i would like to run a process with the parameter: filename.
string parms = filechooser.Filename ;
psi = new ProcessStartInfo("timidity", parms);
The problem occur when user choose a filename with some spaces.
Ho can i pass the parameter with the " " ?
Thanks
You could wrap the value in double quotes:
string parameters = string.Format("\"{0}\"", filechooser.Filename);
psi = new ProcessStartInfo("timidity", parameters);
That should work just fine, the spaces will be passed too.
However if you want to escape the filename (which depends on the app being started, i.e. timidity), do this:
string parms = string.Format("\"{0}\"", filechooser.Filename);
psi = new ProcessStartInfo("timidity", parms);
This will create a string based on the format \"{0}\". \" becomes a quote (") and {0} will be replaced with the first parameter after the format string, i.e. the filename.
You can try this out using the Start, Run feature or command prompt (cmd.exe). Enter timidity then your full filename, with spaces, in quotes and see if that works:
timidity "my filename"
Try this.
string parms = filechooser.Filename ;
psi = new ProcessStartInfo("timidity", "\"" + parms + "\"");
Backslash is your friend:
"\"timidity\""
Related
my code is
a.exe
string programName = AppDomain.CurrentDomain.FriendlyName;
ProcessStartInfo proc = new ProcessStartInfo();
proc.FileName = "b.exe"
proc.Arguments = programName + " \"" + AppDomain.CurrentDomain.BaseDirectory + "\"";
Process.Start(proc)
and check the value another program
b.exe
MessageBox.Show(args[0]);
MessageBox.Show(args[1]);
i predict value is
args[0] = a.exe
args[1] = D:\my test\with space\Folder\
but the value is
args[0] = a.exe
args[1] = D:\my test\with space\Folder"
QUESTION
BaseDirectory : C:\my test\with space\Folder\
so i cover BaseDirectory with " because has space.
as a result i want
b.exe a.exe "C:\my test\with space\Folder\"
but at b.exe check args[1] value is
D:\my test\with space\Folder"
where is my backslash and why appear "
help me please...
As Kayndarr already pointed out correctly in the comments, you are escaping " in your path.
There are certain characters which the compiler will not interpret as part of the string, due to their special meaning.
In order to let the compiler know, you want those characters interpreted as part of the string instead, you have to write them in a so called "escape-sequence".
I.e. that means putting a backslash in front of them.
Since the backslash itself has therefor also a special meaning as escape-character - you have to escape the slash, if you want it to be interpreted as part of the string.
"\\"
Will generate a literal string with one backslash in it, since the first backslash is used to escape the second.
The fix in your example would therefor look as follows:
string programName = AppDomain.CurrentDomain.FriendlyName;
ProcessStartInfo proc = new ProcessStartInfo();
proc.FileName = "b.exe"
proc.Arguments = programName + "\\" + AppDomain.CurrentDomain.BaseDirectory + "\\";
Process.Start(proc);
I am trying to pass a filepath to xcopy command for copying a folder from one location to another( CodedUI using C#).
While doing the same the problems is, I am trying to add double quotes around the path but it's not taking the correct path format.
Code:
string Path = "Some path to folder location";
// Tried all these solutions
Path = '\"' + Path + '\"';
Path = '\"' + Path + '\"';
Path = string.Format("\"{0}\"", Path );
Expected: ""Some path to folder location""
Actual:"\"Some path to folder location"\"
Please help.
In debugger you will see the backslash.
Sent your output to Console and you will see the result is good.
string Path = "Some path to folder location";
Path = "\"" + Path + "\"";
Console.WriteLine(Path);
From what i understand, you want to see
"Some path to folder location"
when you print it. If so, do:
string path = "\"Some path to folder location\"";
or
string path = "Some path to folder location";
var finalString = string.Format("\"{0}\"", path);
Maybe you should try verbatim strings like #"the\path\to\another\location".
This is the best way to write paths without having to struggle with escape codes.
EDIT:
You can use double quotes in a verbatim string:
#"""the\path\to\another\location"""
If you're trying to preserve two sets of double quotes, try building the string like so:
var path = "hello";
var doubleQuotes = "\"\"";
var sb = new StringBuilder(doubleQuotes)
.Append(path)
.Append(doubleQuotes);
Console.WriteLine(sb.ToString()); // ""hello""
Of course, if you want single quotes you simply swap doubleQuotes for singleQuotes = "\""; and get "hello".
To add double quote, you need to add '\' before ' " '.
Note that : if you are having '\' in path, you have to take care of it like below.
if path is "D:\AmitFolder"
string path = #"D:\AmitFolder";
//Or
path = "D:\\AmitFolder"
string str = "\"" + path + "\"";
Console.WriteLine(str);
here str will be "Some path to folder location"
Output:
as in above line we are adding "\"" string as prefix and "\"" as post fix of the main string.
While storing string values if any double quotes are to be added they need to be escaped using backshlash(\). Single quotes are used for character data. The following code should get the output needed.
Path = string.Format("\"{0}\"", Path);
Also I have created a small fiddle here.
string appPath = Path.GetDirectoryName(Path.GetDirectoryName(System.IO.Directory.GetCurrentDirectory()));
Process p = new Process();
p.StartInfo = new ProcessStartInfo("cmd.exe", #"/c opencvproject.exe " + #appPath + #"\\bin\\Debug\\center\\centerilluminate.jpg");
p.Start();
I tried this at my other computer and it works , however when I tried it in my new computer this doesn't work somehow. Anyone knows how to solve this? The program I am using is c# and im calling cmd to call c++ program which is opencvproject.exe
There are still multiple instances where I use cmd to trigger other c++ program and python scripts to run and those are not working too. I am not sure what am I doing wrong..
Hold the path between double quotation.
p.StartInfo = new ProcessStartInfo("cmd.exe", "/c opencvproject.exe \"" + appPath + "\\bin\\Debug\\center\\centerilluminate.jpg\"");
Explanation
Character combinations consisting of a backslash () followed by a letter or by a combination of digits are called "escape sequences."
http://msdn.microsoft.com/ja-jp/library/h21280bw.aspx
# makes escape sequence no effect, so..
var s1 = #"\\bin\\Debug\\"; // This contains wrong path \\bin\\Debug\\
var s2 = "\\bin\\Debug\\"; // This contains right path \bin\Debug\
And need using escape sequence to hold the double quotation between double quotation.
var s3 = "\"\\bin\\Debug\\\""; // This contains "\bin\Debug\"
var s4 = #"\"\\bin\\Debug\\\""; // compile error
The # character automatically escapes characters in the string behind it, so you shouldn't double backslash your path.
Eg, where you have:
#"\\bin\\debug\\.."
it should either be:
#"\bin\debug\..."
or:
"\\bin\\debug\\.." (without the #)
Also, if your apppath contains spaces, then you should surround the entire string with " characters
I have a console file, which takes 6 arguments
I pass this argument using C# application, below code
try
{
intializeConnections();
string consolepath = System.Configuration.ConfigurationManager.AppSettings["ConsoleApp_backup"].ToString().Trim();
// string backupPath = System.Configuration.ConfigurationManager.AppSettings["DataBase_BackupPath"].ToString().Trim();
string backupPath = #"D:\backup\Smart Tracker\";
System.Diagnostics.Process proc = new System.Diagnostics.Process();
proc.StartInfo.FileName = consolepath;
// proc.StartInfo.Arguments = String.Format(consolepath, Pc, database, UserName, Password, "F", bacPath);
proc.StartInfo.Arguments = String.Format("{0} {1} {2} {3} {4} {5}", serverName, DatabaseName, UserId, pw, "F",backupPath );
//set the rest of the process settings
proc.Start();
clsGlobleFunction.InsertAuditTrailRecord_new(this.Name, "", "", "FullBackup Of Databse Done Sucessfull", clsGlobleFunction.ActiveUser);
MessageBox.Show("FullBackup Done Successfully!!!!");
}
catch (Exception ex)
{
MessageBox.Show(ex.Message + "Give Correct Path in input !!");
}
Its work perfectly, but whenever i pass argument which have space in it, like in this code in backup Folder path, i am passing folder path string backupPath = #"D:\backup\Smart Tracker\"
so, its not working, console application consider space as a ending of argument,
and showing this error..
so, how can i pass argument which have space!!!!
enclose your path within single quotes to consider the whole path as single string argument.
string backupPath = #"'D:\backup\Smart Tracker\'";
Encapsulate the spaced argument in quotations.
I.E. #"\"D:\backup\Smart Tracker\"";
Try using Environment.CommandLine, you'll have to parse it or wrap in quotes.
Escape the path with single single quotes ' '
string backupPath = #"'D:\backup\Smart Tracker\'";
Or if you prefer:
string backupPath = #"\"D:\backup\Smart Tracker\"";
I try below code and its works perfectly !!!
char c = Convert.ToChar(34);
string backupPath = c + #"D:\backup\Smart Tracker" + c;
public static void launchProcess(string processName, string arguments, out string output)
{
Process p = new Process
{
StartInfo = { UseShellExecute = false, RedirectStandardOutput = true, FileName = processName, Arguments = arguments }
};
p.Start();
output = p.StandardOutput.ReadToEnd();
p.WaitForExit();
}
And if my arguments contains the file names like:
D:\Visual Studio Projects\ProjectOnTFS\ProjectOnTFS
Then I get the error:
It'll need doubles quotes, but will also likely need an # to treat the string word-for-word (verbatim string) i.e. the "\" has a special meaning in string e.g. \t means a tab, so we want to ignore the \
So not only the double quotes, but also #
string myArgument = #"D:\Visual Studio Projects\ProjectOnTFS\ProjectOnTFS";
I use the following in most of my apps (if required) to add double quotes at the start and end of a string if there are white spaces.
public string AddQuotesIfRequired(string path)
{
return !string.IsNullOrWhiteSpace(path) ?
path.Contains(" ") && (!path.StartsWith("\"") && !path.EndsWith("\"")) ?
"\"" + path + "\"" : path :
string.Empty;
}
Examples..
AddQuotesIfRequired(#"D:\Visual Studio Projects\ProjectOnTFS\ProjectOnTFS");
Returns "D:\Visual Studio Projects\ProjectOnTFS\ProjectOnTFS"
AddQuotesIfRequired(#"C:\Test");
Returns C:\Test
AddQuotesIfRequired(#"""C:\Test Test\Wrap""");
Returns "C:\Test Test\Wrap"
AddQuotesIfRequired(" ");
Returns empty string
AddQuotesIfRequired(null);
Returns empty string
EDIT
As per suggestion, changed the name of the function and also added a null reference check.
Added check to see if double quotes already exist at the start and end of string so not to duplicate.
Changed the string check function to IsNullOrWhiteSpace to check for white space as well as empty or null, which if so, will return an empty string.
I realize this is an old thread but for people who see this after me, you can also do:
string myArgument="D:\\Visual Studio Projects\\ProjectOnTFS\\ProjectOnTFS"
By escaping the back slashes you do not have to use the # symbol. Just another alternative.