C# 如何根据所述字符串中的数字重新组织字符串列表?
我正在尝试为我正在制作的地理测验应用程序创建记分板。我试图把分数从大到小进行组织,我甚至不知道从哪里开始。以下是提交按钮功能的代码:C# 如何根据所述字符串中的数字重新组织字符串列表?,c#,arrays,visual-studio,sorting,C#,Arrays,Visual Studio,Sorting,我正在尝试为我正在制作的地理测验应用程序创建记分板。我试图把分数从大到小进行组织,我甚至不知道从哪里开始。以下是提交按钮功能的代码: private void button1_Click(object sender, EventArgs e)//Submit Button { if(isDone) { string[] lines = System.IO.File.ReadAllLines(path+"/score.txt"
private void button1_Click(object sender, EventArgs e)//Submit Button
{
if(isDone)
{
string[] lines = System.IO.File.ReadAllLines(path+"/score.txt");
StreamWriter sw = new StreamWriter(path+"/score.txt");
foreach (string line in lines)
{
if (line != null && line.Length > 0) {sw.WriteLine("\n"+ line); }
}
sw.WriteLine("Score:" + score +" ~"+ textBox1.Text + " -- " + label9.Text + " -- " + numCorrect + "/41" );
sw.Close();
}
}
我想按照score变量和从文本文件中的行抓取的数字对其进行排序我做了一些假设,因为您没有更新您的问题,但假设文件行包含以下格式的行:score:[score]~[Name]-Timer:[mm:ss]-[numCorrect]/41,这个分数是一个双精度,numCorrect是一个整数,你不知道它们来自哪里,那么这里有一种方法来处理这种情况 首先,使用要存储的属性创建一个类,该类能够从字符串文件行创建自身实例,并将自身输出为字符串以写入文件:
private class Result
{
public string Name { get; set; }
public double Score { get; set; }
public TimeSpan Time { get; set; }
public int CorrectCount { get; set; }
/// <summary>
/// Returns an instance of the Result class based on a string.
/// The string must be in the format:
/// "Score: [score] ~[Name] -- Timer: [mm:ss] -- [numCorrect]/41"
/// Where [score] is a valid double and [numCorrect] a valid int
/// </summary>
/// <param name="input">The string to parse</param>
/// <returns>A Result with properties set from the input string</returns>
public static Result Parse(string input)
{
if (input == null) throw new ArgumentNullException(nameof(input));
var splitStrings = new[] {"Score:", " ~", " -- ", "/41"};
var parts = input
.Split(splitStrings, StringSplitOptions.RemoveEmptyEntries)
.Select(item => item.Trim())
.ToList();
// These will hold the converted parts of the string
double score;
int correctCount;
TimeSpan time;
// Verify that the string contains 4 parts, and that the Score, Time, and
// CorrectCount parts can be converted to the proper data type for the property
if (parts.Count != 4 ||
!double.TryParse(parts[0], out score) ||
!TimeSpan.TryParseExact(parts[2], @"mm\:ss",
CultureInfo.InvariantCulture, out time) ||
!int.TryParse(parts[3], out correctCount))
{
throw new FormatException("input is not in a recognized format");
}
return new Result
{
Name = parts[1],
Score = score,
Time = time,
CorrectCount = correctCount
};
}
public override string ToString()
{
return $"Score:{Score} ~{Name} -- {Time.ToString(@"mm\:ss")} -- {CorrectCount}/41";
}
}
现在我们可以从文件内容和表单中填充这些类的列表。然后,我们可以在本例中要评分的任何字段上使用Linq对列表进行排序,并可以将排序后的列表写回文件:
private void button1_Click(object sender, EventArgs e)//Submit Button
{
if (isDone)
{
// Create a list of results from our file
List<Result> existingResults = File.ReadAllLines(Path).Select(Result.Parse).ToList();
// Add a new result to the list from the form data
existingResults.Add(GetResultFromFormData());
// Sort the list on the Score property
existingResults = existingResults.OrderBy(result => result.Score).ToList();
// Write the sorted list back to the file
File.WriteAllLines(Path, existingResults.Select(result => result.ToString()));
}
}
现在,该文件包含其原始内容,以及表单中的新结果,所有结果都按分数排序。分数变量从何处获取?以及它与每一行的关系如何?在您的示例中找不到它。请对数组进行排序。您需要添加自定义转换器或将数组转换为整数以获得数字排序。此外,如果该行不包含分数,则您需要从该行对分数进行子串或解析。每个数组位置包含整行信息,而不仅仅是分数行[1]包含分数:2~完成后键入名称-计时器:00:02-4/41我的示例行请使用文件中的示例行更新您的问题。似乎您可以通过创建一个类来保存数据而受益,该类可以从字符串文件行创建自身的实例,并将自身输出为字符串以写入文件。是行的格式:Score:[Score]~[Name]-Timer:[mm:ss]-[numCorrect]/41Yup!这很有效。抱歉没有更新。我最近工作很忙,没有时间。
private void button1_Click(object sender, EventArgs e)//Submit Button
{
if (isDone)
{
// Create a list of results from our file
List<Result> existingResults = File.ReadAllLines(Path).Select(Result.Parse).ToList();
// Add a new result to the list from the form data
existingResults.Add(GetResultFromFormData());
// Sort the list on the Score property
existingResults = existingResults.OrderBy(result => result.Score).ToList();
// Write the sorted list back to the file
File.WriteAllLines(Path, existingResults.Select(result => result.ToString()));
}
}