How to find all the types in an Assembly that Inherit from a Specific Type C# We'll tell the ComboBox to display the Type's Name property. Rather than extracting the strings from the type names, we'll bind to the Type object itself, so when the user selects one, we'll have the selected Type object ready. No we have all the types, we can bind them to a WPF combobox. Where(type => baseType.IsAssignableFrom(type)) SelectMany (assembly => assembly.GetTypes()) Var relevantTypes = currentlyLoadedAssemblies Here's a slightly updated version: var baseType = typeof(Base) Pavel's answer gives you a good base for that, though his solution only gives direct subtypes, not types further down the inheritance chain, and only types defined in the same assembly as the base type. The first step is to get a Type object for each of your derived types. If you want to do it yourself in code you would use reflection for example as described in Discovering derived types using reflection. In Visual Studio you would right click on the thing you want to change and in the popup menu select either View all references or View call hierarchy. How to identify derived classes that is going to affect when base class is modified Private string myManipulationStringFunc(string value) PropertyInfo.SetValue(obj, afterRemovalValue, null) String afterRemovalValue = myManipulationStringFunc(value) String value = (string)propertyInfo.GetValue(obj, null) creating a new instance as the instance is not created in the ctor by defaultĮlse if (propertyInfo.PropertyType = typeof(string)) Var pVal = (Prop)propertyInfo.GetValue(obj, null) If (propertyInfo.PropertyType = typeof(Prop)) Var allClassProperties = type.GetProperties() įoreach (var propertyInfo in allClassProperties) some other properties of the derived class, not so relevant. I have not made it as dynamic as it can be. I am not sure what you are trying to accomplish and if it is the best way to do it. Used like: var output = FindAllDerivedTypes() Public static List FindAllDerivedTypes(Assembly assembly) Return FindAllDerivedTypes(Assembly.GetAssembly(typeof(T))) Pretty much the same as Darin's but here you go. Any resemblance to other material is an un-intentional coincidence and should not be misconstrued as malicious, slanderous, or any anything else hereof.Discovering derived types using reflection This article is entirely original, unless specified. This article should not be construed as the best practices white paper. NOTE: This article is purely for demonstration. errorProvider1.SetError(dateTimePicker1, "" ).errorProvider1.SetError(dateTimePicker1, "Appointment cannot be scheduled in the weekend. Please select a weekday" ).errorProvider1.SetError(textBox2, "Please enter your age as a number" ).errorProvider1.SetError(textBox2, "You must be atleast 18 years old to setup a test" ).errorProvider1.SetError(textBox2, "" ).errorProvider1.SetError(textBox2, "Please enter your Age" ).errorProvider1.SetError(textBox1, "" ).errorProvider1.SetError(textBox1, "Please enter your Name" ). MessageBox.Show( "Please enter valid data" ).MessageBox.Show( "Appointment will be created now" ).if (bValidName & bValidAge & bValidTestDate).
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