I met such a problem, when i want to replace millions or more matching words with new line regex \n ( to split the content into millions lines)
.
The replacing tasks looks took a very long time. and looks no responding.
I'm Using the lastest version.in window 10.
Can you check if this can be solved ?
\n is an escape sequence as well as a regular expression. Select Escape Sequence instead of Regular Expressions in the Replace dialog box to increase the replacement speed.
I have a massive (400Mb) CSV file that I need to upload into a database.
The problem is that some lines contain 16 commas (",") and some 17.
I need to find the lines that contain 17 commas so that I can fix them (shouldn't be that many).
Is there a way to search in sublime so that each line becomes visible, that repeatedly contains the same particular character?
This is a job for regular expressions!
Instructions on activating regexes in Sublime Text
You want the regex (.*,){17} - i.e., seventeen instances of any old nonsense followed by a comma.
In my Visual Studio (2010 C#) solution, I need to delete all lines of code that contain a matching string pattern.
For example, I want to delete all lines that contain ".BackColor = System.Drawing.Color.Yellow;". The Find and Replace feature of Visual Studio isn't good enough, because you cannot tell it to wipe out the matching lines.
So I think I would need a macro for that. Any help is appreciated.
You can use the "Find and Replace" feature of Visual Studio to delete matching lines.
The key is to match the whole line including the end of line character as well. You can do this in wildcard or regular expression mode. In wildcard mode, begin the expression with * and end the expression with *\n. The asterisks will match any number of characters, and the \n will match the end of line character.
In your case, your find query would be "*.BackColor = System.Drawing.Color.Yellow;*\n". The replace field should then be left blank.
To enable wildcard mode, select 'Wildcards' in the 'Use:' field of the 'Find options' section of the 'Find and Replace' dialog.
With Visual Studio 2015, 2017, 2019, 2022 this worked for me. Open Search window, check the "use regular expressions" checkmark. Fill "find what" with
.*myCodeFragmentHere.*\r?\n
fill "replace" with an empty string.
Remove all regexp (brackets, dots) from the code fragment in your search expression.
I tend to create macros in VS by running the macro recorder then editing the resulting code.
So, manually search for the pattern, and press F3. Stop the macro then (or press the line-start key, select to end of line, press delete and then stop the macro).
Edit the macro, the command to delete a line is:
DTE.ActiveDocument.Selection.SelectLine()
DTE.ActiveDocument.Selection.Delete()
You can set the find text with FindText:
DTE.ActiveDocument.Selection.FindText(".BackColor = System.Drawing.Color.Yellow;", vsFindOptions.vsFindOptionsFromStart)
Building upon #HolgerJeromin's answer: instead of guessing the right indentation match (could be tabs could be spaces could be more or less), I prefer matching the beginning of the line using the ^\s* pattern.
For example, to remove all lines having a ProducesResponseType attribute, I use
^\s*\[ProducesResponseType.*\n
(works on Windows too using VS 2019).
For Visual Studio 2015 (in which there are no macros and no wildcards), I did the following:
Open Find and Replace (Ctrl+H)
Set to use Regular Expressions (Alt+E)
Set the Find box to
({line of code string})\r?\n({next line tabbing})
Leave the Replace box empty
Replace
Where-
{line of code string} = the line of code you wish to remove. Note you need to escape characters such as parenthesis and quotes with a backward slash ()
{next line tabbing} = the number of spaces preceding the next line of code (without this your line will be removed but the next line would have double the spaces before it
For example, to remove
DoSomething("hello");
From -
class A
{
void SomeMethod()
{
DoSomething("hello");
DoSomethingElse();
}
}
Replace the following
(DoSomething(\"hello\")\;)\r?\n({ })
I was trying to remove an attribute ([OperationContract] in my case) and none of the other answers worked for me. I finally got it to work by using the following:
\[OperationContract\]\r\n\t\t (Use Regular Expressions)
Is it possible to match the first word in a file using Visual Studio Regex?
e.g. ^using matches multiple statements where "using" matches the first five characters on a line.
I need to find and replace the only first using statement where "using" matches the first five characters in the file.
Thanks,
M
Well, regex matches against a string. So, you could try reading the first line of the file into a string and execute a regex match against that string.
Sometimes i would like to search for text containing a new line character and there are other times i would like to replace text with a new line character.
How can i do this with visual studio 2008?
Use a RegEx search:
In the Find Dialog - Expand "Find Options"
Check the box for Use: Regular Expressions
Next to the search box there is now an arrow that is active, it will show you available RegEx options/values.
The value you want will be \n. So "SearchValue\n" should do it.
Be aware that that its not a standard RegEx that you use, it's VS specific.
Replace can also use the RegEx values.
Adding on to Brian Schmitt's answer...
Regular expression searches using \n work as expected. However you have to be a little careful when using \n in regex replaces with Visual Studio 2008. For example, if you search for \n and replace with \n (yes, the exact same thing) all of the line breaks in your file(s) will be converted to Unix-style newlines (LF). This may be a bug in Visual Studio. I find it hard to believe this is the intended functionality.
To get around this, you can use tagged expressions, using curly braces: e.g. search for SearchValue{\n} and replace with ReplaceValue\1. This ensures that the same line-break character(s) that were found when searching will also be used when replacing.
You can try my Multiline Search and Replace Macro.