I want to replace all Special Characters which can't be parse in URL including space, double space or any big space with '-' using C#.
I don't want to use any Parse Method like System.Web.HttpUtility.UrlEncode.
How to do this ? I want to include any number of space between two words with just one '-'.
For example, if string is Hello# , how are you?
Then, Result should be, Hello-how-are-you, no '-' if last index is any special character or space.
3 Answers
string str = "Hello# , how are you?";
string newstr = "";
//Checks for last character is special charact
var regexItem = new Regex("[^a-zA-Z0-9_.]+");
//remove last character if its special
if (regexItem.IsMatch(str[str.Length - 1].ToString()))
{
newstr = str.Remove(str.Length - 1);
}
string replacestr = Regex.Replace(newstr, "[^a-zA-Z0-9_]+", "-");
INPUT: Hello# , how are you?
OUTPUT: Hello-how-are-you
EDIT: Wrap it inside a class
public static class StringCheck
{
public static string Checker()
{
string str = "Hello# , how are you?";
string newstr = null;
var regexItem = new Regex("[^a-zA-Z0-9_.]+");
if (regexItem.IsMatch(str[str.Length - 1].ToString()))
{
newstr = str.Remove(str.Length - 1);
}
string replacestr = Regex.Replace(newstr, "[^a-zA-Z0-9_]+", "-");
return replacestr;
}
}
and call like this,
string Result = StringCheck.Checker();
string[] arr1 = new string[] { " ", "@", "&" };
newString = oldString;
foreach repl in arr1
{
newString= newString.Replace(repl, "-");
}
Of course you can add into an array all of your spec characters, and looping trough that, not only the " ".
More about the replace method at the following link
You need two steps to remove last special character and to replace all the remaining one or more special characters with _
public static void Main()
{
string str = "Hello# , how are you?";
string remove = Regex.Replace(str, @"[\W_]$", "");
string result = Regex.Replace(remove, @"[\W_]+", "-");
Console.WriteLine(result);
Console.ReadLine();
}
