Validating textbox for string input

[sil3nt2004]

Hi,

I'm using to following method to validate for numeric input:

private bool IsNumeric(string strText)
{
try
{
int test = int.Parse(strText);
return true;
}
catch (Exception e)
{
return false;
}
}

How can I check for string input using a similar method?

Any help will be appreciated.

Thanx,
Ryno.

 

[kmfna]

Ryno,

not sure if you could automatically check it, since you can convert pretty much anything to a string, but here is a little function that I wrote to do the same thing.

public bool ValidAlpha(string AlphaStr)  // ++++++ Checks to make sure a string is Alphabetic ++++++
{
	foreach (char c in AlphaStr)
	{
		if (!char.IsLetter(c))
			return false;
	}
	return true;
}

Good luck,
Kevin

- "The truth hurts, maybe not as much as jumping on a bicycle with no seat, but it hurts.

 

[JurkMonkey]

You might want to look at regular expressions.


//Include this at the top of the file
using System.Text.RegularExpressions;



//No guarantees this code works because I'm doing it from memory



Regex IsStringAlphabetic = new Regex(@"[A-Z][a-z]*");
Regex IsNumeric = new Regex(@"[0-9]*");




string myText = "Test";
string myNumber = "123";




if (IsStringAlphabetic.Match(myText).Success)
{
//The string is only letters if it reaches this point
}

if (IsNumeric.Match(myNumber).Success)
{
//The string is only numeric if it reaches this point
}

 

[sil3nt2004]

Thank you guys, both solutions solved my problem.

Appreciate it!