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39 lines
1.3 KiB
39 lines
1.3 KiB
// Copyright (c) MudBlazor 2021
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// MudBlazor licenses this file to you under the MIT license.
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// See the LICENSE file in the project root for more information.
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using System.Linq.Expressions;
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using Connected.Annotations;
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namespace Connected
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{
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public static class ExpressionExtensions
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{
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public static string GetFullPathOfMember<T>(this Expression<Func<T>> property)
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{
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var resultingString = string.Empty;
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var p = property.Body as MemberExpression;
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while (p != null)
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{
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if (p.Expression is MemberExpression)
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{
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resultingString = p.Member.Name + (resultingString != string.Empty ? "." : string.Empty) + resultingString;
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}
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p = p.Expression as MemberExpression;
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}
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return resultingString;
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}
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/// <summary>
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/// Returns the display name attribute of the provided field property as a string. If this attribute is missing, the member name will be returned.
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/// </summary>
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public static string GetLabelString<T>(this Expression<Func<T>> expression)
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{
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var memberExpression = (MemberExpression)expression.Body;
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var propertyInfo = memberExpression.Expression?.Type.GetProperty(memberExpression.Member.Name);
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return propertyInfo?.GetCustomAttributes(typeof(LabelAttribute), true).Cast<LabelAttribute>().FirstOrDefault()?.Name ?? string.Empty;
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}
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}
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}
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