Solution:
My CKEditor edit window appeared when I copied config.js file, from ./_source/core to ./ path. Path desribed as ./ is path where ckeditor.js file is placed. That fixed the issue and CKEditor appears normally now under Opera 10.xx

Although the traffic rate is high, most of the images were linked directly to server resources (images hotlinking). Hotlinked images ate my all free bandwidth in 4 days (20GB!) and I need to find a solution to that …

Solution to avoid hotlinking images is to place in images folder a .htaccess file. Although there are toms of examples, most of them don’t work for CodeIgniter framework (as ImageSnip is developed in), especially when developer uses „static” folder to host the css,js,images content…

After hour of browsing I’ve found solution(s) at Jeff Starr blog located at: http://perishablepress.com/press/2007/11/21/creating-the-ultimate-htaccess-anti-hotlinking-strategy/ which AT LAST WORKS! Code below:

###############################
# ultimate hotlink protection #
###############################

# disable directory browsing
# uncomment this option to protect access to directories
# Options -Indexes

# enable the following of symlinks
# uncomment this option if hotlink protection fails to work
# Options +FollowSymLinks

# verify presence of mod rewrite
<IfModule mod_rewrite.c>

 # enable the rewrite engine
 RewriteEngine on

 # check that file exists
 RewriteCond %{REQUEST_FILENAME} -f

 # check for requested file types
 # include additional file types here
 RewriteCond %{REQUEST_FILENAME} \.(gif|jpe?g?|png)$                [NC]

 # allow blank referrer requests
 RewriteCond %{HTTP_REFERER}     !^$

 # allow all requests from your domain
 # edit the domain to match your own
 RewriteCond %{HTTP_REFERER}     !^https?://([^.]+\.)?domain\.      [NC]

 # allow all requests from your ip address
 # edit the ip address to match your own
 RewriteCond %{HTTP_REFERER}     !^https?://123\.123\.123\.123(.*)$ [NC]

 # additional site access
 # include additional sites here replace domain names and or
 # remove unnecessary lines or add new lines for more sites
 RewriteCond %{HTTP_REFERER}     !^https?://([^.]+\.)?domain_01\.   [NC]
 RewriteCond %{HTTP_REFERER}     !^https?://([^.]+\.)?domain_02\.   [NC]
 RewriteCond %{HTTP_REFERER}     !^https?://([^.]+\.)?domain_03\.   [NC]

 # search engine access
 # include or remove search engines feed readers and other sites
 RewriteCond %{HTTP_REFERER}     !search\?q=cache                   [NC]
 RewriteCond %{HTTP_REFERER}     !google\.                          [NC]
 RewriteCond %{HTTP_REFERER}     !yahoo\.                           [NC]

 # allow access to all requests for your anti hotlink image
 # to serve an image instead of delivering a 403 error
 # uncomment the next line and edit the path and file name
 # RewriteCond %{REQUEST_URI}    !^/hotlink\.jpg$                   [NC]

 # deliver the hotlink image for all requests for the listed files
 # protect additional file types by editing the list below
 # if you are serving a file instead of a 403
 # uncomment the next line and edit the path and file name
 # RewriteRule \.(gif|jpe?g?|png)$ http://domain.tld/hotlink.jpg    [R,NC,L]

 # return a 403 error when any of the following file types is requested
 # you can protect additional file types by editing the list below
 RewriteRule \.(gif|jpe?g?|png)$                                  - [F,NC,L]

# close the module container
</ifModule>

As Iam no expert in .htaccess file configuration, this one takes the cake!

Solution to this problem is to select item at same time as the Context menu is shown by using Opening event of the context menu. Following code should be pasted into the Opening event handler function:

Point p = _myGRID.PointToClient(Cursor.Position);
DataGridView.HitTestInfo hti = _myGRID.HitTest(p.X, p.Y);
if (hti.RowIndex > -1)
{
_grid_Feeds.ClearSelection();
_grid_Feeds.Rows[hti.RowIndex].Selected = true;
}

The right clicked row will be selected and from now on you can get the bound object by _myGRID.SelectedRow .

Undefined index: lastBuildDate / lastrss.php / Line Number: 160

As far as I googled around I didn’t find ONE precise fix for it, so I tinker with it and eventually It worked. Probably it’s solution for similar problems in other libs…

Fix:

In lastrss.php find (around line 160)

if ($this->date_format != '' && ($timestamp = strtotime($result['lastBuildDate'])) !==-1) {
// convert lastBuildDate to specified date format
$result['lastBuildDate'] = date($this->date_format, $timestamp);
}

Trick is that PHP5 does not allow (or does not allow us to ignore that) access indexes in arrays that are not declared (or something…). This is PHP5 specific. Anyway fix for this is pretty simple, all what we need to do is to check if such result is defined whith isset() function. Correct code should look like this:

if (isset($result['lastBuildDate']) && $this->date_format != '' && ($timestamp = strtotime($result['lastBuildDate'])) !==-1) {

// convert lastBuildDate to specified date format

$result['lastBuildDate'] = date($this->date_format, $timestamp);

}

In lastRSS lib (which is cool RSS parsing library for PHP) this occurs when two things get together:

1. You define own date_format (and don’t leave it empty as default)
2. You fetch RSS for the first time (before the cache is written). Any another attempt on fetching feeds from same rss address will not cause this error to appear, as long as the cache will be read. If you clear the cache error will come again…

-ERR authentication failed

I was sure that provided config (server, ports, user name) was correct. After several attempts I found out that live.com services REQUIRES max 16 symbol passwords and my password was longer …

Shorting password length to 16 symbols does the trick and allows user (user@live.com) to login …

The Problem:
Application have a grid, which is in real time adding new rows. When it’s view area height is reached, more rows are showed hidden „below” the view area of grid, and user is forced to use vertical scroll bar to scroll to them.

Solution:
We can use „FirstDisplayCell” property of DataGridView property

Code:

if(_grid.Rows.Count>0 && _grid.Rows[_grid.Rows.Count-1].Cells.Count>0)
   _grid.FirstDisplayedCell = _grid.Rows[_grid.Rows.Count-1].Cells[0];

Solution in 2 lines of code

Additional Notes:

Method is thread safe and updates GUI properly using Invoke while invoking on a _grid object

using System.Media;

//....

SystemSounds.Asterisk.Play(); //Makes standard "warning" ding

Problem: we want to show menu, on center of a button, which was clicked.
Graphic representation:

Solution:

_context_menu.Show(_button_myButton, new Point(_button_myButton.Width/2, _button_myButton.Height/2));

Problem1:

Path1 (base): C:\data\my_path
Path2 (target): C:\some_other\folder\data\file.txt
Result: ..\..\some_other\folder\data\file.txt

Problem2:
Path1 (base): C:\data\path
Path2 (target): C:\data\path\somedata\file.txt
Result: .\somedata\file.txt

Solution:

public static string getRelativePath(String baseDirectory, string destinationFile)
 {
   List<String> _from = new List<String>(baseDirectory.Split('\\'));
   List<String> _dest = new List<String>(destinationFile.Split('\\'));

   if (_from[0].ToLower() != _dest[0].ToLower() || _dest.Count==0 || _from.Count==0)
   {
     return destinationFile; //Not same disk
   }

   int lvl = 0;

   for(int i=0; i<_from.Count; i++)
   {

    if (_from[i].ToLower() != _dest[i].ToLower())
    {
     break;
    }

    lvl++;
   }

   for (int j = 0; j < lvl; j++)
   {
    _from.RemoveAt(0);
    _dest.RemoveAt(0);
   }

   String _resultPath = "";
   if (_from.Count == 0) //the file is in higher folder
   {
    _resultPath += ".\\";
    for (int i = 0; i < _dest.Count; i++)
    {
     _resultPath += _dest[i];
     if (i + 1 < _dest.Count)
       _resultPath += "\\";
    }

   }
   else
   {

     for (int i = 0; i < _from.Count; i++)
     {
      _resultPath += "..\\";
     }

     for (int i = 0; i < _dest.Count; i++)
     {
      _resultPath += _dest[i];
      if (i + 1 < _dest.Count)
        _resultPath += "\\";
     }
   }
   return _resultPath;
 }

The idea is to put my own component on form and associate it with already existing TabControl object. Also, I wanted to capture user pressed keys and react on them before they will reach other controls (which require to set KeyPreview to true and add KeyDown/KeyUp event). Willing to encapsulate this process behind developer eyes, I write appropriate code in property of my component. But when I added control in Component Designer I was receiving error while starting application, initialize code of my component was written in InitializeComponent() method before the base Form object was initialized. Like this:

void InitializeComponent()
{
//....
//
// MyComponent
//
this.myComponent.ParentTab = this.tabControl1;
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(522, 273);
this.Controls.Add(this.tabControl1);
this.KeyPreview = true;
this.Name = "Form1";
this.Text = "Form1";
this.myComponent1.ResumeLayout(false);
this.ResumeLayout(false);
}

And in my code I was calling the uninitialized code:

//...
myComponent1.FindForm().KeyDown += //...

FindForm() was returning null (as the form wasn’t yet initialized)

Solution:

1. Create KeyDown (or any) event for the TabControl itself
2. At runtime, check in KeyDown state of the form you want to hook to. If it’s null, you can use the FindForm() because at runtime all controls are already initialized !

Solution was implemented in TabSwitcher component I wrote, for the TabControl control.

It’s that simple!