我在使用以下代码时遇到了一些问题,需要帮助才能使URI字符串工作。
当我输入a
,b
时,它可以正常工作......我知道我的List<URI>
正在收集地址,但是自动完成功能不适用于地址。
我做了调试代码,ProcessFile()
似乎工作正常,匹配URI并收集它们。我在那里看到了七个地址。
但totalUris
声明中的col.Add()
实例是空的。我不知道为什么totalUris
列表没有填充。整件事情也有点慢。我确实看到了WPF的类似功能,他们使用了关键字。
我想知道我是否也必须在这里这样做,这将如何工作。这是让我入门的任何入门代码,非常感谢。
namespace WindowsFormsApp1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
public void addItems(AutoCompleteStringCollection col)
{
string favorites = @"C:\Users\zohal\Favorites";
List<Uri> totalUris = new List<Uri>();
if (File.Exists(favorites))
{
// This path is a file
ProcessFile(favorites, out totalUris);
col.Add(totalUris.ToString());
}
else if (Directory.Exists(favorites))
{
// This path is a directory
ProcessDirectory(favorites,col);
col.Add(totalUris.ToString());
}
else
{
Console.WriteLine("No file or directory to process");
}
col.Add(totalUris.ToString());
col.Add("Abel");
col.Add("Bing");
col.Add("Catherine");
col.Add("Varghese");
col.Add("John");
col.Add("Kerry");
}
public static void ProcessDirectory(string targetDirectory, AutoCompleteStringCollection col)
{
List<Uri> favoriteUrisInCurrentDirectory = new List<Uri>();
// Process the list of files found in the directory.
string[] fileEntries = Directory.GetFiles(targetDirectory);
foreach (string fileName in fileEntries)
//if (fileName == "desktop.ini") ???
//cumulativeUris.AddRange(favoriteUrisInCurrentDirectory = ProcessFile(fileName));
ProcessFile(fileName, out favoriteUrisInCurrentDirectory);
// Recurse into subdirectories of this directory.
string[] subdirectoryEntries = Directory.GetDirectories(targetDirectory);
foreach (string subdirectory in subdirectoryEntries)
ProcessDirectory(subdirectory,col);
}
// Insert logic for processing found files here.
public static void ProcessFile(string theFile, out List<Uri> totalUris)
{
Console.WriteLine("Processed file '{0}'.", theFile);
// Add the file to the list of internet shortcut files
StreamReader reader = File.OpenText(theFile);
System.String line;
List<Uri> favoriteUris = new List<Uri>();
while ((line = reader.ReadLine()) != null)
{
//Go through the file, and match any URIs, and add them to a list
Regex r = new Regex(@"(?<Protocol>\w+):\/\/(?<Domain>[\w@][\w.:@]+)\/?[\w\.?=%&=\-@/$,]*");
//Regex r = new Regex (@"http(s) ?://([\w-]+.)+[\w-]+(/[\w- ./?%&=])?$");
//Regex r = new Regex(@"http(s) ?://([\w-]+.)+[\w-]+(/[\w- ./?%&=])?$");
//Regex r = new Regex(@"(((ht|f)tp(s?))\://)?(www.|[a-zA-Z].)[a-zA-Z0-9\-\.]+\.(com|edu|gov|mil|net|org|biz|info|name|museum|us|ca|uk)(\:[0-9]+)*(/($|[a-zA-Z0-9\.\,\;\?\'\\\+&%\$#\=~_\-]+))*$");
// Match the regular expression pattern against a text string.
Match m = r.Match(line);
Uri currentUri;
while (m.Success)
{
currentUri = new Uri(m.ToString());
favoriteUris.Add(currentUri);
m = m.NextMatch();
}
}
totalUris = favoriteUris;
}
private void personalUrisTextBox_TextChanged(object sender, EventArgs e)
{
personalUrisTextBox.AutoCompleteMode = AutoCompleteMode.Suggest;
personalUrisTextBox.AutoCompleteSource = AutoCompleteSource.CustomSource;
AutoCompleteStringCollection DataCollection = new AutoCompleteStringCollection();
addItems(DataCollection);
personalUrisTextBox.AutoCompleteCustomSource = DataCollection;
}
}
}
你有一个目录
@“C:用户\ t
所以方法ProcessDirectory
将被调用,然后将遍历目录的所有文件。问题是你的方法ProcessFile
使用out关键字,这意味着列表将被清除,然后填充该文件中的Uris。因此,当调用最后一个文件时,如果它是空的,则列表将为空。
此外,ProcessDirectory
方法本身不会返回任何内容,也不会对输入进行任何更改。试试这个:
使用ref关键字而不是在这里:
public static void ProcessFile(string theFile, ref List<Uri> totalUris)
{
//.... rest of the code
totalUris.AddRange(favoriteUris);
}
也改变了ProcessDirectory
方法:
public static void ProcessDirectory(string targetDirectory, ref List<Uri> totalUris)
{
// **avoid reconstructing the list:** List<Uri> favoriteUrisInCurrentDirectory = new List<Uri>();
// Process the list of files found in the directory.
string[] fileEntries = Directory.GetFiles(targetDirectory);
foreach (string fileName in fileEntries)
ProcessFile(fileName, ref totalUris);
// Recurse into subdirectories of this directory.
string[] subdirectoryEntries = Directory.GetDirectories(targetDirectory);
foreach (string subdirectory in subdirectoryEntries)
ProcessDirectory(subdirectory, ref totalUris);
}
希望能帮助到你。