filling RichTextBox using MemoryStream

melvik · December 2nd, 2004, 08:58 AM

Dear all:
I faced a new problem & asking my old friends was my last source!
I have a [u]RichTextBox </u>wich I wanna fill it using LoafFile method. datasource is a datafield(Content) & an Image type in MS-SQL Server including rtf file folmat's content witch I saved before & now I wanna read it.

Now I fill my dataset & I use following code to read but it gives me an error: [u]"Offset and length were out of bounds for the array or count is greater than the number of elements from index to the end of the source collection."</u>

Code:

Byte[] Txt = (Byte[]) dataSet11.LetterSel.Rows[0]["Content"];
MemoryStream ms = new MemoryStream();
ms.Write(Txt, 0, (int)Txt.Length);
richTextBox1.LoadFile(ms, RichTextBoxStreamType.RichText);
ms.Close();

I'll be so happy if u could help me to solve it cuz I give up

, Tnx in advance.

Always:),
Hovik Melkomian.

Kep · December 2nd, 2004, 08:00 PM

I think all you have to do is return the stream to the start after you've written your data.

Code:

ms.Write(Txt, 0, (int)Txt.Length);
ms.Seek(0, SeekOrigin.Begin);
richTextBox1.LoadFile(ms, RichTextBoxStreamType.RichText);

That should do the trick.

Kep.

melvik · December 4th, 2004, 01:26 AM

Tnx for ur reply dear Kep, but it doenst work, Its just has changed its error message to "Invalid file format." now!

Plz help:(

:(

Always:),
Hovik Melkomian.

melvik · December 4th, 2004, 09:10 AM

actually when I open a .RTF file & push it to a buffer, & display it in RichTextBox is OK, but when I store it in DB & read it from stored Data to show in RichTextBox gives me that error!
my code is lie belove:

Code:

string file = openFileDialog1.FileName;
FileStream stream = new FileStream(file, FileMode.Open, FileAccess.Read);

richTextBox1.LoadFile(stream, RichTextBoxStreamType.RichText);

// Conver & write in Buffer to save in DB as a image datatype
byte[] buffer = new byte[stream.Length];
stream.Read(buffer, 0, (int)stream.Length);
stream.Close();

//Save in DB
DataRow TxtRow;
TxtRow = dataSet11.LetterSel.NewRow();
TxtRow["Number"] = 1;
PicRow["Content"] = buffer;
dataSet11.LetterSel.Rows.Add(TxtRow);
AdapterLetter.Update(dataSet11, "Letter");
buffer = null;

// Read data from DB & Filling data
dataSet11.Letter.Clear();
AdapterLetter.SelectCommand.Parameters["Number"].Value = 1;
AdapterLetter.Fill(dataSet11, "Letter");

// write to buffer as a byte
Byte[] Txt = (Byte[]) dataSet11.Letter.Rows[0]["Content"];
MemoryStream ms = new MemoryStream();
ms.Write(Txt, 0, (int)Txt.Length);
ms.Seek(0, SeekOrigin.Begin);

// show it in richTextBox witch gives error
richTextBox1.LoadFile(ms, RichTextBoxStreamType.RichText);
ms.Close();

any idea?!
Tnx in advance.

Always:),
Hovik Melkomian.

Kep · December 5th, 2004, 07:03 PM

The only thing I can see in your code is the line

Code:

PicRow["Content"] = buffer;

What is PicRow?

I'm not sure if this is an error or a typo or something I don't understand.

Also, what sort of database are you using and what is the data type of "Content"?

Kep.

melvik · December 19th, 2004, 12:39 AM

Ok ppl I solve my problem. Tnx for ur time

Always:),
Hovik Melkomian.

arulrajalivi · December 22nd, 2004, 04:21 PM

It would help others if you post your findings. :-)

Thanks
Arul

Quote:

quote:Originally posted by melvik
Ok ppl I solve my problem. Tnx for ur time

Always:),
Hovik Melkomian.

Nesaver · September 21st, 2007, 09:01 AM

@melvik :

I have the problem, too. Can you post your solution for me ?

Thank you.

melvik · August 30th, 2011, 02:25 AM

Dear all I got messages to tell the solution! as I see in in 2004 just after my post & Then once in 2007, and now in 2011 again.

honestly i havent noticed the messages after my post, but honesty i forgot it. even i dunno what was my problem. oh 7 years...

plz contact me if u reach here and no answer
I'll do my best & would honor to help u