Expression.ListInit Method (NewExpression, MethodInfo, Expression)
Creates a ListInitExpression that uses a specified method to add elements to a collection.
Assembly: System.Core (in System.Core.dll)
public static ListInitExpression ListInit( NewExpression newExpression, MethodInfo addMethod, params Expression initializers )
- Type: System.Linq.Expressions.NewExpression
A NewExpression to set the NewExpression property equal to.
- Type: System.Reflection.MethodInfo
A MethodInfo that represents an instance method that takes one argument, that adds an element to a collection.
newExpression or initializers is null.
One or more elements of initializers are null.
newExpression.Type does not implement IEnumerable.
addMethod is not null and it does not represent an instance method named "Add" (case insensitive) that takes exactly one argument.
addMethod is not null and the type represented by the Type property of one or more elements of initializers is not assignable to the argument type of the method that addMethod represents.
addMethod is null and no instance method named "Add" that takes one type-compatible argument exists on newExpression.Type or its base type.
If addMethod is null, newExpression.Type or its base type must declare a single method named "Add" (case insensitive) that takes exactly one argument. If addMethod is not null, it must represent an instance method named "Add" (case insensitive) that has exactly one parameter. The type represented by the Type property of each element of initializers must be assignable to the argument type of the add method.
The Initializers property of the returned ListInitExpression contains one element of type ElementInit for each element of initializers. The Arguments property of each element of Initializers is a singleton collection that contains the corresponding element of initializers. The AddMethod property of each element of Initializers is equal to addMethod.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.