在.csv 文件中找到最高数并显示

Question

What can I do that this Programm will output the highest number of my csv file? Currently it displays the value in the in the Brackets of the .Content line

private void BtnAuswerten_Click(object sender, RoutedEventArgs e)
{
    using (var reader = new StreamReader("H:/Projekte/MaxTemp2/MaxTemp/MaxTemp/temps.csv"))
    {
        List<string> listA = new List<string>();
        List<string> listB = new List<string>();
        List<string> listC = new List<string>();

        while (!reader.EndOfStream)
        {
            var line = reader.ReadLine();
            var values = line.Split(',');

            listA.Add(values[0]);
            listB.Add(values[1]);
            listC.Add(values[2]);
        }

        lblAusgabe.Content = (string.Join(",", listA[5], listB[5], listC[5]));
    }
}

Answer 1

You can use a DataTable instead of three independent lists:

[...]

    DataTable dtValues = new DataTable();
    dtValues.Columns.Add("Column1", typeof(int));
    dtValues.Columns.Add("Column2", typeof(string));
    dtValues.Columns.Add("Column3", typeof(string));
    
    while (!reader.EndOfStream)
    {
        var line = reader.ReadLine();
        var values = line.Split(',');

        dtValues.Rows.Add(values[0],values[1],values[1]);
    }
    
    dtValues.DefaultView.Sort = "Column1 DESC";
    dtValues = dtValues.DefaultView.ToTable();

[...]

That snippet assumes that the first column contains the value you want to sort. But I'm sure you can adapt it for your needs.

When you try to print your highest value on lblAusgabe , do it like that:

lblAusgabe.Content = (string.Join(",", dtValues.Rows[0].Field<int>("Column1"), dtValues.Rows[0].Field<string>("Column2"), dtValues.Rows[0].Field<string>("Column3")));