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Code Issues Releases Wiki Activity

Added Get/SetFieldValue extension methods

pull/60/head
David Hall 2019-05-08 12:50:26 -06:00
parent f738792e11
commit 6627c016f2
1 changed files with 34 additions and 0 deletions
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34
Core/Extensions/ReflectionExtensions.cs
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@ -61,6 +61,29 @@ namespace Vanara.Extensions
bool ImplIEnumT(Type t) => t.IsGenericType && t.GetGenericTypeDefinition() == typeof(IEnumerable<>);
}
/// <summary>Gets a named field value from an object.</summary>
/// <typeparam name="T">The expected type of the field to be returned.</typeparam>
/// <param name="obj">The object from which to retrieve the field.</param>
/// <param name="fieldName">Name of the field.</param>
/// <returns>The field value.</returns>
public static T GetFieldValue<T>(this object obj, string fieldName)
{
if (obj is null) throw new ArgumentNullException(nameof(obj));
return (T)obj.GetType().InvokeMember(fieldName, BindingFlags.GetField | bindingFlags, null, obj, null, null);
}
/// <summary>Gets a named field value from an object.</summary>
/// <typeparam name="T">The expected type of the field to be returned.</typeparam>
/// <param name="obj">The object from which to retrieve the field.</param>
/// <param name="fieldName">Name of the field.</param>
/// <param name="defaultValue">The default value to return in the instance that the field is not found.</param>
/// <returns>The field value, if found, or the <paramref name="defaultValue"/> if not.</returns>
public static T GetFieldValue<T>(this object obj, string fieldName, T defaultValue)
{
try { return GetFieldValue<T>(obj, fieldName); }
catch { return defaultValue; }
}
/// <summary>Gets a named property value from an object.</summary>
/// <typeparam name="T">The expected type of the property to be returned.</typeparam>
/// <param name="obj">The object from which to retrieve the property.</param>
@ -240,6 +263,17 @@ namespace Vanara.Extensions
return ret;
}
/// <summary>Sets a named field on an object.</summary>
/// <typeparam name="T">The type of the field to be set.</typeparam>
/// <param name="obj">The object on which to set the field.</param>
/// <param name="fieldName">Name of the field.</param>
/// <param name="value">The field value to set on the object.</param>
public static void SetFieldValue<T>(this object obj, string fieldName, T value)
{
try { obj?.GetType().InvokeMember(fieldName, BindingFlags.SetField | bindingFlags, null, obj, new object[] { value }, null); }
catch { }
}
/// <summary>Sets a named property on an object.</summary>
/// <typeparam name="T">The type of the property to be set.</typeparam>
/// <param name="obj">The object on which to set the property.</param>