Table of Contents

Class MemberHelper

Namespace
LinqToDB.Expressions
Assembly
linq2db.dll
public static class MemberHelper
Inheritance
MemberHelper

Methods

ConstructorOf(Expression<Func<object>>) 

public static ConstructorInfo ConstructorOf(Expression<Func<object>> func)

Parameters

func Expression<Func<object>>

Returns

ConstructorInfo

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

public static ConstructorInfo ConstructorOf<T>(Expression<Func<T, object>> func)

Parameters

func Expression<Func<T, object>>

Returns

ConstructorInfo

Type Parameters

T

FieldOf<T>(Expression<Func<T, object?>>) 

public static FieldInfo FieldOf<T>(Expression<Func<T, object?>> func)

Parameters

func Expression<Func<T, object>>

Returns

FieldInfo

Type Parameters

T

GetMemberInfo(Expression)

Gets the member information from given expression.

public static MemberInfo GetMemberInfo(Expression expr)

Parameters

expr Expression

The expression.

Returns

MemberInfo

Remarks

Returns member information for given expressions, e.g.:

  • For: x => x.SomeProperty, returns MemberInfo of SomeProperty.
  • For: x => x.SomeMethod(), returns MethodInfo of SomeMethod.
  • For: x => new { X = x.Name }, return ConstructorInfo of anonymous type.
  • For: x => Sql.Property<int>(x, "SomeProperty"), returns MemberInfo of "SomeProperty" if exists on type, otherwise returns DynamicColumnInfo for SomeProperty on given type.

Exceptions

ArgumentException

Only simple, non-navigational, member names are supported in this context (e.g.: x => Sql.Property(x, "SomeProperty")).

GetMemberInfo(LambdaExpression)

Gets the member information from given lambda expression. GetMemberInfo(Expression)

public static MemberInfo GetMemberInfo(LambdaExpression func)

Parameters

func LambdaExpression

The lambda expression.

Returns

MemberInfo

Exceptions

ArgumentException

Only simple, non-navigational, member names are supported in this context (e.g.: x => Sql.Property(x, "SomeProperty")).

GetMemberInfoWithType(Expression)

Gets the member information with type from given expression.

public static MemberHelper.MemberInfoWithType GetMemberInfoWithType(Expression expr)

Parameters

expr Expression

The expression.

Returns

MemberHelper.MemberInfoWithType

Remarks

Returns member information for given expressions, e.g.:

  • For: x => x.SomeProperty, returns MemberInfo of SomeProperty.
  • For: x => x.SomeMethod(), returns MethodInfo of SomeMethod.
  • For: x => new { X = x.Name }, return ConstructorInfo of anonymous type.
  • For: x => Sql.Property<int>(x, "SomeProperty"), returns MemberInfo of "SomeProperty" if exists on type, otherwise returns DynamicColumnInfo for SomeProperty on given type.

Exceptions

ArgumentException

Only simple, non-navigational, member names are supported in this context (e.g.: x => Sql.Property(x, "SomeProperty")).

GetMemberInfoWithType(LambdaExpression)

Gets the member information with type from given lambda expression. GetMemberInfo(Expression)

public static MemberHelper.MemberInfoWithType GetMemberInfoWithType(LambdaExpression func)

Parameters

func LambdaExpression

The lambda expression.

Returns

MemberHelper.MemberInfoWithType

Exceptions

ArgumentException

Only simple, non-navigational, member names are supported in this context (e.g.: x => Sql.Property(x, "SomeProperty")).

MemberOf<T>(Expression<Func<T, object?>>) 

public static MemberInfo MemberOf<T>(Expression<Func<T, object?>> func)

Parameters

func Expression<Func<T, object>>

Returns

MemberInfo

Type Parameters

T

MemberOf<T, TMember>(Expression<Func<T, TMember>>) 

public static MemberInfo MemberOf<T, TMember>(Expression<Func<T, TMember>> func)

Parameters

func Expression<Func<T, TMember>>

Returns

MemberInfo

Type Parameters

T
TMember

MethodOf(Expression<Action>) 

public static MethodInfo MethodOf(Expression<Action> func)

Parameters

func Expression<Action>

Returns

MethodInfo

MethodOf(Expression<Func<object?>>) 

public static MethodInfo MethodOf(Expression<Func<object?>> func)

Parameters

func Expression<Func<object>>

Returns

MethodInfo

MethodOfGeneric(Expression<Action>) 

public static MethodInfo MethodOfGeneric(Expression<Action> func)

Parameters

func Expression<Action>

Returns

MethodInfo

MethodOfGeneric(Expression<Func<object?>>) 

public static MethodInfo MethodOfGeneric(Expression<Func<object?>> func)

Parameters

func Expression<Func<object>>

Returns

MethodInfo

MethodOfGeneric<T>(Expression<Func<T, object?>>) 

public static MethodInfo MethodOfGeneric<T>(Expression<Func<T, object?>> func)

Parameters

func Expression<Func<T, object>>

Returns

MethodInfo

Type Parameters

T

MethodOfGeneric<T1, T2>(Expression<Func<T1, T2, object?>>) 

public static MethodInfo MethodOfGeneric<T1, T2>(Expression<Func<T1, T2, object?>> func)

Parameters

func Expression<Func<T1, T2, object>>

Returns

MethodInfo

Type Parameters

T1
T2

MethodOfGeneric<T1, T2, T3>(Expression<Func<T1, T2, T3, object?>>) 

public static MethodInfo MethodOfGeneric<T1, T2, T3>(Expression<Func<T1, T2, T3, object?>> func)

Parameters

func Expression<Func<T1, T2, T3, object>>

Returns

MethodInfo

Type Parameters

T1
T2
T3

MethodOfGeneric<T1, T2, T3, T4>(Expression<Func<T1, T2, T3, T4, object?>>) 

public static MethodInfo MethodOfGeneric<T1, T2, T3, T4>(Expression<Func<T1, T2, T3, T4, object?>> func)

Parameters

func Expression<Func<T1, T2, T3, T4, object>>

Returns

MethodInfo

Type Parameters

T1
T2
T3
T4

MethodOf<T>(Expression<Func<T, object?>>) 

public static MethodInfo MethodOf<T>(Expression<Func<T, object?>> func)

Parameters

func Expression<Func<T, object>>

Returns

MethodInfo

Type Parameters

T

MethodOf<T1, T2>(Expression<Func<T1, T2, object?>>) 

public static MethodInfo MethodOf<T1, T2>(Expression<Func<T1, T2, object?>> func)

Parameters

func Expression<Func<T1, T2, object>>

Returns

MethodInfo

Type Parameters

T1
T2

MethodOf<T1, T2, T3>(Expression<Func<T1, T2, T3, object?>>) 

public static MethodInfo MethodOf<T1, T2, T3>(Expression<Func<T1, T2, T3, object?>> func)

Parameters

func Expression<Func<T1, T2, T3, object>>

Returns

MethodInfo

Type Parameters

T1
T2
T3

MethodOf<T1, T2, T3, T4>(Expression<Func<T1, T2, T3, T4, object?>>) 

public static MethodInfo MethodOf<T1, T2, T3, T4>(Expression<Func<T1, T2, T3, T4, object?>> func)

Parameters

func Expression<Func<T1, T2, T3, T4, object>>

Returns

MethodInfo

Type Parameters

T1
T2
T3
T4

PropertyOf(Expression<Func<object?>>) 

public static PropertyInfo PropertyOf(Expression<Func<object?>> func)

Parameters

func Expression<Func<object>>

Returns

PropertyInfo

PropertyOf<T>(Expression<Func<T, object?>>) 

public static PropertyInfo PropertyOf<T>(Expression<Func<T, object?>> func)

Parameters

func Expression<Func<T, object>>

Returns

PropertyInfo

Type Parameters

T