我刚刚创建了一个C#控制台应用程序,可以读取.csv文件并以一种简洁的方式将其写入控制台,但是现在我想在WPF中使它更加整洁。
我之前的控制台应用程序如下所示:
class Program
{
static void Main(string[] args)
{
string[] tokens;
char[] separators = { ';' };
string str = "";
FileStream fs = new FileStream(@"D:\Dokumenter\Skole\6. semester\GUI\Exercises\Exercise2\02 deltagerliste.csv",
FileMode.Open);
StreamReader sr = new StreamReader(fs, Encoding.Default);
while ((str = sr.ReadLine()) != null)
{
tokens = str.Split(separators, StringSplitOptions.RemoveEmptyEntries);
Console.WriteLine(String.Format("{0,-20}", tokens[0]) +
String.Format("{0,-15}", tokens[1]) +
String.Format("{0,-15}", tokens[2]) +
String.Format("{0,-15}", tokens[3]));
}
Console.ReadLine();
}
}
效果很好,但我必须承认,我很难找到从WPF应用程序开始的位置。
到目前为止,我已经使用.csv文件的四个标头(由于它有四列)构建了以下XAML代码,并且我假设我必须找到一种方法将相应的行放入相应的列中。
<Window x:Class="WpfApplication1.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Deltagerliste" Height="350" Width="525" WindowStartupLocation="CenterScreen" WindowState="Maximized"
Background="DeepPink"
>
<ListView HorizontalAlignment="Left" Height="320" VerticalAlignment="Top" Width="517">
<ListView.View>
<GridView>
<GridViewColumn Header="First name"/>
<GridViewColumn Header="Last name"/>
<GridViewColumn Header="ID"/>
<GridViewColumn Header="Email"/>
</GridView>
</ListView.View>
</ListView>
我的主要和初始问题是我如何将文件读入ListView。我是C#和XAML的新手,虽然我很清楚如何在C#中打开和读取文件,但XAML中的语法对我来说有点混乱。
答案 0 :(得分:16)
首先:创建一个将每行保存数据的类。
public class Person
{
public string FirstName { get; set; }
public string LastName { get; set; }
public int ID { get; set; }
public string Email { get; set; }
public Person(string firstName, string lastName, int id, string email)
{
FirstName = firstName;
LastName = lastName;
ID = id;
Email = email;
}
}
然后创建一个函数,该函数将从CSV文件返回人员列表:
public IEnumerable<Person> ReadCSV(string fileName)
{
// We change file extension here to make sure it's a .csv file.
// TODO: Error checking.
string[] lines = File.ReadAllLines(System.IO.Path.ChangeExtension(fileName, ".csv"));
// lines.Select allows me to project each line as a Person.
// This will give me an IEnumerable<Person> back.
return lines.Select(line =>
{
string[] data = line.Split(';');
// We return a person with the data in order.
return new Person(data[0], data[1], Convert.ToInt32(data[2]), data[3]);
});
}
然后使用适当的绑定配置listview列。 注意 x:Name属性是您将用于在表单的.cs文件中访问此列表视图的名称:
<ListView x:Name="ListViewPeople">
<ListView.View>
<GridView>
<GridViewColumn Header="First name" Width="100" DisplayMemberBinding="{Binding Path=FirstName}"/>
<GridViewColumn Header="Last name" Width="150" DisplayMemberBinding="{Binding Path=LastName}"/>
<GridViewColumn Header="ID" Width="40" DisplayMemberBinding="{Binding Path=ID}"/>
<GridViewColumn Header="Email" Width="200" DisplayMemberBinding="{Binding Path=Email}"/>
</GridView>
</ListView.View>
</ListView>
最后,将listview的ItemsSource绑定到返回Person列表的方法:
public MainWindow()
{
InitializeComponent();
// We can access ListViewPeople here because that's the Name of our list
// using the x:Name property in the designer.
ListViewPeople.ItemsSource = ReadCSV("example");
}
CSV文件
Henk;van Dam;1;henk.van.dam@gmail.com
Alex;the Great;2;alex.the_great@live.nl
最终结果