Catel framework class library description-catel. Core

1. parameter check

We check whether the method is correct. Generally, the method returns a right error or throws an exception. Most people do not check whether the exception is correct. Therefore, this error is hard to be viewed in a deep stack.

Catel is different from the common check method.

 

public void CheckForException(object obj){    if (obj == null)    {        throw new ArgumentNullException("obj");    }}

 

However, catel records all behaviors, so the method for starting the check is as follows:

public void CheckForException(object obj){if (obj == null){Log.Debug("Argument ‘obj‘ is null in CheckForException");throw new ArgumentNullException("obj");}}

However, if you write the code according to this situation, a lot of repeated code will be generated. Therefore, the argument class is developed, which makes it easy to check parameters.

 

public void CheckForException(object obj){Argument.IsNotNull("obj", obj);}

If the value is a range, it is as follows:

public void CheckForException(object obj){Argument.IsNotNull("obj", obj);}

If you check whether an object implements an interface, use the following method:

public void CheckForException(object obj){Argument.ImplementsInterface("obj", obj, typeof(INotifyPropertyChanged));}

Catel framework class library description-catel. Core