'%1!ls!' does not implement interface member '%2!ls!'. '%3!ls!' cannot implement '%2!ls!' because it does not have the matching return type of '%4!ls!'.
Lookup identifier is not defined for this message. The message was not created by a call to the Receive method, or lookup ...
ls!' does not contain a definition for '%2!ls!' and no extension method '%2!ls!' accepting a first argument of type '%1!ls!' ...
ls!' does not contain a definition for '%2!ls!' and the best extension method overload '%3!ls!' has some invalid arguments ...
ls!' does not have a predefined size, therefore sizeof can only be used in an unsafe context (consider using System.Runt ...
ls!' does not implement interface member '%2!ls!'. '%3!ls!' cannot implement '%2!ls!' because it does not have the matching ...
ls!' does not implement interface member '%2!ls!'. '%3!ls!' cannot implement an interface member because it is not public. ...
ls!' has a link demand, but overrides or implements '%2!ls!' which does not have a link demand. A security hole may exist. ...
ls!' has no applicable method named '%2!ls!' but appears to have an extension method by that name. Extension methods cannot ...
ls!' hides inherited member '%2!ls!'. To make the current member override that implementation, add the override keyword. ...