public bool Compatible(Type type)
{
if (type == null)
{
/*
* 这里type是有可能为null的，是正常情况，如：
* _gridView.GridViewController.DataBind(e.Node.Items, e.Node.ItemType, e.Node.DataBoundItem);
* 其中的 e.Node.ItemType 为null，因为没有配子类型
* 这时进到这里来的时候，type就为null
* 按讲，外部调用者应确认type是否为null，但为保证健壮性，这里视type为null时，返回false
* 不抛异常，但断言，因为应该在外部调用之前判断type是否为null
*/
Debug.Assert(false, "type为null");
return(false);
}
bool compatible = false;
if (DataBoundType.IsClass)
{
compatible = type.Equals(DataBoundType) ||
(_actOnSubClass && type.IsSubclassOf(DataBoundType));
}
else if (DataBoundType.IsInterface)
{
compatible = type == DataBoundType || type.GetInterface(DataBoundType.ToString()) != null;
}
return(compatible);
}
public void AddCodon(TypeBinderDataGridViewTypeCodon codon)
{
if (codon == null)
{
Debug.Assert(false, "codon 为 null");
throw new ArgumentNullException();
}
if (_codons.Contains(codon))
{
Debug.Assert(false, "_typeBinderDataGridViewTypeCodons 重复添加:" + codon.ToString());
return;
}
Type dataBoundType = codon.DataBoundType;
Debug.Assert(GetCodon(dataBoundType) == null,
"_typeBinderDataGridViewTypeCodons 重复添加类型:" + codon.ToString());
bool compatible = false;
if (DataBoundType.IsClass)
{
compatible = dataBoundType.Equals(DataBoundType) || dataBoundType.IsSubclassOf(DataBoundType);
}
else if (DataBoundType.IsInterface)
{
compatible = dataBoundType == DataBoundType ||
dataBoundType.GetInterface(DataBoundType.ToString()) != null;
}
if (compatible == false)
{
Debug.Assert(false, "指定的 codon 所绑定的对象类型不是该 ComboCodon 绑定类型的子类型:" + codon.ToString());
}
_codons.Add(codon);
}
public override string ToString()
{
if (DataBoundType != null)
{
return(DataBoundType.ToString());
}
else
{
return(base.ToString());
}
}
public bool UpwardCompatible(Type type)
{
if (type == null)
{
Debug.Assert(false, "type为null");
throw new ArgumentNullException();
}
bool compatible = type.Equals(DataBoundType) || DataBoundType.IsSubclassOf(type);
return(compatible);
}
public bool UpwardCompatible(Type type)
{
if (type == null)
{
Debug.Assert(false, "type为null");
throw new ArgumentNullException();
}
bool compatible = false;
if (DataBoundType.IsClass)
{
compatible = type.Equals(DataBoundType) || DataBoundType.IsSubclassOf(type);
}
else if (DataBoundType.IsInterface)
{
compatible = DataBoundType == type || DataBoundType.GetInterface(type.ToString()) != null;
}
return(compatible);
}
public bool Compatible(Type type)
{
if (type == null)
{
Debug.Assert(false, "type为null");
return(false);
}
bool compatible = false;
if (DataBoundType.IsClass)
{
compatible = type.Equals(DataBoundType) ||
(_actOnSubClass && type.IsSubclassOf(DataBoundType));
}
else if (DataBoundType.IsInterface)
{
compatible = type == DataBoundType || type.GetInterface(DataBoundType.ToString()) != null;
}
return(compatible);
}
