我的StreamReader仅从我的4行文本文件中读取第二行和第四行

Question

我有一个程序，该程序从文件中读取数据，并使用该数据为图形创建节点。问题是，从4行文件中，我的程序仅创建两个节点（一行应创建一个节点）。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（它是贝叶斯网络）：

节点名称/父母数量/文件中父母的索引/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Node构造函数，程序将打印新节点具有的数据。我希望它能打印出来：

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

您两次阅读了该行。

using (StreamReader reader = new StreamReader(file))
        {
            while ((line = reader.ReadLine()) != null) // HERE
            {
                line = reader.ReadLine(); // AND HERE
                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);
            }
        }

Answer 2

您两次致电reader.ReadLine()：

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

只需删除第二个line = reader.ReadLine()，所以您的代码是：

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