private string GetInvocationListFlag(identify_null start, identify_null working)
{
DelegateCombine1 delctor = new DelegateCombine1();
TestClass testinstance = new TestClass();
string sFlag = string.Empty;
if (start == identify_null.c_Start_null_false)
{
delctor.starkWork = new booldelegate(testinstance.StartWork_Bool);
}
else
{
delctor.starkWork = null;
}
if (working == identify_null.c_Working_null_false)
{
delctor.working = new booldelegate(testinstance.Working_Bool);
}
else
{
delctor.working = null;
}
booldelegate combine = (booldelegate)Delegate.Combine(delctor.starkWork, delctor.working);
if (combine == null)
{
return(string.Empty);
}
for (IEnumerator itr = combine.GetInvocationList().GetEnumerator(); itr.MoveNext();)
{
booldelegate bd = (booldelegate)itr.Current;
if (bd.Equals(delctor.starkWork))
{
sFlag += c_StartWrok;
}
if (bd.Equals(delctor.working))
{
sFlag += c_Working;
}
}
combine();
return(sFlag);
}
private bool CombineImpl(booldelegate delegatesrc, identify_null start)
{
DelegateCombineImpl delctor = new DelegateCombineImpl();
TestClass testinstance = new TestClass();
string sFlag = string.Empty;
string sFlagAdd = string.Empty;
booldelegate combineImpl = delegatesrc;
if (start == identify_null.c_Start_null_false)
{
delctor.starkWork = new booldelegate(testinstance.StartWork_Bool);
combineImpl += (booldelegate)delctor.starkWork;
sFlagAdd = c_StartWork;
}
else if (start == identify_null.c_Start_null_false_duplicate)
{
delctor.starkWork = new booldelegate(testinstance.StartWork_Bool);
combineImpl += (booldelegate)delctor.starkWork;
sFlagAdd = c_StartWork;
//The invocation list can contain duplicate entries; that is, entries that refer to the same method on the same object.
combineImpl += (booldelegate)delctor.starkWork;
sFlagAdd += sFlagAdd;
}
else if (start == identify_null.c_Start_null_true)
{
delctor.starkWork = null;
combineImpl += (booldelegate)delctor.starkWork;
}
else if (start == identify_null.c_Working_null_false)
{
delctor.working = new booldelegate(testinstance.Working_Bool);
combineImpl += (booldelegate)delctor.working;
sFlagAdd = c_Working;
}
else
{
delctor.working = null;
combineImpl += (booldelegate)delctor.working;
}
if (combineImpl == null)
{
return(true);
}
for (IEnumerator itr = combineImpl.GetInvocationList().GetEnumerator(); itr.MoveNext();)
{
booldelegate bd = (booldelegate)itr.Current;
//the filter is to get the delegate which is appended through equals method.
if (bd.Equals(delctor.starkWork))
{
sFlag += c_StartWork;
}
if (bd.Equals(delctor.working))
{
sFlag += c_Working;
}
}
combineImpl();
//judge delegate is appended to the end of the invocation list of the current
if (sFlag == sFlagAdd)
{
return(true);
}
else
{
return(false);
}
}