Removing Characters other than letters or numbers

[Yosh]

I have a string where I want to remove only those characters that are
letters or numbers. Does .NET provide an easy method to do this?

TIA!

 

[john doe]

char.IsLetterOrDigit if what you want, looping through the string e.g.

for (int i=0;i < str.Length;i++)
{
if ( !char.IsLetterOrDigit(str) )
// Code here
}

 

[Michael Bray]

I have a string where I want to remove only those characters that are
letters or numbers. Does .NET provide an easy method to do this?

TIA!

Regex.Replace would work best for this... Function prototype is:

[C#]
public static string Replace (
string input,
string pattern,
string replacement
)

Example:

string newString;
newString = Regex.Replace(inputString, "[a-zA-Z0-9]", string.Empty);

-mdb

 

[dcassar]

Try using a Regular Expression. That's the easiest way.

public string StripLettersAndNumbers(string input)
{
System.Text.RegularExpressions.Regex regex = new
System.Text.RegularExpressions.Regex("[A-Z0-9]",
System.Text.RegularExpressions.RegexOptions.IgnoreCase);
return regex.Replace(input, String.Empty);
}

 

[Jon Skeet [C# MVP]]

char.IsLetterOrDigit if what you want, looping through the string e.g.

for (int i=0;i < str.Length;i++)
{
if ( !char.IsLetterOrDigit(str) )
// Code here
}

Or even nicer:

foreach (char c in str)
{
if (char.IsLetterOrDigit(c))
{
...
}
}

Jon