在字符串中拆分\\“

Question

So I have this CSV file where it's contents are like so...

"Name","Age","Gender","City, State"

So far I've been successful at removing the double quotes everywhere - except for the first and last entries with the following code.

using (StreamReader reader = new StreamReader(outputReport))
{
    headers = reader.ReadLine().Split(new string[] { "\",\"" }, 
               StringSplitOptions.RemoveEmptyEntries);
} 

This results in an array of strings with the contents of:

\"Name
Age
Gender
City, State\"

I've made several attempts to remove the \\"

Including adding this to my split criteria:

String.Concat('\\','\"')

And this:

"\\\""

But nothing seems to work, I feel like I should be able to remove these in the Split method. It's kind of a tricky string to match. Any ideas? Thanks for the help!

Answer 1

Don't use String.Split() to read CSV data!

There are too many edge cases. You've just hit the tip of the iceberg here. Also, it's much slower than it needs to be. You want a dedicated CSV parser. There's one built into the framework ( Microsoft.VisualBasic.FileIO.TextFieldParser ), and there are several you can download and use, including FastCSV and my own EasyCSV .

Answer 2

try this: s.Replace(@""",","~").Replace(@"""","~").Split('~'); where s is your string value of a csv line read.

Answer 3

You may split by characters "(double qoute), '(Comma) and /(Slash). Try this:

        using (StreamReader reader = new StreamReader(outputReport))
        {
            char [] splitByCharSet = new char[3]{'\"', '\\', ','};
            headers = reader.ReadLine().Split(splitByCharSet, StringSplitOptions.RemoveEmptyEntries);
        }