Category: .NET

10 Jun 2016 22:34

Joined:	28/04/2014
Level:	Bronze
Points:	31

Points:	4

Valiadate EmployeeNumber dynamically using RegEx

In my scenorio need to skip the known error while writing in log file in catch block.
For example "The Employee Number 1256987 was not found"
but the employee number is dynamic (1256987).
I have assigned the string variable like
string knownError ="The Employee Number [+EmpNo+] was not found";

In catch block , i have to compare like this
if (knownError.contains(ex.message());
{
//some logic
}
else
{
log.writeline(ex.message());
}

How can i check [+EmpNo+] using RegEx.

#766427

12 Jun 2016 21:42

Joined:	29/05/2009
Level:	Gold
Points:	10380

Points:	3

Hi
if you need numeric only means try this code



Regex regex = new Regex(@"^\d$");

OR

if (!System.Text.RegularExpressions.Regex.IsMatch(textbox.Text, "^[0-9]*$"))

Or

<cc1:FilteredTextBoxExtender ID="Filteredtextboxextender1" runat="server" FilterType="Numbers"
                                                            TargetControlID="txtRequestId">
                                                        </cc1:FilteredTextBoxExtender>

Name : Dotnet Developer-2015
Email Id : kumaraspcode2009@gmail.com

'Not by might nor by power, but by my Spirit,' says the LORD Almighty.

#766434

12 Jun 2016 22:59

Joined:	13/06/2007
Level:	Gold
Points:	21327

Points:	2

If you want to check message in exception block using exception.Message property, why you need RegEx here ? just check if database contains the employee record if not then directly throw exception

Thanks
Koolprasd2003
Editor, DotNetSpider MVM
Microsoft MVP 2014 [ASP.NET/IIS]

#766551

20 Jun 2016 05:13

Joined:	12/12/2013
Level:	Gold
Points:	529

Points:	4

Hi,

Kindly try with the following Logic for your requirement. It May resolve your Problem.

class Program
{
private static Regex regex = new Regex("^[0-9]+$", RegexOptions.Compiled);

static void Main(string[] args)
{
Stopwatch watch = new Stopwatch();
string test = int.MaxValue.ToString();
int value;

watch.Start();
for(int i=0; i< 1000000; i++)
{
int.TryParse(test, out value);
}
watch.Stop();
Console.WriteLine("TryParse: "+watch.ElapsedTicks);

watch.Reset();
watch.Start();
for (int i = 0; i < 1000000; i++)
{
IsDigitsOnly(test);
}
watch.Stop();
Console.WriteLine("IsDigitsOnly: " + watch.ElapsedTicks);

watch.Reset();
watch.Start();
for (int i = 0; i < 1000000; i++)
{
regex.IsMatch(test);
}
watch.Stop();
Console.WriteLine("Regex: " + watch.ElapsedTicks);

Console.ReadLine();
}

static bool IsDigitsOnly(string str)
{
foreach (char c in str)
{
if (c < '0' || c > '9')
return false;
}

return true;
}
}

#766588

21 Jun 2016 01:04

Joined:	05/06/2009
Level:	Gold
Points:	10245

Points:	4

This is customize the complete error. So all are depending on your messages. You have to handle it each and every part of your error messages. You can try the as follows. It is sample but you have to try your own logic based on the error message


string knownError ="The Employee Number [+EmpNo+] was not found";
In catch block , i have to compare like this
if (ex.message()  // matches first part "The Employee Number");
{
if (ex.message()  // matches second part " was not found");
{
   // get the Emp number from the string and show the exception
}
}
else
{
log.writeline(ex.message());
}

By Nathan
Direction is important than speed

Valiadate EmployeeNumber dynamically using RegEx

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