Assembly - IsDefined
Determines whether any custom attributes are applied to an assembly. Parameters specify the assembly, and the type of the custom attribute to search for.
public class Program { public static void Main() { Type clsType = typeof(Program); Assembly assy = clsType.Assembly; String assyName = assy.GetName().Name; //C# Extension Method: Assembly - IsDefined bool isdef = assy.IsDefined(typeof(AssemblyDescriptionAttribute)); if (isdef) { Console.WriteLine("The AssemblyDescription attribute is defined for assembly {0}.", assyName); AssemblyDescriptionAttribute adAttr = (AssemblyDescriptionAttribute)assy.GetCustomAttribute(typeof(AssemblyDescriptionAttribute)); if (adAttr != null) Console.WriteLine("The description is \"{0}\".", adAttr.Description); else Console.WriteLine("The description could not be retrieved."); } else Console.WriteLine("The AssemblyDescription attribute is not defined for assembly {0}.", assyName); } }
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using System; using System.Reflection; public static partial class Extensions { /// <summary> /// Determines whether any custom attributes are applied to an assembly. Parameters specify the assembly, and the /// type of the custom attribute to search for. /// </summary> /// <param name="element">An object derived from the class that describes a reusable collection of modules.</param> /// <param name="attributeType">The type, or a base type, of the custom attribute to search for.</param> /// <returns>true if a custom attribute of type is applied to ; otherwise, false.</returns> public static Boolean IsDefined(this Assembly element, Type attributeType) { return Attribute.IsDefined(element, attributeType); } /// <summary> /// Determines whether any custom attributes are applied to an assembly. Parameters specify the assembly, the /// type of the custom attribute to search for, and an ignored search option. /// </summary> /// <param name="element">An object derived from the class that describes a reusable collection of modules.</param> /// <param name="attributeType">The type, or a base type, of the custom attribute to search for.</param> /// <param name="inherit">This parameter is ignored, and does not affect the operation of this method.</param> /// <returns>true if a custom attribute of type is applied to ; otherwise, false.</returns> public static Boolean IsDefined(this Assembly element, Type attributeType, Boolean inherit) { return Attribute.IsDefined(element, attributeType, inherit); } }