Below is list of Best Extension Methods of .NET
Paging on IQueryable
Paging on IEnumerable
IEnumerable To DataTable
Convert Generic List to DataTable
Check Is Nullable
Get Core Type
Match a string with multiple strings
Add Range to Collection
Force Download a File
Generate HTML Table from IEnumerable
Log / Email the Exception
Resize the Image
Throw an exception if argument / parameter of function is null
Send...
Monday, January 30, 2012
Best Extension Methods: Cookie Extension Methods
Best Cookies Extension Methods
public static class CookieExtensions
{
///
/// Sets a persistent cookie which expires after the given number of days
///
/// The HtmDocument to extend
/// the cookie key
/// the cookie value
/// The number of days before the cookie expires
public static void SetCookie(this HtmlDocument doc, string key, string value, int days)
{
DateTime expiration...
Best Extension Methods: HTTP Extension Methods
Best Http Extension Methods
public static class HttpExtension
{
public static string HtmlEncode(this string data)
{
return HttpUtility.HtmlEncode(data);
}
public static string HtmlDecode(this string data)
{
return HttpUtility.HtmlDecode(data);
}
public static NameValueCollection ParseQueryString(this string query)
{
return HttpUtility.ParseQueryString(query);
}
...
Best Extension Methods: String Extension Methods
Best String Extension Methods
public static class StringExtensions
{
///
/// if the string is NULL, converts it to string.empty. Helpful when trying to avoid null conditions.
///
///
///
public static string IsNullThenEmpty(this string inString)
{
if (inString == null)
return string.Empty;
else
return inString;
}
public static string[] GetStringInBetween(this...
Best Extension Methods: Date and Time
Best Extension Methods for Date and time
public static class DateExtensions
{
///
/// DateDiff in SQL style.
/// Datepart implemented:
/// "year" (abbr. "yy", "yyyy"),
/// "quarter" (abbr. "qq", "q"),
/// "month" (abbr. "mm", "m"),
/// "day" (abbr. "dd", "d"),
/// "week" (abbr. "wk", "ww"),
/// "hour" (abbr. "hh"),
/// "minute" (abbr. "mi", "n"),...
Best Extension Methods: JSON
These are best extension methods for JSON
public static class Json
{
public static string ToJson(this object obj)
{
JavaScriptSerializer serializer = new JavaScriptSerializer();
return serializer.Serialize(obj);
}
public static string ToJson(this object obj, int recursionDepth)
{
JavaScriptSerializer serializer = new JavaScriptSerializer();
serializer.RecursionLimit = recursionDepth;
...
Best Extension Methods: Extensions for Datatable and Datareader
Best Extension Methods for DataTable and DataReader
public static class DataTableReaderExtension
{
#region Select Distinct
///
/// "SELECT DISTINCT" over a DataTable
///
/// Input DataTable
/// Fields to select (distinct)
///
public static DataTable SelectDistinct(this DataTable SourceTable, String FieldName)
{
return SelectDistinct(SourceTable, FieldName, String.Empty);
}
...
Best Extension Methods: Slice of Collection
This Extension method is to get a slice of collection from a collection.
public static IEnumerable Slice(this IEnumerable collection, int start, int end)
{
int index = 0;
int count = 0;
if (collection == null)
throw new ArgumentNullException("collection");
// Optimise item count for ICollection interfaces.
if (collection is ICollection)
...
Best Extension Methods: From IEnumerable To String
This extension method creates a string with specified separator from an IEnumerable List.
///
/// Concatenates a specified separator String between each element of a specified enumeration, yielding a single concatenated string.
///
/// any object
/// The enumeration
/// A String
/// A String consisting of the elements of value interspersed with the separator string.
...
Best Extension Methods: Replace Items in Collection
This extension method replaces an item in a collection that implements the IList interface.
///
/// This extension method replaces an item in a collection that implements the IList interface.
///
/// The type of the field that we are manipulating
/// The input list
/// The position of the old item
/// The item we are goint to put in it's place
/// True in case of a...
Best Extension Methods: Clone
This extension method to get a clone of an object
///
/// Makes a copy from the object.
/// Doesn't copy the reference memory, only data.
///
/// Type of the return object.
/// Object to be copied.
/// Returns the copied object.
public static T Clone(this object item)
{
if (item != null)
{
BinaryFormatter formatter = new BinaryFormatter();
MemoryStream...
Best Extension Methods: Send Email
If your application need functionality to send email at any time may be send a value of string or may be some exception then this extension method will help you.
///
/// Send an email using the supplied string.
///
/// String that will be used i the body of the email.
/// Subject of the email.
/// The email address from which the message was sent.
/// The receiver of the email.
/// The server...
Best Extension Methods: Throw exception argument is Null
This extension method is for parameters of function where you wants that if a parameter/argument of a function is null then you want an exception to be thrown.
//Throw exception if parameters of function is null
// eg: public Test(string input1)
//{
// input1.ThrowIfArgumentIsNull("input1");
//}
public static void ThrowIfArgumentIsNull(this T obj, string parameterName) where T : class
{
if...
Best Extension Methods: Resize Image
If your site has more work on displaying product images then this extension method will best suit for you application. This extension method is able to resize the image.
public static Image ResizeAndFit(this Image image, Size newSize)
{
var sourceIsLandscape = image.Width > image.Height;
var targetIsLandscape = newSize.Width > newSize.Height;
var ratioWidth = (double)newSize.Width / (double)image.Width;
...
Best Extension Methods: Log Exception
One of the best extension method to log / email the exception of the application.
//log exception like: try
//{
// //Your stuff here
//}
//catch(Exception ex)
//{
// ex.Log();
//}
public static void Log(this Exception ex, string additionalMessage = "")
{
StringBuilder msg = new StringBuilder();
if (!string.IsNullOrEmpty(additionalMessage))
{
msg.Append(additionalMessage);
...
Best Extension Methods: From IEnumerable To HTML Table
This extension method is to convert IEnumerable to HTML Table String. You can use it when you wants to show values of IEnumerable on Screen in form of HTML Table.
public static string ToHtmlTable(this IEnumerable list, string tableSyle, string headerStyle, string rowStyle, string alternateRowStyle)
{
var result = new StringBuilder();
if (String.IsNullOrEmpty(tableSyle))
{
result.Append("<table...
Best Extension Methods: Force Download a File
Below Extension method is for Force Download a file
// full path to your file
//var yourFilePath = HttpContext.Current.Request.PhysicalApplicationPath + "Files\yourFile.jpg";
// save downloaded file as (name)
//var saveFileAs = "yourFile.jpg";
// start force download of your file
//Response.ForceDownload(yourFilePath, saveFileAs);
public static void ForceDownload(this HttpResponse Response, string...
Best Extension Methods: AddRange To Collection
Using below extension method we can add a multiple values to a typed collection in one go.
//add value to collection in one statement
public static void AddRange(this ICollection list, params S[] values)
where S : T
{
foreach (S value in values)
list.Add(value);
}
Compiled By: Rajesh Rol...
Best Extension Methods: Is Matching with one of any String
Using below extension method we can check that a value is matching with one of any parameter or not...
// below function is replacement for such condition if(reallyLongStringVariableName == "string1" ||
// reallyLongStringVariableName == "string2" ||
// reallyLongStringVariableName == "string3")
//{
// // do something....
//}
public static bool In(this T source, params T[] list)
...
Best Extension Methods: Get Core Type
Below extension method check for a type and Return underlying type if type is Nullable otherwise return the type
///
/// Return underlying type if type is Nullable otherwise return the type
///
public static Type GetCoreType(Type t)
{
if (t != null && IsNullable(t))
{
if (!t.IsValueType)
{
return t;
}
else
{
...
Best Extension Methods: IsNullable
Below Extension method provides facility to check whether the type is nullable type or not..
///
/// Determine of specified type is nullable
///
public static bool IsNullable(Type t)
{
return !t.IsValueType || (t.IsGenericType && t.GetGenericTypeDefinition() == typeof(Nullable<>));
}
Compiled By: Rajesh Rol...
Best Extension Methods: Convert Generic List To DataTable
Below extension method converts Generic List to DataTable
///
/// Convert a List{T} to a DataTable.
///
public static DataTable ToDataTable(this List items)
{
var tb = new DataTable(typeof(T).Name);
PropertyInfo[] props = typeof(T).GetProperties(BindingFlags.Public | BindingFlags.Instance);
foreach (PropertyInfo prop in props)
{
Type t = GetCoreType(prop.PropertyType);
...
Best Extension Methods: Convert IEnumerable To DataTable
This extension method converts IEnumerable to DataTable
public static DataTable ToDataTable(this IEnumerable items)
{
var tb = new DataTable(typeof(T).Name);
PropertyInfo[] props = typeof(T).GetProperties(BindingFlags.Public | BindingFlags.Instance);
foreach (var prop in props)
{
//tb.Columns.Add(prop.Name, prop.PropertyType);
Type t = GetCoreType(prop.PropertyType);
...
Best Extension Methods: Paging on IEnumerables
Below extension method provides easy way to perform paging on IEnumerables.
public static IEnumerable Page(this IEnumerable source, int page, int pageSize)
{
return source.Skip((page - 1) * pageSize).Take(pageSize);
}
Compiled By: Rajesh Rol...
Best Extension Methods: Paging on IQueryable
Below extension methods allow easy way to perform paging on IQueryables.
public static IQueryable Page(this IQueryable source, int page, int pageSize)
{
return source.Skip((page - 1) * pageSize).Take(pageSize);
}
Compiled By: Rajesh Rol...
Best Extension Methods: Convert To Double
Below extension method converts a value/object to double and if its not convertible then returns 0.0;
//use it like: string s=4.5; double d = s.ToDouble();
public static double ToDouble(this object source)
{
double val = 0;
if (source != null)
{
string str = Convert.ToString(source);
if (! string.IsNullOrEmpty(str))
{
double.TryParse(str, out val);
...
Best Extension Methods: Convert To Integer
below extension methods converts an object/double/string to integer and if its not convertable then returns 0.
public static int ToInt(this object source)
{
int val = 0;
if (source != null)
{
string str = Convert.ToString(source);
if (!string.IsNullOrEmpty(str))
{
int.TryParse(str, out val);
if (val <= 0)
...
Best Extension Methods: Type Conversion
Using below extension method you can convert one type to another type.
public static T To(this object input) where T : IConvertible
{
string type = typeof(T).Name;
TypeCode typecode;
if (!Enum.TryParse(type, out typecode)) throw new ArgumentException("Could not convert!");
return (T)Convert.ChangeType(input, typecode);
}
Compiled By: Rajesh Rol...
Best Extension Methods: IsNull
This is very simple but very useful to get rid of using == null again and again.. just type obj.isNull() and its done..
public static bool IsNull(this object source)
{
return source == null;
}
Compiled By: Rajesh Rol...
Best Extension Methods: Convert Enum To Dictionary
Using below extension method you can convert a enum to a dictionary type.
///
/// Converts Enumeration type into a dictionary of names and values
///
/// Enum type
public static IDictionary EnumToDictionary(this Type t)
{
if (t == null) throw new NullReferenceException();
if (!t.IsEnum) throw new InvalidCastException("object is not an Enumeration");
string[] names = Enum.GetNames(t);
...
Best Extension Methods: Value Exists Between
Using below extension method you can check that the value exists in between of a range or not.
//you can use it like: int a=10; if(a.Between(2,20)){...do some work...}
public static bool Between(this T me, T lower, T upper) where T : IComparable
{
return me.CompareTo(lower) >= 0 && me.CompareTo(upper) < 0;
}
Compiled By: Rajesh Rol...
Best Extension Methods: Execute If Not Null
This is very useful extension method.In a situation where we wants to execute a function if object is not null and if null then return some default value in that scenario we can use this extension method. Now we need not to write if..else code for checking null again and again.
///Use it like:
/// var username = HttpContext.Current.IfNotNull( ctx => ctx.User.IfNotNull( user => user.Identity.IfNotNull( iden => iden.Name...
Wednesday, January 25, 2012
Setup ASP.NET MVC3 on IIS 5
These are steps to setup MVC3 project on IIS 5
1. Right click on Default Web Site and click Properties
2. Make sure the website or virtual directory is an Application.
3. Set permissions to Scripts Only
4. Click Configuration. Under the Mappings tab, click the Add button
5. You need to insert the path to the file aspnet_isapi.dll. This is most likely C:\WINDOWS\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll.
6....
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