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FileInfo.GetFiles() and special characters (accents)

When I insert in DB a string that contains special character as a "à" or a "é" from a FileInfo.GetFiles() item, I get issues and SQL save splitted special char. Non-special chars are OK.
For instance, "à" becomes "a`", and "é" becomes "e´". Did anyone get this kind of trouble?
Here is the code
DirectoryInfo di = new DirectoryInfo(path);
foreach (FileInfo fi in di.GetFiles())
{
Logger.LogInfo("Info: " + fi.Name);
}
Basically, if string is "sàrl", log saved "Info: sa`rl"
When I breakpoint trough VS, I see the string with "à" but when I log it, char are splitted.
My SQL collation is Latin CI AS (SQL_Latin1_General_CP1_CI_AS) and DB already host string with special char without problem.
Thanks folks
EDIT
I have trouble when I insert the fi.Name into the final table too:
public bool InsertFile(string fileName, Societe company, string remark, PersonnelAM creator)
{
string commandText = (#"INSERT INTO [dbo].[TB_DOCSOCIETE_COM] " +
"([IdtSOC] " +
",[NomDOC] " +
",[RemDOC] " +
",[DateDOC] " +
",[IdtPER]) " +
"VALUES " +
"(#company" +
",#fileName" +
",#remark" +
",#date" +
",#creator) SELECT ##IDENTITY");
var identity = CreateCommand(commandText,
new SqlParameter("#fileName", DAOHelper.HandleNullValueAndMinDateTime<string>(fileName)),
new SqlParameter("#company", DAOHelper.HandleNullValueAndMinDateTime<int>(company.Id)),
new SqlParameter("#remark", DAOHelper.HandleNullValueAndMinDateTime<string>(remark)),
new SqlParameter("#date", DAOHelper.HandleNullValueAndMinDateTime<DateTime>(DateTime.Now)),
new SqlParameter("#creator", DAOHelper.HandleNullValueAndMinDateTime<int>(creator.id))
).ExecuteScalar();
return int.Parse(identity.ToString()) > 0;
}
I'm using NLog so data is varchar(8000) for message column and code that logs message is
public static bool LogInfo(Exception ex, string message = "")
{
try
{
GetLogger().Log(LogLevel.Info, ex, message);
}
#pragma warning disable 0168
catch (Exception exception)
#pragma warning restore 0168
{
return false;
}
return true;
}
EDIT 2 :
To be clear about DB, those 3 lines:
Logger.LogInfo("BL1 " + "sàrl is right saved");
Logger.LogInfo("BL2 " + fi.Name + " is not right saved");
Logger.LogInfo("BL3 " + "sàrl" + " - " + fi.Name + " is not right too!");
Gave me that result in DB:
BL1 sàrl is right saved
BL2 ENTERPRISE Sa`rl - file.pdf is not right saved
BL3 sàrl - ENTERPRISE Sa`rl - file.pdf is not right too!
So it doesn't come from DB, it is an issue about the string (encoding?)

varchar(8000)
Make the column NVARCHAR. This is not a collation issue. Collations determine the sort order and comparison rules, not the storage. Is true that for non-unicode columns (varchar) the collation is used as hint to determine the code page of the result. But code page will only get you so far, as obviously a 1 byte encoding code page cannot match the entire space of the file system naming, which is 2 bytes encoding Unicode based.
Use an Unicode column: NVARCHAR.
If you want to understand what are you experiencing, just run this:
declare #a nvarchar(4000) = NCHAR(0x00E0) + N'a' + NCHAR(0x0300)
select #a, cast(#a as varchar);
Unicode is full of wonderful surprises, like Combining characters. You can't distinguish them visually, but they sure show up when you look at the actual encoded bytes.

Put Quote Mark in between 2 string objects

I have looked and looked and look for a way to put a " in between 2 string objects.
I know you can use "\"" to get a quote or even #"""" for the same result.
string quote = "\"";
string cheatName = "UnlockTankLine(" + nationNum.ToString() + "," + quote +
nationTankName[1] + quote + ")";
m_cheater.ActivateCheat(cheatName);
I need a result of "UnlockTankLine(int, "name")"... but when i do the above i get something like
"UnlockTankLine(int, \"name\")" and this isn't working with a cmd line for our game.
NOW if i am dumb and \"name\" is the same thing as "name" and the problem might be somewhere else. The only reason why I think i am not being dumb is if i use a different cheat cmd that doesn't take a string it works fine. Example UnlockWholeTankLine(int) works

try
to use format
string cheatName = string.Format("UnlockTankLine({0},\"{1}\")",
nationNum.ToString(), nationTankName[1])

MySQL leading whitespace with C#

When I update a field in my MySQL database, it always adds a whitespace to the value.
I tried to remove the whitespace with the trim-command and the replace-command. Neither of them worked. So I expect that it isn't a whitespace but some vague ASCII character. These are the commands I used:
this.foo = result.GetValue(0).ToString().Trim();
this.bar = result.GetValue(0).ToString().Replace(" ","");
The field it updates is a VARCHAR(xx). This is my MySQL update command:
MySqlCommand cmd = new MySqlCommand("UPDATE " + table + " SET " + new_field + " =' " + new_value+ "' WHERE " + field+ "= " + value + "",this.con);
this.con is my connection to the MySQL database.
FYI: I use .NET 3.5CF with a mysql.data.cf DLL in Visual Studio 2008.
Could someone help me out with this problem? It's driving me nuts.

Well yes, you've got a leading space in the SQL:
"UPDATE " + table + " SET " + new_field + " =' " + new_value+ "'
Note the bit straight after "=" - you've got a quote, then a space, then new_value.
However, you shouldn't be putting the values in the SQL directly in the first place - you should be using parameterized SQL statements... currently you've got a SQL injection attack waiting to happen, as well as potential problems for honest values with quotes in.
You should use parameterized SQL for both new_value and value here... I'm assuming that field and table come from more "trusted" sources?

This appears to have a space where the * is
" ='*" + new_value

Weird issue with casting substring to integer

I'm getting a weird issue with substringing. Apparently the string I get can't be cast into an Int32 for some odd reason. The error message I get when I try doing that is "input string is not in correct format". Because of this, I can't insert these values into the Database either.
Here's the code...
string width = GetMetadata(filename, 162); //returns "1280 pixels"
string height = GetMetadata(filename, 164); //returns "700 pixels"
width = width.Substring(0, width.IndexOf(' ')); //returns "1280"
height = height.Substring(0, height.IndexOf(' ')); //returns "700"
//test: "System.Convert.ToInt32(width)" will fail, giving error "input string was not in correct format"
//doing the above on "width" yields the same result
//fails, giving error "no such column: 1280" (underlying database is sqlite)
Database.NonQuery("INSERT INTO image VALUES (" + fileid + ", " + width + ", " + height + ")");

For all the normal reasons - primarily avoiding leaving data conversions to the database, and preventing SQL injection attacks - I would suggest that you perform the parsing to a number in C#, and then use a parameterized query to talk to SQLite.
In this case, that will make it a lot easier to debug - either .NET will fail to parse the string as well (in which case it's likely to be a problem with your data) or it will work, and you won't need to worry about what conversions database was performing.
EDIT: I've just seen your comment saying that Convert.ToInt32 fails as well. That's a pretty clear indication that it's the data which is causing a problem.
I'd expect your code to look something like this:
string widthText = GetMetadata(filename, 162);
string heightText = GetMetadata(filename, 164);
widthText = width.Substring(0, width.IndexOf(' ')).Trim();
heightText = height.Substring(0, height.IndexOf(' ')).Trim();
int width = int.Parse(widthText, CulutureInfo.InvariantCulture);
int height = int.Parse(widthText, CulutureInfo.InvariantCulture);
using (SQLiteCommand cmd = Database.CreateCommand())
{
cmd.CommandText = "INSERT INTO image VALUES (?, ?, ?)";
cmd.Parameters.Add(fileid);
cmd.Parameters.Add(width);
cmd.Parameters.Add(height);
cmd.ExecuteNonQuery();
}
Note that the Trim call will remove any leading spaces, which it seems was the cause of the problem.

There may be some stray whitespaces in the string variables width and height. Invoke Trim() method on the strings before casting them into integers:
width = width.Trim();
height = height.Trim();
Hope this helps. Let us know.

String concatenation doesn't seem to work in C#

I don't know what is wrong with the following string:
"Report(" + System.DateTime.Now.ToString("dd-MMM-yyyy") + " to " + System.DateTime.Now.AddMonths(-1).ToString("dd-MMM-yyyy") + ")"
I can't get the concatenated string. I am getting Report(29-Dec-2009. That's all and
the rest gets left out from the string.
What is the reason?

Try this:
string filename =
String.Format(
"Report({0:dd-MMM-yyyy} to {1:dd-MMM-yyyy})",
System.DateTime.Now, System.DateTime.Now.AddMonths(-1));
EDIT: Since in your download box you got your filename broken in first whitespace, you could to try ONE of these:
filename = HttpUtility.UrlEncode(filename); // OR
filename = """" + filename + """";
Seems some browsers doesn't handles whitespaces very nicely: Filenames with spaces are truncated upon download. Please check it you can to download other filenames with whitespace in other sites.

You need to assign it to something:
string s = "Report(" + System.DateTime.Now.ToString("dd-MMM-yyyy") + " to " + System.DateTime.Now.AddMonths(-1).ToString("dd-MMM-yyyy") + ")"
Update: I just saw your update to the question. How are you displaying the string? I'm guessing that you are displaying it in a GUI and the label is too short to display the complete text.

Try this:
string newstring =
string.Format(
"Report ({0} to {1})",
System.DateTime.Now.ToString("dd-MMM-yyyy"),
System.DateTime.Now.AddMonths(-1).ToString("dd-MMM-yyyy")
);

What are you assigning the result to? It would be easier to read the code if you used string.Format

You are not assigning the concatenated result to anything, so can't use it:
string myConcatenated = "Report(" + System.DateTime.Now.ToString("dd-MMM-yyyy") + ")";

Using this code...
string test = "Report(" + System.DateTime.Now.ToString("dd-MMM-yyyy") + " to " +
System.DateTime.Now.AddMonths(-1).ToString("dd-MMM-yyyy") + ")";
I saw the following result.
Report(29-Dec-2009 to 29-Nov-2009)
It could be that the string is being truncated later on. Make sure that you set a breakpoint right after this code is run and check the value of the variable to which it is assigned (test in my case).

If, as in your previous question, you are using this value to create a file, it may be that it's the space before "to" that is causing the problem. Try to use:
"Report("
+ System.DateTime.Now.ToString("dd-MMM-yyyy")
+ "To"
+ System.DateTime.Now.AddMonths(-1).ToString("dd-MMM-yyyy")
+ ")"
instead and see if that fixes it.
If that does fix it, you'll probably need to either figure out how to quote the entire file name so it's not treated as the three separate arguments, "Report(29-Dec-2009", "to" and "29-Nov-2009)". Or simply leave your reports names without spaces.
I'd choose the latter but then I'm fundamentally opposed to spaces in filenames - they make simple scripts so much harder to write :-)