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Re: Need to restric Base Method on Derive and Access on Other Namespace hierarchy class.

12-Feb-09 6:00

maybe use the sealed keyword, im not sure thou

no, dont think so lol... try 'explicit' keyword instead

If only MySelf.Visible was more than just a getter...

A person can produce over 5 times there own body weight in excrement each year... please re-read your questions before posting

DaveyM6912-Feb-09 6:19

DaveyM69

12-Feb-09 6:19

explicit is for overloading conversion operators.

Dave
BTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)
Visual Basic is not used by normal people so we're not covering it here. (Uncyclopedia)

Re: Need to restric Base Method on Derive and Access on Other Namespace hierarchy class.

Tarini Singh12-Feb-09 23:26

Tarini Singh

12-Feb-09 23:26

No, Not Fulfill the functionality.

Re: Need to restric Base Method on Derive and Access on Other Namespace hierarchy class.

DaveyM6912-Feb-09 6:18

DaveyM69

12-Feb-09 6:18

Not sure you can.

The best I can think of is to mark D's M as internal new, that way it won't be visible outside that particular assembly but B's M will.

Dave
BTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)
Visual Basic is not used by normal people so we're not covering it here. (Uncyclopedia)

Re: Need to restric Base Method on Derive and Access on Other Namespace hierarchy class.

ABitSmart12-Feb-09 15:34

ABitSmart

12-Feb-09 15:34

One way I can see doing this is by adding a level of hierarchy,

Base Class B //Not having Method M, but all others

Derived Class B_With_M //Deriving from B but and having Method M (as protected to restrict it to only derived class)

Derived Class D //Deriving from B, this will be your class with Base as B(through hierarchy) and not having M.

All other classes whom you want to give access to M will derive from B_With_M and not from B.

problem with é, à, è

abbd12-Feb-09 5:39

12-Feb-09 5:39

Hello,
when reading a text file, the letters having accents, they appear square caps in a message box, how can we keep the same letters? thank you verry much.

Re: problem with é, à, è

musefan12-Feb-09 5:46

Re: problem with é, à, è [modified]

12-Feb-09 5:46

its down to the encoding of the text, as far as i know you cant change that with the message box directly but maybe it can be set in the system

If only MySelf.Visible was more than just a getter...

A person can produce over 5 times there own body weight in excrement each year... please re-read your questions before posting

Luc Pattyn12-Feb-09 5:47

Luc Pattyn

12-Feb-09 5:47

Hi,

Most probably the MessageBox is not at fault, the way you read your file is.

each text file uses some way to identify characters that are outside the regular ASCII character set
(which is less than 128 chars). You either use a "code page" telling what the byte values [128,255]
represent, or some more elaborate scheme such as UTF8 or Unicode, to get access to a much larger
character set where some or all characters use 2 bytes.

UTF8 and Unicode files start with a special byte sequence to identify them. When no byte sequence
is present, your best guess may be to use the code page that suits your locale; I typically use
new Encoding(1252) yielding a West-European code page.

So when reading a text file, you should apply the right "encoding" and pass that to your
input methods, e.g. File.ReadAllText Method (String, Encoding)

Smile | :)

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modified on Sunday, June 12, 2011 8:00 AM

Can we know the extention of code base 64 digits??

abbd12-Feb-09 5:21

Re: Can we know the extention of code base 64 digits??

12-Feb-09 5:21

Hello,

i encode the word file using this code :

Convert.ToBase64String(data),

but when i decode the code 64digits, we mus add an extention like .doc, can we know the extention of code base 64 digits? thank you verry mutch.

musefan12-Feb-09 5:25

Re: Can we know the extention of code base 64 digits??

12-Feb-09 5:25

if it is a data file i think you would need to check the file header information and determine the filetype from that then choose you extension, this however would mean you need to have a list of file associations for different filetypes. You best option might be to store the extension somewhere before conversion if that is posible?

If only MySelf.Visible was more than just a getter...

A person can produce over 5 times there own body weight in excrement each year... please re-read your questions before posting

Rob Philpott12-Feb-09 5:33

Rob Philpott

12-Feb-09 5:33

If I understand correctly, then no you can't. Encoding a word file (or any file) for that matter to base64 just stores the raw data of the file, not the name or extension or file data.

Regards,
Rob Philpott.

Re: Can we know the extention of code base 64 digits??

abbd12-Feb-09 5:36

Re: Can we know the extention of code base 64 digits?? [modified]

12-Feb-09 5:36

so we can't get the extension of the original file?? i don't like save the extension elonely in another filed, thank you verry mutch

Luc Pattyn12-Feb-09 5:42

Luc Pattyn

12-Feb-09 5:42

Hi,

if you are creating an app that does Base64 file conversion, you have several options:
1. you could generate a file that has the original filename and append "64" to the extension;
2. you could generate a file that holds at least two strings, the first being the filename+extension,
the next one being the base64-encoded data.

BTW: I hope you are not reading all the data first, then turning that into a single (possibly huge) string. If you were to do so, a large word document (one that Word your barely manages to open on
your system) would not fit in your conversion app since that would have to hold both the original
and the converted data (which is 33% larger in size). The right way is to have a loop reading
say 64KB of data and outputting that in base64, then repeat until all is done.

[ADDED]
if you are storing binary file data in a database, I suggest you use two fields, one for the
filename, one for the data.
[/ADDED]

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

modified on Thursday, February 12, 2009 11:49 AM

modified on Sunday, June 12, 2011 8:01 AM

range.InsertAfter()

abbd12-Feb-09 5:02

Searching on Sharepoint Document Columns

12-Feb-09 5:02

Hello,

i find an exemple to generate a word file, so i don't understand this code,

for (int i = 1; i <= Doc.Bookmarks.Count; i++)<br />
                            {<br />
                                object index = i;<br />
                                Microsoft.Office.Interop.Word.Bookmark bk = Doc.Bookmarks.get_Item(ref index);<br />
                                Bks.Add(bk.Name, bk.Range);<br />
                            }<br />
                            <br />
                            ((Microsoft.Office.Interop.Word.Range)Bks[s]).InsertAfter(????);

in the model of my word file, it's name is MODEL.dot, they are thie sentence "test", but when i make this

((Microsoft.Office.Interop.Word.Range)Bks[s]).InsertAfter("test");, there are an exception :
Object reference not set to an instance of an object.

Thank you verry mutch.

rkajal12-Feb-09 4:54

rkajal

12-Feb-09 4:54

Hi,

I have added a category column to my Sharepoint document store. I want to create a web application that will allow users to search for documents based on the value of this category.

I have looked at the various articles here at CodeProject and I can't see anything that suits.

Can someone point me in the direction of how to achieve this in C#/ASP.NET?

Thanks Smile | :)

Re: Searching on Sharepoint Document Columns

Calin Tatar12-Feb-09 5:36

EvaluateException at Select-Funktion

12-Feb-09 5:36

you may use the lists.asmx (webservice) from your sharepoint website.
Something like: in this article[^]
Also, you may use something like list.Attributes["CATEGORY_COLUMN"].Value to get the value for your custom column.

Calin

der.flori12-Feb-09 4:32

der.flori

12-Feb-09 4:32

Hi,
I´d like to select DataRows with an Id and a Date, but I always get the following Error-Message:

Cannot perform '=' operation on System.DateTime and System.String.

Here my Code:

string BehID = data1.Behandlungen.Rows.Count.ToString();
string datum = microsim1["picdate"].ToString();
DataRow[] VerlaufDatum = data1.Verlauf.Select("BehandlungsID=" + BehID + " AND Datum= '" + datum + "'");

It worked perfectly witch Visual Studio 2003, but with Visual Studio 2008 I always get this Exception Frown | :(

thanks for your help.

musefan12-Feb-09 4:58

12-Feb-09 4:58

im suprised it worked in any version

youor trying to compare a string to a dateTime which clearly is not the same type

As the BehID is unique why use the datum value at all?

If only MySelf.Visible was more than just a getter...

A person can produce over 5 times there own body weight in excrement each year... please re-read your questions before posting

Calin Tatar12-Feb-09 5:02

12-Feb-09 5:02

Hi,

Try to create a DateTime object from

datum

, to see if you have a valid data format in that string.

Calin

der.flori12-Feb-09 5:06

der.flori

12-Feb-09 5:06

I already tried to create a DateTime Object from

datum

and the Cast worked perfectly, but there occurs the same Exception when I edit the Code as follows:

DataRow[] VerlaufDatum = data1.Verlauf.Select("BehandlungsID=" + BehID + " AND Datum= '" + Convert.ToDateTime(datum) + "'");

I think it has something to do with the '=' Operator, but I don´t know what´s wrong with it Frown | :(

Calin Tatar12-Feb-09 5:08

12-Feb-09 5:08

Try by formatting the date and pass this string:
"#" + dt.Month + "/" + dt.Day + "/" + dt.Year + "#"

Calin

Lodeclaw12-Feb-09 5:04

Lodeclaw

12-Feb-09 5:04

You need to convert one or both sides of your statement so that they are both the same data type. A string type and a datetime type are incompatible, so find a way to collect the datetime information contained in your string explicitly and use DateTime.Parse to make it compatible.

Calin Tatar12-Feb-09 5:06

12-Feb-09 5:06

Also, you should try to format your date as following:
"#" + dt.Month + "/" + dt.Day + "/" + dt.Year + "#"

Calin