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Thanks for &nbsp;your quick solutions. 
 
I see one obstacle more.. The file which I want to read is not the one.. they can be more than one infact they also follow a pattern e.g. 
 
logfile.log 
logfile2015-12-20.1.log 
logfile2015-12-19.1.log 
logfile2015-12-18.1.log and so on..i.e. 
logfile2015-12-17.1.log 
logfile2015-12-16.1.log 
logfile2015-12-15.1.log 
logfile2015-12-14.1.log 
 
 
so should I read them one by one &nbsp;or there is something reading them in parallel or like regex.
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Hi Experts, 
 
I am having a log file and the following is written in the file. 
 
2015-12-21 10:38:49.976 [thread: 5540] [log_level:Information] [category:Trace] [priority:-1] message:&quot;On 12/21/2015 10:38:49 AM User:nav.rao@thank.com, Selected EMP Number: 7419 &quot;&nbsp;properties: {} 
2015-12-21 10:48:56.013 [thread: 3384] [log_level:Information] [category:Trace] [priority:-1] message:&quot;On 12/21/2015 10:48:56 AM User:ravjain@thank.com, Selected EMP Number: 1589 &quot;&nbsp;properties: {} 
 
 
I see its a pattern e.g. it starts with a Date and ends with {} so there can be n number of records like it in the file. 
for easyness I have pasted only two. 
 
Seems I need to use Regex in C# to find date and email address i.e. 2015-12-21 10:38:49.976 and nav.rao(not having @ information) and so on.. 
 
so as a outcome of c# regex I will get two records of information in case of current file. 
 
Please help me in doing a c# code with regex for this.
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Hi Experts,

I am having a log file and the following is written in the file. 

2015-12-21 10:38:49.976 [thread: 5540] [log_level:Information] [category:Trace] [priority:-1] message:"On 12/21/2015 10:38:49 AM User:nav.rao@thank.com, Selected EMP Number: 7419 " properties: {}
2015-12-21 10:48:56.013 [thread: 3384] [log_level:Information] [category:Trace] [priority:-1] message:"On 12/21/2015 10:48:56 AM User:ravjain@thank.com, Selected EMP Number: 1589 " properties: {}


I see its a pattern e.g. it starts with a Date and ends with {} so there can be n number of records like it in the file.
for easyness I have pasted only two.

Seems I need to use Regex in C# to find date and email address i.e. 2015-12-21 10:38:49.976 and nav.rao(not having @ information) and so on..

so as a outcome of c# regex I will get two records of information in case of current file.

Please help me in doing a c# code with regex for this.

Applying regular expression in c# to a log file

C# is an object-oriented programming language created in conjunction with Microsoft’s .NET framework. Compilation is usually done into the Microsoft Intermediate Language (MSIL), which is then JIT-compiled to native code (and cached) during execution in the Common Language Runtime (CLR).

The successor to Active Server Pages, ASP.NET websites utilize the .NET framework to produce dynamic, data and content-driven web applications and services. ASP.NET code can be written using any .NET supported language. As of 2009, ASP.NET can also apply the Model-View-Controller (MVC) pattern to web applications

ASP.NET

A regular expression ("regex") is a sequence of characters that define a search pattern, mainly for use in pattern matching with strings, or string matching, i.e. "find and replace"-like operations. Regular expression processors are found in several search engines, search and replace dialogs of several word processors and text editors, and in the command lines of text processing utilities, such as sed and AWK. Many programming languages provide regular expression capabilities, some built-in, for example Perl, JavaScript, Ruby, AWK, and Tcl, and others via a standard library, for example .NET languages, Java, Python and C++ (since C++11). Most other languages offer regular expressions via a library.