This question already has answers here:
Mysql server does not support 4-byte encoded utf8 characters
(8 answers)
Closed 7 years ago.
I have a integration with facebook and have notice that thay sends for example u+1f600 that is called a grinning face. When I try to store this in the MySQL Text field I get Server does not support 4-byte encoded so a fast solution is to remove all these special chars from the string.
The question is how? I know about the u+1f600 but I suspect that there could be more of them.
Consider switching to MySQL utf8mb4 encoding... https://mathiasbynens.be/notes/mysql-utf8mb4
Related
This question already has answers here:
Replace "\\" with "\" in a string in C#
(9 answers)
Escape Characters Aren't Working In Debugger (C#)
(2 answers)
How can I add \ symbol to the end of string in C#
(8 answers)
Why does .NET add an additional slash to the already existent slashes in a path?
(4 answers)
Escape sequence with "\" symbol
(4 answers)
Closed 2 years ago.
I'm struggling with escape characters in C#.
I'm saving a varchar field in a SQL Server database with a quote that needs to be escaped. So, an example could be something like that: (\"value\")
When my frontend application consume this value from API I get the value with a single escape character as i have in the DB.
The problem come up when consuming this API from C# code. For some reason this single character (\) is replaced for three of them (\\\).
After debugging the code I found that when I retrieve the data I get this:
debugging the value
When I click to check the value it seems OK:
Value into Text Visualizer
My question is why theese two extra backslashes are added and how can I get rid of them in order to get only one => (\").
Hope anyone can help me :)
Thanks!
You value should be correct. The debugger window escape the “/“, therefore it appears like escape(backslash)escape(quote).
(//)(/“)
This question already has answers here:
Determine a string's encoding in C#
(10 answers)
Closed 9 years ago.
I have a string read as a UTF8 (not from a file, can't check BOM).
The problem is that sometimes the original text was formed with another encoding, but was converted to UTF8 - so the string is not readable, sort of gibberish.
is it possible to detect that this string is not actual UTF8?
Thanks!
No. They're just bytes. You could try to guess, if you wanted, by trying different conversions and seeing whether there are valid dictionary words, etc., but in a theoretical sense it's impossible without knowing something about the data itself, i.e. knowing that it never uses certain characters, or always uses certain characters, or that it contains mostly words found in a given dictionary, etc. It might look like gibberish to a person, but the computer has no way of quantifying "gibberish".
This question already has answers here:
Finding out Unicode character name in .Net
(7 answers)
Closed 9 years ago.
I need functions to convert between a character (e.g. 'α') and its full Unicode name (e.g. "GREEK SMALL LETTER ALPHA") in both directions.
The solution I came up with is to perform a lookup in the official Unicode Standard available online: http://www.unicode.org/Public/6.2.0/ucd/UnicodeData.txt, or, rather, in its cached local copy, possibly converted to a suitable collection beforehand to improve the lookup performance).
Is there a simpler way to do these conversions?
I would prefer a solution in C#, but solutions in other languages that can be adapted to C# / .NET are also welcome. Thanks!
if you do not want to keep unicode name table in memory just prepare text file where offset of unicode value multiplied by max unicode length name will point to unicode name. for max 4 bytes length it wont be mroe than few megabytes. If you wish to have more compact implementation then group offset address in file to unicode names at start of file indexed by unicode value then enjoy more compact name table. but you have to prepare such file though it is not difficult.
This question already has answers here:
Closed 12 years ago.
Possible Duplicate:
How to get Url Hash (#) from server side
I have hash parameters in url
Can any body please help me to how to read Hash parameters value from Url using C#?
www.example.com/default.aspx#!type=1
How to read value of type?
The hash part is only used and available on the client. You cannot read it from ASP.NET / C#.
Split the URL at the hash (#).
Then split the second element from above at each ampersand (&)
Then split each of those at the equals (=) sign.
You will then have all the parameters and values.
If this was asking about a ASP.net application, you want to use Request.QueryString["type"] to get the value.
This question already has answers here:
Convert any object to a byte[]
(12 answers)
Closed 7 years ago.
I did a select statement in sql and 1 of the column return me this.
There is a need to query from that sql column, but as this is an existing system, I can only try and error.
From the characters, I have already confirmed if the numbers inside is 0015, I should get 15.
Problem is as you can see above, it contains more than one number, and I have to compare the numbers.
Using SQL Server and C# programming, can some1 guide me on how to retrieve these individual numbers in sql server as well as the data type in C#
In C#, you can directly assign ASCII codes to char. So, for instance,
char c = (char)0x0041;
will assign character repesented by 0x0041, which in this case is 'A', directly to c. You can later convert to string, if necessary, by executing
string s = new string(c);