Multiple Occurances Of Value In String

[Guest]

I am wanting to find any instance in a string where more then on occurance of a value occurs and replace it with a single occurance of the value. Specifically I want to search a text field and find any time where more then a single ' (tic) occurs in succession, and replace it with a single ' (tic).

Can this be done with a RegularExpression? Any example of how to do this?

 

[Martin Marinov]

You don't need to use regular expressions.
Try this

private string ReplaceString ( string Input )

{

if ( Input.IndexOf("''") != -1 )

Input = ReplaceString( Input.Replace("''", "'") );

return Input;

}

where Input is the string for search the ' symbol



Regards
Martin

I am wanting to find any instance in a string where more then on occurance

of a value occurs and replace it with a single occurance of the value.
Specifically I want to search a text field and find any time where more then
a single ' (tic) occurs in succession, and replace it with a single ' (tic).

 

[Benjamin Bittner]

Hallo Jim

I am wanting to find any instance in a string where more then on occurance

of a value occurs and replace it with a single occurance of the value.
Specifically I want to search a text field and find any time where more then
a single ' (tic) occurs in succession, and replace it with a single ' (tic).

Can this be done with a RegularExpression? Any example of how to do this?

Do you mean that u want to do that with every possible value? so if youd
have a string like that:

aa++bb77jjkk..--hhjjkkll

it would return

a+b7jk.-hjkl

if you just want to replace '' with ' you could do something like this:

txtUser.Text.Replace("''", "'")

or for +

txtUser.Text.Replace("++", "+")

if you tryin to prevent a user to use sql injection in some of your forms, i
suggest you construct more security functions than that.

regards benni

 

[Martin Marinov]

It won't be a problem
i've tested it with 3, 4,5 even 7 tic's and everything works fine ( if you
see the code the function is calling recursive to check if there is more
double tic's after replacing )

Regards
Martin

This will work fine when you know you have '', but what about when you

have 3 or 4 tic's? I know that I could write 10 replace statements, but I
was thinking there was an easier way...sy with a regular expression?

 

[Martin Marinov]

But if you still want to use regular expressions you can use this

System.Text.RegularExpressions.Regex r = new
System.Text.RegularExpressions.Regex(@"'+");
textBox2.Text = r.Replace(textBox1.Text, "'");



Regards
Martin

This will work fine when you know you have '', but what about when you

have 3 or 4 tic's? I know that I could write 10 replace statements, but I
was thinking there was an easier way...sy with a regular expression?