Solved

C# Unrecognized Escape Sequence Error

Posted on 2016-10-02
5
59 Views
Last Modified: 2016-10-02
I’m trying to write some simple C# code in a winform app that gets the same results as a VB.Net sub. Please help me correct the error. The following VB (in a winform app) code runs without any errors:

Dim retval As String
Dim ls_temp As String
ls_temp = "C:\Program Files (x86)\Visual CUT 11\Visual CUT.exe " & _
"-e ""C:\test\Email_Test_1aa.rpt"""
retval = Shell(ls_temp)

The following C# code results in an “Unrecognized escape sequence” error:
string retval;
string ls_temp;
retval = C:\Program Files (x86)\Visual CUT 11\Visual CUT.exe " +
"-e ""C:\test\Email_Test_1aa.rpt""";
0
Comment
Question by:Mark01
  • 2
  • 2
5 Comments
 
LVL 78

Accepted Solution

by:
David Johnson, CD, MVP earned 300 total points
ID: 41825510
Change the single \'s to \\'s to escape the escape sequence
\t = tab character
\r = return character
\n = newline character

  string retval;
            retval = "C:\\Program Files (x86)\\Visual CUT 11\\Visual CUT.exe " + "-e "  + "C:\\test\\Email_Test_1aa.rpt";
            Console.WriteLine(retval);
            Console.ReadLine();

Open in new window

0
 
LVL 44

Assisted Solution

by:AndyAinscow
AndyAinscow earned 200 total points
ID: 41825512
An alternative is to use the @ symbol with the string, this tells the compiler to ignore all escape sequence characters.
@"C:\Program Files (x86)\Visual CUT 11\Visual CUT.exe "  is the same as "C:\\Program Files (x86)\\Visual CUT 11\\Visual CUT.exe "


ps. I'm surprised the VB code worked, there are spaces in the path
0
 

Author Comment

by:Mark01
ID: 41825557
That resolved the error. Can someone give me a hint to the C# equivalent of the following VB code:
        retval = Shell(ls_temp)
0
 
LVL 78

Assisted Solution

by:David Johnson, CD, MVP
David Johnson, CD, MVP earned 300 total points
ID: 41825570
Long-winded but it works
 Process process = new Process();
        process.StartInfo.FileName = "[program name here]";
        process.StartInfo.Arguments = "[arguments here]";
        process.StartInfo.WindowStyle = ProcessWindowStyle.Maximized;
        process.Start();
        process.WaitForExit();
        int code = process.ExitCode;

Open in new window


https://msdn.microsoft.com/en-us/library/system.diagnostics.process(v=vs.110).aspx
0
 

Author Closing Comment

by:Mark01
ID: 41825593
Thank you, David and Andy.
0

Featured Post

3 Use Cases for Connected Systems

Our Dev teams are like yours. They’re continually cranking out code for new features/bugs fixes, testing, deploying, testing some more, responding to production monitoring events and more. It’s complex. So, we thought you’d like to see what’s working for us.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Many of us here at EE write code. Many of us write exceptional code; just as many of us write exception-prone code. As we all should know, exceptions are a mechanism for handling errors which are typically out of our control. From database errors, t…
Today I had a very interesting conundrum that had to get solved quickly. Needless to say, it wasn't resolved quickly because when we needed it we were very rushed, but as soon as the conference call was over and I took a step back I saw the correct …
This tutorial gives a high-level tour of the interface of Marketo (a marketing automation tool to help businesses track and engage prospective customers and drive them to purchase). You will see the main areas including Marketing Activities, Design …
In this video I am going to show you how to back up and restore Office 365 mailboxes using CodeTwo Backup for Office 365. Learn more about the tool used in this video here: http://www.codetwo.com/backup-for-office-365/ (http://www.codetwo.com/ba…

911 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

21 Experts available now in Live!

Get 1:1 Help Now