Re: Converting Image to Object - C# Discussion Boards

Guffa23-Oct-07 3:01

Guffa

23-Oct-07 3:01

sindhutiwari wrote:
thanks for the code

I didn't provide any code.

sindhutiwari wrote:
at run time a error is thrown saying
""'"Data type mismatch in criteria expression."'''"

That is an error message from the database that tells you that your SQL query is invalid.

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Pete O'Hanlon23-Oct-07 2:03

23-Oct-07 2:03

This should get you started:

private byte[] ConvertImage(Bitmap image, ImageFormat format)
{
  if (image == null)
    throw new ArgumentNullException("image");
  using (MemoryStream ms = new MemoryStream())
  {
    image.Save(ms, format);
    return ms.ToArray();
  }
}

The ImageFormat parameter just tells you what format the image is that you want to save, e.g. Jpeg or Png.

Deja View - the feeling that you've seen this post before.

sindhutiwari23-Oct-07 2:19

sindhutiwari

23-Oct-07 2:19

thanks for the code but at run time a error is thrown saying
""'"Data type mismatch in criteria expression."'''"
if u have any idea abt this error please let me know
regards
sindhu tiwari

its me sid

Pete O'Hanlon23-Oct-07 2:26

23-Oct-07 2:26

Use the debugger, step through the code and see where the exception is thrown.

Deja View - the feeling that you've seen this post before.

sindhutiwari23-Oct-07 2:30

sindhutiwari

23-Oct-07 2:30

i dont have any idea abt the debugger step if u dont mind plz tell me

its me sid

Pete O'Hanlon23-Oct-07 2:34

23-Oct-07 2:34

sindhutiwari wrote:
i dont have any idea abt the debugger step if u dont mind plz tell me

How can you be coding without knowing how to debug? There's a honking great menu in Visual Studio called Debug. Have a look at what it offers you.

Deja View - the feeling that you've seen this post before.

Outlook add in is not loading in client machine

sindhutiwari23-Oct-07 2:50

sindhutiwari

23-Oct-07 2:50

no problem in that.................

its me sid

pritesh_patel23-Oct-07 1:28

pritesh_patel

23-Oct-07 1:28

My outlook add in is not loading in PC other than development PC.I tried all above points but still didn't succeed

1) Load behaviour is remain 3 after open outlook

2) In CAS add in has full trust rights

3) There is no error while opening outlook from commnad prompt after execute command set VSTO_SUPPRESSDISPLAYALERTS=0

All points that casue of error are OK but still not working

Please help me

Pritesh Patel

treeview nodes from sql server

NewToAspDotNet23-Oct-07 0:34

NewToAspDotNet

23-Oct-07 0:34

Hi everyone,
i have a treeview and a sqlserver table called companies. with company id, name, adress, and departments. I have the following code to set the company names in the treeviewnodes:

foreach (DataRow mydr in Sql.mydt.Rows)
{
treeView1.Nodes.Add(new TreeNode(mydr["Dep_comp_name"].ToString()));
}

now how can i set the departments(belonged to the company names) as childnodes to the companyname nodes ?
thanx.

pmarfleet23-Oct-07 1:08

pmarfleet

23-Oct-07 1:08

Retain a reference to each TreeNode object that represents a company after it is created. Call the Nodes.Add method of that object for every department in the company.

Paul Marfleet

NewToAspDotNet23-Oct-07 1:54

NewToAspDotNet

23-Oct-07 1:54

hi paul marfleet,
thanx for your response. i m very new in c# and i still don't understnad how to do that. cause one company can have more departments, how can i get those departments and set it to the node of the right company? Can u give me some code?

pmarfleet23-Oct-07 2:12

pmarfleet

23-Oct-07 2:12

I'm not going to do your (home)work for you. If you want to learn C# or programming as a general discipline, you need to practice solving problems. Since my first post, you haven't demonstrated that you have made any further effort to solve the problem yourself.

I will give you some further pointers though.

1. Fetch your data in a fashion that allows you to easily iterate through i) companies ii) departments within companies
2. When iterating through companies, use a nested loop to iterate through the departments for a company.
3. Retain a reference to each company treenode you add to the tree in an object variable. Add your department nodes as children to each company treenode when iterating through departments for a company.

Paul Marfleet

Pete O'Hanlon23-Oct-07 2:08

23-Oct-07 2:08

As an example:

foreach (DataRow mydr in Sql.mydt.Rows)
{
  TreeNode parent = new TreeNode(mydr["Dep_comp_name"].ToString());
  // Get the data for the child somehow..
  parent.Nodes.Add(new TreeNode(mychilddr[...].ToString()));
  treeView1.Nodes.Add(parent);
}

This is an inefficient approach, but until you become more proficient it should help you. The important thing is that you will have to get the child rows from the database somehow, and add them to the Nodes collection of the company tree node.

Deja View - the feeling that you've seen this post before.

Re: Dynamic Textbox controll

NewToAspDotNet23-Oct-07 2:17

NewToAspDotNet

23-Oct-07 2:17

Pete O'Hanlon,
Thank you, geat help. this helped me a lot.

Using resource

alexia_teh23-Oct-07 0:03

alexia_teh

23-Oct-07 0:03

I have a web application written using C# (visual studio 2002) which including the use of resource (only string data) but when I tried to edit the data displayed on the web page in the resource created...it makes no changes to the page when I refreshed it (or even after clearing the cache,etc). May I know how actually I can change the data so that it will reflect the changes to my web page as well? Please HELP...

Thanks in advance!

Alexia

Re: Using resource

kenprog23-Oct-07 15:15

kenprog

23-Oct-07 15:15

I used a text file and just included the text file inside the web page by using
<br>
inside the HTML code

Your resource shouldnt really matter as long as the page can access it. Check your resource and make sure it is updated properly (before the page reads it) and that all permissions are set correctly. The page will have to be refreshed too.

Hope this helps

I love programming!

Dynamic Textbox controll

pashitech23-Oct-07 0:01

pashitech

23-Oct-07 0:01

Hi all,
I am developing a smartclient(mobile)Application.,
Here I need to make a textbox to behave in such a way that it should grow horizantally to the end of form from its normal sizeto nextline and so, once the cursor reaches the end.
I have taken normal textbox and made the workwrap to false...But I couldn't able to make the textbox to grow horzantally
Thanks,
Prashanth

sujithkumarsl23-Oct-07 1:58

sujithkumarsl

23-Oct-07 1:58

heii for this u need t change the property of text box according to the text entering into it... Smile | :)

My small attempt...

Panel scrolling

blackjack215022-Oct-07 23:58

blackjack2150

22-Oct-07 23:58

Hi.

I want to plot the spectral diagram of a wav file onto a panel, which can be pretty long(the graph). The panel has a limited length, say 400 px. How can I add scroll bars to the Panel, so I can scroll back and forth to see the entire graph?

I know that the Panel has a property called Autoscroll, automatically adds H&V scroll bars if there are controls outside the visible area. But nothing similar happens if I programatically draw something outside the panel's client area.

Any ideas or suggestions?

Thanks.

Harini N K23-Oct-07 0:05

Harini N K

23-Oct-07 0:05

Hi
Use DIV section instead of panel.

Add your diagram section inside DIV Section and you can set the size for width and height; add the style as OVERFLOW: auto;

Hope this solves your problem.

Harini

blackjack215023-Oct-07 0:40

blackjack2150

23-Oct-07 0:40

I forgot to mention that this is a Windows application, not a web site.
Thanks anyway.

Ajay.k_Singh23-Oct-07 1:58

Ajay.k_Singh

23-Oct-07 1:58

Put a picture box control in a panel and set its SizeMode property to AutoSize and then set AutoScroll property of Panel to True.

Now draw your chart on Picture box instead of Panel.

However the most important point is that, in this scenario you will need to reset the width of Picture box according to the increasing size of Graph. Therefore you will have to measure the width of the drawn area and reset width of Picture Box.

Following is a small code snippet which I used to test, it draws a long string on a Picturebox and Panel will show scroll bar as expected.-

------------------Code Start------------------------------------------------------

private void PictureBox1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)

{

Graphics g = e.Graphics;

string str = "JJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmJJJJJJJJJJJ";

g.DrawString(str, new Font("Arial", 14, FontStyle.Bold, GraphicsUnit.Pixel), Brushes.Black, 50, 50);

this.PictureBox1.Width = g.MeasureString(str, new Font("Arial", 14, FontStyle.Bold, GraphicsUnit.Pixel)).Width + 4;

}
-------------Code End--------------------------------------

I hope this will help you in finding the exact resolution.

-Dave.

Dave Traister,
ComponentOne LLC.
www.componentone.com