C# Discussion Boards - CodeProject

Re: Write a save repport on txt file

4-Jul-09 8:39

abbd wrote:
So the line witch write deleted on every execution of my program, how i can add a lines?

You are opening a stream and writing from the start. You need to open the stream and write at the end.

You might find this article in MSDN on How to Open and Append to a ... file[^] useful.

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Anthony Mushrow4-Jul-09 8:44

Anthony Mushrow

4-Jul-09 8:44

You will need to get the FileStream yourself and make sure the stream is at the end of the file. You can then pass that to the StreamWriter, and it will add text on, rather than overwriting it.

Pretty simple:

//This should open the file (if it exists) and then seek to the end if the file.
//You should check out the other options for FileMode as well
FileStream fs = new FileStream(path + ":\\Batch_BDD_PROD\\nb\\TXT.txt", FileMode.Append);
StreamWriter monStreamWriter = new StreamWriter(fs);

try
{
monStreamWriter.WriteLine("Ma toute2 première ligne ..."); 
}
finally
{
monStreamWriter.Close();
}

EDIT: Beaten again! Must type faster!

My current favourite word is: Delicious!

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Drag & Drop problem

ADRENALIN20064-Jul-09 7:27

ADRENALIN2006

4-Jul-09 7:27

I have problem in C# when I want to drop text on my textbox. If I drag tet form notepad it work ok, but if that text is html link I end up with link to the page, not link caption, withc I want.

I use thise
string tmp = (string)e.Data.GetData(DataFormats.Text);

How can I know what type of object is over control, if it is link from browser what should I do. I saw html type and I could parse it but my problem is how to know that object is link, and not a plain text.

Did I make myself clear?

Re: Drag & Drop problem

Luc Pattyn4-Jul-09 8:21

Luc Pattyn

4-Jul-09 8:21

Hi,

not sure I understand you correctly. You are dragging some text, which might be a URL? and if so, you want the content of that page rather than its URL?

If that is what you want, then you have to write code to that effect. Check the text starts with "http" and when it does, use WebRequest/WebResponse to get the content. If it fails, drop the URL; if it succeeds, drop the content (which could well be a lot of HTML mumbo jumbo, or an image, or just almost anything).

Smile | :)

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Re: Drag & Drop problem

ADRENALIN20065-Jul-09 5:09

ADRENALIN2006

5-Jul-09 5:09

Sory on bad formating. That is exactly what I want. So there is no automatical way to do that, i must to parse. There is html format witch i can parse, beter then using browser, but i was hope that there is easyer way to do this.

Thenks alot.

Splitting string in blocks of 16

GauravKP4-Jul-09 2:37

GauravKP

4-Jul-09 2:37

I need code in C# to split a string in blocks of 16.
plz suggest me a code.....

Re: Splitting string in blocks of 16

Colin Angus Mackay4-Jul-09 2:45

DataGrid showing multiple columns in C# 2003 [modified]

4-Jul-09 2:45

You can look at something like Substring[^]

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Viper-Eyes4-Jul-09 2:08

Viper-Eyes

4-Jul-09 2:08

Hello Guys :

i really in a deep trouble an tried many way to solve it but couldn't find a solution.

1st am getting my data from xml file....when my application load the dataset reads the data from the xml file.

in the xml file i have two tables : (Product) and (ProductInfo)

tables product consist of (ID"Pk",Type).
and productInfo consist of (ID,Description,Brand,PructType"Fk").

there is a relation between those two tables.

now the problem is i want to show the table (ProductInfo) in the Daragrid but get the type from the Product Table.in other words i want to show coulmns from multiple tables in 1 Datagrid and in 1 view through the relation.i mean i want the Datagrid to view (ID,Description,Brand,Type)
the first 3 from ProductInfoTable an the last one from the Product table.

to be exact i want to do something like the "JOIN" function in SQL Server.

i did that before but i was using SQL Server Database and made View and selected teh coulmns i needed from different tables and the view were like another new table but with the two tables data....and i selected the datasource infor my datagrid that View and with table styles i hid what i wanted to hid.but even now tablestyles not working.....any help or idea will be apprciated.

modified on Saturday, July 4, 2009 8:21 AM

Http Header code (example 200,404,..)

Nafiseh Salmani3-Jul-09 22:33

Nafiseh Salmani

3-Jul-09 22:33

I want to determine HTTP header code of a URL by C# code. How could I get that?

I use the following code :

<br />
public Dictionary<string, string> GetHTTPResponseHeaders(string Url)<br />
        {<br />
            Dictionary<string, string> HeaderList = new Dictionary<string, string>();<br />
<br />
            WebRequest WebRequestObject = HttpWebRequest.Create(Url);<br />
            WebResponse ResponseObject = WebRequestObject.GetResponse();<br />
<br />
            foreach (string HeaderKey in ResponseObject.Headers)<br />
            {<br />
                HeaderList.Add(HeaderKey, ResponseObject.Headers[HeaderKey]);<br />
                textBox1.Text += HeaderKey + ": " + ResponseObject.Headers[HeaderKey]+"      " ;<br />
            }<br />
            ResponseObject.Close();<br />
<br />
            return HeaderList;<br />
}<br />

but It does not contain of HTTP header Code!

Colin Angus Mackay4-Jul-09 1:08

4-Jul-09 1:08

Nafiseh Salmani wrote:
WebResponse ResponseObject = WebRequestObject.GetResponse();

This should be cast to an HttpWebResponse if the Url you are passing uses HTTP or HTPS as the protocol.

HttpWebResponse responseObject = (HttpWebResponse)WebRequestObject.GetResponse();

You will then find a StatusCode property which contains the detail you want.

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Blog: Can Open... Worms? Everywhere!
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Nafiseh Salmani4-Jul-09 1:36

Nafiseh Salmani

4-Jul-09 1:36

Thanks! But it just determine "OK" not the code!! I need the code number exactly!!

How could I get code number?!!!!

Henry Minute4-Jul-09 1:46

Henry Minute

4-Jul-09 1:46

Read the documentation!! here[^]

StatusCode is an enumeration, 'OK' = 200. Just write yourself a method to return a string of the numbers based on the value of StatusCode.

Henry Minute

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Colin Angus Mackay4-Jul-09 2:18

4-Jul-09 2:18

Henry Minute wrote:
Read the documentation!! here[^]

Documentation has a use? I thought it was just a jolly for technical writers to get paid to do something no one reads! Wow! Didn't I learn something today. Roll eyes | :rolleyes:

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Blog: Can Open... Worms? Everywhere!
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Henry Minute4-Jul-09 3:28

Henry Minute

4-Jul-09 3:28

Of course, I don't use it myself...... Big Grin | :-D

Nafiseh Salmani4-Jul-09 4:17

Nafiseh Salmani

4-Jul-09 4:17

Thanks alot of both of you!! Smile | :)

I would try to read documentation carefully before asking something like this. WTF | :WTF:

Get Error Number in C#

Anubhava Dimri3-Jul-09 22:19

Anubhava Dimri

3-Jul-09 22:19

Hi All,
How can i get the error number in c#.

If you can think then I Can.

DaveyM693-Jul-09 22:37

DaveyM69

3-Jul-09 22:37

Error number of what?

Anubhava Dimri4-Jul-09 1:33

Anubhava Dimri

4-Jul-09 1:33

IN VB WE CAN CHECK ERROR NO. BY USING

ON ERROR GOTO ERR
ERR:
MSGBOX (ERR.NUMBER)

NOW HOW CAN IT POSSIBLE IN C#

If you can think then I Can.

Colin Angus Mackay4-Jul-09 2:31

4-Jul-09 2:31

STOP SHOUTING - It is rude!

User group: Scottish Developers
Blog: Can Open... Worms? Everywhere!
Quote: Man who stand on hill with mouth open wait long time for roast duck to drop in.

Anubhava Dimri4-Jul-09 2:37

Anubhava Dimri

4-Jul-09 2:37

ok colin

If you can think then I Can.