Class ExpressionExtensions

Namespace

Htmx.Components.Extensions

Assembly

Htmx.Components.dll

Provides extension methods for working with LINQ expressions in the HTMX Components library.

public static class ExpressionExtensions

Inheritance

object

ExpressionExtensions

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Remarks

These extensions simplify common expression manipulation tasks such as extracting property names and types from lambda expressions used in table column definitions and input model building.

Methods

GetMemberType<T>(Expression<Func<T, object>>)

Extracts the type of the property from an expression like x => x.Property

public static Type GetMemberType<T>(this Expression<Func<T, object>> expression) where T : class

Parameters

expression Expression<Func<T, object>>

The lambda expression that accesses a property.

Returns

Type

The CLR type of the property, with nullable types unwrapped to their underlying type.

Type Parameters

T

The type containing the property.

Examples

Expression<Func<User, object>> expr = u => u.Age; // where Age is int?
Type propertyType = expr.GetMemberType(); // Returns typeof(int)

Remarks

This method automatically unwraps nullable types to return the underlying type. For example, if the property is of type int?, this method returns typeof(int). This is useful for type-specific processing such as input control selection or formatting operations.

Exceptions

ArgumentException

Thrown when the expression is not a member access expression.

ArgumentNullException

Thrown when expression is null.

GetPropertyName<T>(Expression<Func<T, object>>)

Extracts the property name from an expression like x => x.Property

public static string GetPropertyName<T>(this Expression<Func<T, object>> expression)

Parameters

expression Expression<Func<T, object>>

The lambda expression that accesses a property.

Returns

string

The name of the property referenced in the expression.

Type Parameters

T

The type containing the property.

Examples

Expression<Func<User, object>> expr = u => u.Name;
string propertyName = expr.GetPropertyName(); // Returns "Name"

Remarks

This method supports both direct member access (x => x.Property) and member access with type conversion (x => (object)x.Property).

Exceptions

ArgumentException

Thrown when the expression is not a member access expression.

ArgumentNullException

Thrown when expression is null.

GetPropertyName<T, TProp>(Expression<Func<T, TProp>>)

Extracts the property name from a strongly-typed expression like x => x.Property

public static string GetPropertyName<T, TProp>(this Expression<Func<T, TProp>> expression)

Parameters

expression Expression<Func<T, TProp>>

The lambda expression that accesses a property.

Returns

string

The name of the property referenced in the expression.

Type Parameters

T

The type containing the property.

TProp

The type of the property being accessed.

Examples

Expression<Func<User, string>> expr = u => u.Name;
string propertyName = expr.GetPropertyName(); // Returns "Name"

Remarks

This overload provides type safety by avoiding boxing and allows for more specific property type handling.

Exceptions

ArgumentException

Thrown when the expression is not a member access expression.

ArgumentNullException

Thrown when expression is null.