读取多个文件StreamReader

Question

I have read and researched this throughout the internet and hoping now someone can help me through this. I am writing to read three different text files with different names, but I need to read through the text file name in order to determine which method I have to execute for that particular file. This is what I have so far, any help would be greatly appreciated.

var readers = new List<StreamReader>();

foreach (var filename in names_of_files)
{
    if (do something?)
    {
        switch
    }
}

using (StreamReader file = new StreamReader(filename))
{
  (reads the file and does other stuff)
}

Below is the method that I am using to select multiple files.

private void LoadNewFile()
{
    OpenFileDialog ofd = new OpenFileDialog();
    ofd.Multiselect = true;
    System.Windows.Forms.DialogResult dr = ofd.ShowDialog();
    ofd.Filter = "Text Files(*.txt) | *.txt";

    foreach (String file in ofd.FileNames)
    {
        if (dr == DialogResult.OK)
        {
            userSelectedFilePath += file;
            names_of_files.Add(userSelectedFilePath);
        }
    }
}

Answer 1

You can loop through the file names and process it differently based on the filename.

foreach (var filename in names_of_files)
{
    using (StreamReader file = new StreamReader(filename))
    {
        if (filename.Contains(".txt"))
        {
            // Process text tile
            MyTextProcessingMethod(file);
        }
        else if (filename.Contains(".png"))
        {
            // Do something with the image
            MyImageProcessingMethod(file);
        }
        else if (filename.Contains("_specialCode")) {
            // Another file that has special processing based on its file name
            MySpecialProcessingMethod(file);
        }
    }
}