String variable has no closing quote - why?

[Sypher2]

I am currently reading information from a binary file. Whenever I do a ReadChars on the binary reader, I do not get a closing quote.

For example (br is the instantiated BinaryReader):

Dim tData1 As Int32 = br.ReadInt32 [COLOR=green]'Works[/color]
Dim tData2 As String = br.ReadChars(15) [COLOR=green]'Get 15 characters[/color]

tData1 will hold correct data.
tData2 will have something like "Example

There is no closing quote to the variable. This is very strange and causes problems later on when I try to see if this variable is equal to something else. It will always fail... "Example" <> "Example

Anyone know what's going on here?

Thanks

 

[ThatRickGuy]

What is the text the br is reading?

is it:

12343254"Example"

or

12343254Example

-Rick

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[Sypher2]

It is:

12343254Example

 

[ThatRickGuy]

so if you have:

Dim tData2 As String = br.ReadChars(15) 'Get 15 characters
debug.writeline(tDate2)

the debug window shows:

"Example

???

-Rick

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I believe in killer coding ninja monkeys.

 

[Sypher2]

No the debug window shows:

Example

However if I hover the mouse over the variable I get:

"Example

Then when I look at the debug window after closing the app it shows:

ExampleThe program '[blah blah]' has exited with code 0 (0x0).

Even with writeline it's not doing a CRLF. Maybe I need to add that to the end of the string?

 

[ThatRickGuy]

What comes after Example in the byte stream?

-Rick

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[Sypher2]

There are several parts where I use ReadChars. Sometimes it's Int16 afterward. Sometimes Int32. Sometimes another ReadChars.

 

[ThatRickGuy]

Is it always 15 characters? You aren't by chance trying to read 1 too many characters and winding up with a strange byte in there?

You could also try iterrating through the char array that you read in to populate a string builder.

-Rick

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[Sypher2]

Yes, I tried iterating through the char array and make a string builder. That worked and I insert it into a database, but then when I read the data back from the database from a different application, I get the same result.

When I do a DataReader.GetString, it shows "Example when I hover the mouse over the variable.

 

[ThatRickGuy]

Stick a break point on the iteration. See what the last character is. I'm wondering if it isn't a string terminator or something of the like.

-Rick

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[Sypher2]

It's ASCII code 0 (zero) which is a null.

Even though it is 15 characters, there may fewer than that with any real character in it.

I've resorted to iterating over the char array when inserting into the DB and also interating over the char array when reading back from the DB.

 

[ThatRickGuy]

On your iteration reading the char array into a string, try exiting the loop if you hit a null character.

-Rick

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