamReader 只从我的 4 行文本文件中读取第二行和第四行

Question

我有一个程序可以从文件中读取数据并使用该数据为图形创建节点。问题是，从一个 4 行的文件中，我的程序只创建了两个节点(一行应该创建一个节点)。文本文件如下所示:

A/0/0.7
C/1/0/0.1 0.4
B/1/0/0.6 0.8
D/2/2 1/0.6 0.7 0.1 0.2

节点数据的结构(它是一个贝叶斯网络):

节点名称/ parent 的数量/ parent 在文件中的索引/概率

using (StreamReader reader = new StreamReader(file))
            {
                while ((line = reader.ReadLine()) != null)
                {
                    line = reader.ReadLine();
                    string name = "";
                    List<int> parents = new List<int>();
                    List<float> probs = new List<float>();
                    string[] splitLine = line.Split('/');
                    Console.WriteLine("splitLine array: ");
                    foreach (string item in splitLine)
                    {
                        Console.WriteLine(item);
                    }
                    Console.WriteLine();
                    int index = 2;

                    name = splitLine[0];

                    if (splitLine.Length == 4)
                    {
                        string[] temp = splitLine[2].Split(' ');
                        foreach (string item in temp)
                            parents.Add(Int32.Parse(item));
                        index = 3;
                    }

                    string[] temp1 = splitLine[index].Split(' ');
                    foreach (string item in temp1)
                        probs.Add(float.Parse(item, CultureInfo.InvariantCulture.NumberFormat));

                    Node newNode = new Node(name, parents, probs);
                    graph.Add(newNode);
                }
            }

如果调用节点构造函数，程序将打印新节点具有的数据。我希望它打印:

Created Node:
   Name: A
   Parents' indexes: 0
   Probabilities: 0.7
Created Node:
   Name: C
   Parents' indexes: 0
   Probabilities: 0.1 0.4
Created Node:
   Name: B
   Parents' indexes: 0
   Probabilities: 0.6 0.8
Created Node:
   Name: D
   Parents' indexes: 2 1
   Probabilities: 0.6 0.7 0.1 0.2

但是我得到:

Created Node:
   Name: C
   Parents' indexes: 0
   Probabilities: 0.1 0.4
Created Node:
   Name: D
   Parents' indexes: 2 1
   Probabilities: 0.6 0.7 0.1 0.2

Answer 1

你调用 reader.ReadLine() 两次:

while ((line = reader.ReadLine()) != null) // <-- First here
{
    line = reader.ReadLine(); // <-- Again here

只需删除第二行 line = reader.ReadLine()，因此您的代码是:

...
while ((line = reader.ReadLine()) != null)
{
    string name = "";
    List<int> parents = new List<int>();
...