regular expression

[fififlowertot]

Hi, I want to check if the string ends with '-0000' when all the remaining characters are numbers. I tried Regex.IsMatch(mystring, @"\d*(0){4}") but it returns true even when there is no '-' which regular expression to check with for a string which ends with '-0000'

[Sneha Bisht]

one more method u can check enter value on server side or in page.

[Sneha Bisht]

try [.\-0000] in expression

[Ravi Sant]

This one worked for me:

System.Text.RegularExpressions.Regex.IsMatch(str, @"[.\-]\d*(0){4}");

when tested:

bool b1 = Do("10.0000"); //false
b1 = Do("10-0000"); //true
b1 = Do("10-0000/"); //true
b1 = Do("10-0000."); //true
b1 = Do("10-0000/-"); //true

where Do() is

private bool Do(string str) { return System.Text.RegularExpressions.Regex.IsMatch(str, @"[.\-]\d*(0){4}"); }

♫ 99 little bugs in the code, 99 bugs in the code We fix a bug, compile it again 101 little bugs in the code ♫

[AspDotNetDev]

fififlowertot wrote:

when all the remaining characters are numbers

Not sure what you mean by that. However, the following regex will ensure the string ends with a dash followed by exactly 4 numeric digits.

-[0-9]{4}$

If you want to ensure the whole string is zero or more numeric digits followed by a dash followed by exactly 4 zeroes, this would work:

^[0-9]*-0{4}$

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S<T>::f(U) // Out of line.

](http://msdn.microsoft.com/en-us/library/8yk3t00s(v=vs.71).aspx)