A simple regex to see if a string is in a valid email format
public static bool IsValidEmail(string email)
{
string expression = @"^(([^<>()[\]\\.,;:\s@\""]+"
+ @"(\.[^<>()[\]\\.,;:\s@\""]+)*)|(\"".+\""))@"
+ @"((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}"
+ @"\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+"
+ @"[a-zA-Z]{2,}))$";
Regex re = new Regex(expression);
if (re.IsMatch(email))
return (true);
else
return (false);
<a href="http://www.fruitbatscode.com/net/c/uad4-is-valid-email#more-426" class="more-link">Read more...</a>
Converts an enum to a ListItemCollection so users can select an option from an enum. Just cast it back like so:
(enumToUse)Enum.Parse(typeof(enumToUse), DropDownList.SelectedItem.Value)
/// <summary>
/// Converts enum to ListItemCollection
/// </summary>
/// <param name="EnumToUse">Type of enum to use</param>
/// <param name="ListItems">Target LIstItemCollection</param>
public static void EnumToListItemCollection(System.Type EnumToUse, ListItemCollection ListItems)
{
string[] Names;
System.Array Values;
Int32 index;
<a href="http://www.fruitbatscode.com/net/c/uad3-enum-to-listitemcollection#more-421" class="more-link">Read more...</a>
Server controls are great but sometimes you need to change labels for different users, like change ‘Product Name’ to ‘Book Title’ when all they sell is books. You can create a load of properties or just use a simple util like this:
/// <summary>
/// Loops through labels in a control swapping matching values
/// </summary>
/// <param name="items">Dictionary where Key is the value to Search for and Value is wht to replace it with</param>
public static void LabelChange(ControlCollection controls, Dictionary<String, String> items)
{
foreach (Control c in controls)
{
if (c is Label)
{
Label lbl = c as Label;
if (items.ContainsKey(lbl.Text))
{
lbl.Text = items[lbl.Text];
}
}
}
}
I have a little plan to release a small code snippet a day till I run out or get bored 
Just simple little utility functions that do things like check phone numbers, credit cards etc. Nothing special but just handy to have a list around!
Heres the first:
Does the string contain Html? Read more…