// (c) Copyright Microsoft Corporation.
// This source is subject to the Microsoft Public License (Ms-PL).
// Please see http://go.microsoft.com/fwlink/?LinkID=131993 for details.
// All other rights reserved.
using System;
using System.Diagnostics.CodeAnalysis;
using System.Linq.Expressions;
namespace System.Windows.Controls.Design.Common
{
/// <summary>
/// This set of internal extension methods provide general solutions and
/// utilities in a small enough number to not warrant a dedicated extension
/// methods class.
/// </summary>
internal static class Extensions
{
/// <summary>
/// Helper method to get member name with compile time verification to avoid typo.
/// </summary>
/// <typeparam name="T">The containing class of the member whose name is retrieved.</typeparam>
/// <param name="expr">The lambda expression usually in the form of o => o.member.</param>
/// <returns>The name of the property.</returns>
[SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode", Justification = "Not used in all design time assemblies.")]
public static string GetMemberName<T>(
System.Linq.Expressions.Expression<Func<T, object>> expr)
{
System.Linq.Expressions.Expression body = ((LambdaExpression)expr).Body;
MemberExpression memberExpression = body as MemberExpression;
if (memberExpression == null)
{
memberExpression = (MemberExpression)((UnaryExpression)body).Operand;
}
return memberExpression.Member.Name;
}
}
}
|