如何将PascalCase转换为拆分单词？

Question

I have variables containing text such as:

ShowSummary
ShowDetails
AccountDetails

Is there a simple way function / method in C# that I can apply to these variables to yield:

"Show Summary"
"Show Details"
"Account Details"

I was wondering about an extension method but I've never coded one and I am not sure where to start.

Answer 1

请看Jon Galloway撰写的这篇文章和Phil的一篇文章

Answer 2

The best would be to iterate through each character within the string. Check if the character is upper case. If so, insert a space character before it. Otherwise, move onto the next character.

Also, ideally start from the second character so that a space would not be inserted before the first character.

Answer 3

In the application I am currently working on, we have a delegate based split extension method. It looks like so:

public static string Split(this string target, Func<char, char, bool> shouldSplit, string splitFiller = " ")
{
    if (target == null)
        throw new ArgumentNullException("target");

    if (shouldSplit == null)
        throw new ArgumentNullException("shouldSplit");

    if (String.IsNullOrEmpty(splitFiller))
        throw new ArgumentNullException("splitFiller");

    int targetLength = target.Length;

    // We know the resulting string is going to be atleast the length of target
    StringBuilder result = new StringBuilder(targetLength);

    result.Append(target[0]);

    // Loop from the second character to the last character.
    for (int i = 1; i < targetLength; ++i)
    {
        char firstChar = target[i - 1];
        char secondChar = target[i];

        if (shouldSplit(firstChar, secondChar))
        {
            // If a split should be performed add in the filler
            result.Append(splitFiller);
        }

        result.Append(secondChar);
    }

    return result.ToString();
}

Then it is could be used as follows:

string showSummary = "ShowSummary";
string spacedString = showSummary.Split((c1, c2) => Char.IsLower(c1) && Char.IsUpper(c2));

This allows you to split on any conditions between two char s, and insert a filler of your choice (default of a space).

Answer 4

try something like this

var word = "AccountDetails";
word = string.Join(string.Empty,word
    .Select(c => new string(c, 1)).Select(c => c[0] < 'Z' ? " " + c : c)).Trim();