如何将数组转换为文本文件?
问题描述:
我目前正在创建一个Windows Phone 7应用程序。如何将数组的所有值转换为文本文件,以便可以将存储在特定数组中的所有值存储在另一个页面列表框中,然后存储在独立存储器中。 谢谢! :(如何将数组转换为文本文件?
这个方法我试过,但它不工作。 对于ViewList.xaml.cs
private void addListBtn_Click(object sender, RoutedEventArgs e)
{
//Obtain the virtual store for application
IsolatedStorageFile myStore = IsolatedStorageFile.GetUserStoreForApplication();
//Create a new folder and call it "ImageFolder"
myStore.CreateDirectory("ListFolder");
//Create a new file and assign a StreamWriter to the store and this new file (myFile.txt)
//Also take the text contents from the txtWrite control and write it to myFile.txt
StreamWriter writeFile = new StreamWriter(new IsolatedStorageFileStream("ListFolder\\myFile.txt", FileMode.OpenOrCreate, myStore));
writeFile.WriteLine(retrieveDrinksListBox);
writeFile.Close();
}
FavouriteList.xaml.cs
private void PhoneApplicationPage_Loaded(object sender, RoutedEventArgs e)
{
//Obtain a virtual store for application
IsolatedStorageFile myStore = IsolatedStorageFile.GetUserStoreForApplication();
//This code will open and read the contents of retrieveDrinksListBox
//Add exception in case the user attempts to click “Read button first.
StreamReader readFile = null;
try
{
readFile = new StreamReader(new IsolatedStorageFileStream("ListFolder\\myFile.txt", FileMode.Open, myStore));
string fileText = readFile.ReadLine();
if (fileText != "")
{
listNumberListBox.Items.Add("List 1");
}
//The control txtRead will display the text entered in the file
listNumberListBox.Items.Add(fileText);
readFile.Close();
}
catch
{
MessageBox.Show("Need to create directory and the file first.");
}
答
您必须编写取走列表框中的序列化项目/数据,而不是列表框本身。
当阅读再次将它们反序列化。MSDN上的BinaryFormatter示例包含代码示例,向您展示如何将对象写入(文件)流以及如何从同一个流再次恢复对象。
答
如果你想显示在列表框中的文件的内容(比如,线),读取整个文件的内容在一次split行:
string fileText = readFile.ReadToEnd();
string[] lines = fileText.Split(Enviroment.NewLine.ToCharArray(),
StringSplitOptions.RemoveEmptyEntries);
listNumberListBox.Items.AddRange(lines);
其他方式是类似的,取从您的列表框项目,由joining他们用新的一行,并立即转储到文件:
string fileContents = string.Join(Environment.NewLine,
retrieveDrinksListBox.Items.Cast<string>());
writeFile.WriteLine(fileContents);