C# string.split() separate string by uppercase

问题

I've been using the Split() method to split strings. But this work if you set some character for condition in string.Split(). Is there any way to split a string when is see Uppercase?

Is it possible to get few words from some not separated string like:

DeleteSensorFromTemplate

And the result string is to be like:

Delete Sensor From Template

回答1:

Use Regex.split

string[] split =  Regex.Split(str, @"(?<!^)(?=[A-Z])");

回答2:

If you do not like RegEx and you really just want to insert the missing spaces, this will do the job too:

public static string InsertSpaceBeforeUpperCase(this string str)
{   
    var sb = new StringBuilder();

    char previousChar = char.MinValue; // Unicode '\0'

    foreach (char c in str)
    {
        if (char.IsUpper(c))
        {
            // If not the first character and previous character is not a space, insert a space before uppercase

            if (sb.Length != 0 && previousChar != ' ')
            {
                sb.Append(' ');
            }           
        }

        sb.Append(c);

        previousChar = c;
    }

    return sb.ToString();
}

回答3:

Another way with regex:

public static string SplitCamelCase(string input)
{
   return System.Text.RegularExpressions.Regex.Replace(input, "([A-Z])", " $1", System.Text.RegularExpressions.RegexOptions.Compiled).Trim();
}

来源：https://stackoverflow.com/questions/36147162/c-sharp-string-split-separate-string-by-uppercase