* Nix mono cannot find mysql. Data cocould not be loaded

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Update:

When I first encountered this problem, I thought that the file name is case sensitive due to Unix systems. During this time, I checked Mono'sSource code, Find the source code, more intuitive.

The underlying mono library uses eglibc, which is used to access files. Of course, the UNIX standard library must be case-insensitive.

 

LoadProgramSet:

 

Static monoassembly * real_load (gchar ** search_path, const gchar * culture, const gchar * Name, gboolean refonly) {monoassembly * result = NULL; gchar ** path; gchar * filename; const gchar * local_culture; Gint Len; gboolean is_private = false; If (! Culture | * Culture = '\ 0') {local_culture = "";} else {local_culture = culture;} filename = g_strconcat (name ,". DLL ", null); Len = strlen (filename); For (Path = search_path; * path; Path ++) {If (** Path = '\ 0 ') {is_private = true; continue;/* ignore empty applicationbase */}/* See test cases in bug #58992 and bug #57710 * // * 1st try: [Culture]/[name]. DLL (culture may be empty) */strcpy (filename + len-4 ,". DLL "); If (try_load_from (& result, * path, local_culture," ", filename, refonly, is_private) break;/* 2nd try: [Culture]/cmdname.exe (culture may be empty) */strcpy (filename + len-4 ,". EXE "); If (try_load_from (& result, * path, local_culture," ", filename, refonly, is_private) break;/* 3rd try: [Culture]/[name]/[name]. DLL (culture may be empty) */strcpy (filename + len-4 ,". DLL "); If (try_load_from (& result, * path, local_culture, name, filename, refonly, is_private) break;/* 4th try: [Culture]/[name]/cmdname.exe (culture may be empty) */strcpy (filename + len-4 ,". EXE "); If (try_load_from (& result, * path, local_culture, name, filename, refonly, is_private) break;} g_free (filename); return result ;}

File judgment:

 

 

 
Gbooleang_file_test (const gchar * filename, gfiletest test) {struct stat st; gboolean have_stat; If (filename = NULL | test = 0) return false; have_stat = false; if (Test & g_file_test_exists )! = 0) {If (access (filename, f_ OK) = 0) return true;} If (Test & g_file_test_is_executable )! = 0) {If (access (filename, x_ OK) = 0) return true;} If (Test & g_file_test_is_symlink )! = 0) {have_stat = (lstat (filename, & St) = 0); If (have_stat & s_islnk (St. st_mode) return true;} If (Test & g_file_test_is_regular )! = 0) {If (! Have_stat) have_stat = (STAT (filename, & St) = 0); If (have_stat & s_isreg (St. st_mode) return true;} If (Test & g_file_test_is_dir )! = 0) {If (! Have_stat) have_stat = (STAT (filename, & St) = 0); If (have_stat & s_isdir (St. st_mode) return true;} return false ;}
 

 

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Today, I tried to use mono to access MySql in Linux.

Ado. Net driver for MySQL (http://www.mysql.com/downloads/connector/net/) is officially provided. Something is simple, a few DLL files, and a msdn style CHM document file.

 

There is always a problem when running the program. The prompt is:

The following Assembly referenced from test.exe cocould not be loaded:
Assembly: mysql. Data (assemblyref_index = 1)
Version: 6.2.3.0
Public Key: c5687fc88969c44d

The Assembly was not found in the Global Assembly Cache, a path listed in the mono_path environment variable, or in the location of the executing assembly

 

However, I have already added references, and the official MySQL is in the directory. data. DLL. I tried it several times, so I guess it is not a clear file, because the file name in * nix is case sensitive.Changed to MySQL. Data. dll..

 

I don't know what the problem is. Check Mono'sCodeHow should it be his problem.