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Friday, June 10, 2011
Tuesday, April 19, 2011
Sort a Listbox using IComparer in C#
What are we cooking today?
Sort a Listbox using IComparer in C# without loosing the value.
RECIPE
RECIPE
The call
SortList(MyListbox);
The Procedure
public void SortList(ListBox list)
{
try
{
//---FROM LISTBOX TO LIST<>
List ListItems = new List();
foreach (ListItem lst in list.Items)
{
ListItems.Add(lst);
}
//---SORT LIST<>
ListItemComparer listC = new ListItemComparer();
ListItems.Sort(listC.Compare);
//---CLEAR LISTBOX
list.Items.Clear();
//---ADD FROM ordered LIST<> to LISTBOX
foreach (ListItem li in ListItems)
{
list.Items.Add(li);
}
}
catch (Exception ex)
{
lblMsg.Text = ex.Message;
}//--end catch
}
The Icomparer: I am using this because a listitem has text and value, and we just want to order by the text, which could be a person's name or a product( the criteria could be also the value like price, personId, year...)
public class ListItemComparer : IComparer
{
public int Compare(ListItem a, ListItem b)
{
int result = string.Compare(a.Text, b.Text);
return result;
}
}
Monday, February 28, 2011
Some helpful REGEX (regular expressions for postal code, email, phone, SIN)
What are we cooking today?
Some REGEX (Regular Expresions) for:
- Canadian/US Postal Code
- Email (x@x.x)
- Phone number (xxx)(xxx-xx-xx)
- Canadian SIN (xxx-xxx-xxx)
Recipe
Valid Canada Postal Code
(^[ABCEGHJ-NPRSTVXY]{1}[0-9]{1}[ABCEGHJ-NPRSTV-Z]{1}[ ]?[0-9]{1}[ABCEGHJ-NPRSTV-Z]{1}[0-9]{1}$)
Valid US and Canada
(\d{5}(-\d{4})?)|(^[ABCEGHJ-NPRSTVXY]{1}[0-9]{1}[ABCEGHJ-NPRSTV-Z]{1}[ ]?[0-9]{1}[ABCEGHJ-NPRSTV-Z]{1}[0-9]{1}$) )
Valid Email
\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*
Valid US Phone
((\(\d{3}\) ?)|(\d{3}-))?\d{3}-\d{4}
Canadian SIN
\d{3}-\d{3}-\d{3}
Thursday, February 24, 2011
Loop through an enumeration to fill a dropdownlist
What are we cooking today?
Fill a dropdown list with my enumeration
Recipe
Recipe
Tuesday, February 8, 2011
Troubleshooting a web service consuming app error
What are we cooking today?
Troubleshooting :
"Could not find default endpoint element that references contract in the ServiceModel client configuration section"
"Could not find default endpoint element that references contract in the ServiceModel client configuration section"
Recipe
- Imagine you want to consume a web service.
- You created a class that have the reference to the web service
- You created a website (consuming application) that use the class described in (2)
When you run the web app you get this message:
"Could not find default endpoint element that references contract in the ServiceModel client configuration section"
An easy solution that worked for me: Copy all the content of the MyClassNamespace.dll.config when you compiled your class into the web.config file of the consuming application. (The objective is to expose the endpoint and the correct contract name)
Add to web.config
Other possible solutions I found when searching:
a) Copy config file (MyApi.dll.config) from class library to bin folder of consuming application and rename it to MyApp.config
b) Programatically create instances of Binding and RemoteAddress objects and use the constructor that takes these 2 parameters
Thursday, December 2, 2010
Clear all the TextBoxes in a form
What are we cooking today?
How to clear TextBoxes in a form that uses masterpages. (C#)
Recipe
This procedure clears all the textboxes in a form. Please note this works when using a masterpage:
public void ClearTextboxesInForm(string strContentPlaceHolder)
{
foreach (Control control in Form.Controls)
{
if (control.ID == strContentPlaceHolder)
{
foreach (Control ctrl in control.Controls)
{
if (ctrl is TextBox) //---Find the textboxes
{
((TextBox)ctrl).Text = "";
}
}
}
}
}
How to clear TextBoxes in a form that uses masterpages. (C#)
Recipe
This procedure clears all the textboxes in a form. Please note this works when using a masterpage:
public void ClearTextboxesInForm(string strContentPlaceHolder)
{
foreach (Control control in Form.Controls)
{
if (control.ID == strContentPlaceHolder)
{
foreach (Control ctrl in control.Controls)
{
if (ctrl is TextBox) //---Find the textboxes
{
((TextBox)ctrl).Text = "";
}
}
}
}
}
Wednesday, September 22, 2010
Block search engines
What are we cooking today?
How to block Search Engines from indexing site.
Recipe
How to block Search Engines from indexing site.
Recipe
- Add a robot.txt file with instructions to prevent all robots from indexing the page
User-agent: * Disallow: / - I added a tag in the links to prevent from indexing too.
Sample http://www.mylink.com rel="nofollow">My Link
- I added a metatag :
Other details
To exclude all robots from the entire server
User-agent: * Disallow: /To allow all robots complete access
User-agent: * Disallow:
Or create an empty “/robots.txt” file.To exclude all robots from part of the server
User-agent: * Disallow: /cgi-bin/ Disallow: /tmp/ Disallow: /private/To exclude a single robot
User-agent: BadBot Disallow: /To allow a single robot
User-agent: WebCrawler Disallow: User-agent: * Disallow: /More on robots --> http://www.robotstxt.org/
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