我正在通过C#中的Windows窗体选择带有文件夹路径的文本文件,并收集有关每个路径的信息。此时,我可以导入文件并仅显示文本文件中的第二个路径,但没有关于该文件夹的信息。这是我的代码:
private void btnFilePath_Click(object sender, EventArgs e)
{
//creating a stream and setting its value to null
Stream myStream = null;
//allowing the user select the file by searching for it
OpenFileDialog open = new OpenFileDialog();
open.InitialDirectory = "c:\\";
open.Filter = "txt files (*.txt)|*.txt";
open.FilterIndex = 2;
open.RestoreDirectory = true;
//if statement to print the contents of the file to the text box
if (open.ShowDialog() == DialogResult.OK)
{
try
{
if ((myStream = open.OpenFile()) != null)
{
using (myStream)
{
txtFilePath.Text = string.Format("{0}", open.FileName);
if (txtFilePath.Text != "")
{
lstFileContents.Text = System.IO.File.ReadAllText(txtFilePath.Text);
//counting the lines in the text file
using (var input = File.OpenText(txtFilePath.Text))
{
while (input.ReadLine() != null)
{
//getting the info
lstFileContents.Items.Add("" + pathway);
pathway = input.ReadLine();
getSize();
getFiles();
getFolders();
getInfo();
result++;
}
MessageBox.Show("The number of lines is: " + result, "");
lstFileContents.Items.Add(result);
}
}
else
{
//display a message box if there is no address
MessageBox.Show("Enter a valid address.", "Not a valid address.");
}
}
}
}
catch (Exception ex)
{
MessageBox.Show("Error: Could not read the file from disk. Original error: " + ex.Message);
}
}
}
我在考虑使用foreach将每一行复制到一个变量,或者将每一行放入一个数组中并循环遍历它以收集信息。
任何人都可以告诉我哪些是最合适的,所以我可以去MSDN并自己学习,因为,我更愿意学习它而不是给出代码。
谢谢!
答案 0 :(得分:7)
我不确定你的问题是什么,因为你似乎已经回答了它。如果您希望我们对其进行审核,您的问题将更适合代码审核:https://codereview.stackexchange.com/
如果您想使用MSDN,请查看此处:http://msdn.microsoft.com/en-us/library/System.IO.File_methods(v=vs.110).aspx
剧透警报,我就是这样做的:
string[] lines = null;
try
{
lines = File.ReadAllLines(path);
}
catch(Exception ex)
{
// inform user or log depending on your usage scenario
}
if(lines != null)
{
// do something with lines
}
答案 1 :(得分:5)
将所有行聚集到数组中我将使用
var lines = File.ReadAllLines(path);
答案 2 :(得分:2)
如果你想要更多的参考而不是答案本身,请逐一采用这些链接,所有这些链接都以不同的方式解释。
How to: Read From a Text File (C# Programming Guide)
How to: Read a Text File One Line at a Time (Visual C#)
希望它能帮助您了解有关C#中文件IO操作的更多信息。