protected virtual int ShouldSerializeSignature(DAEParameter parameter)
{
PropertyDescriptorCollection propertyDescriptors = TypeDescriptor.GetProperties(parameter);
int serializeSignature = 0;
if (propertyDescriptors["ParameterName"].ShouldSerializeValue(parameter))
{
serializeSignature |= 1;
}
if (propertyDescriptors["DAEDbType"].ShouldSerializeValue(parameter))
{
serializeSignature |= 2;
}
if (propertyDescriptors["SourceColumn"].ShouldSerializeValue(parameter))
{
serializeSignature |= 4;
}
if
(
propertyDescriptors["Size"].ShouldSerializeValue(parameter) ||
propertyDescriptors["Direction"].ShouldSerializeValue(parameter) ||
propertyDescriptors["IsNullable"].ShouldSerializeValue(parameter) ||
propertyDescriptors["Precision"].ShouldSerializeValue(parameter) ||
propertyDescriptors["Scale"].ShouldSerializeValue(parameter) ||
propertyDescriptors["SourceVersion"].ShouldSerializeValue(parameter)
)
{
serializeSignature |= 8;
}
return(serializeSignature);
}
public override int Add(object value)
{
DAEParameter localValue = (DAEParameter)value;
_items.Add(localValue);
return(IndexOf(localValue));
}
public override object ConvertTo(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value, Type destinationType)
{
DAEParameter parameter = value as DAEParameter;
if
(
(destinationType == typeof(InstanceDescriptor)) &&
(parameter != null)
)
{
return(GetInstanceDescriptor(parameter));
}
return(base.ConvertTo(context, culture, value, destinationType));
}
protected virtual InstanceDescriptor GetInstanceDescriptor(DAEParameter parameter)
{
ConstructorInfo info;
Type type = parameter.GetType();
switch (ShouldSerializeSignature(parameter))
{
case 0:
case 1:
case 2:
case 3:
info = type.GetConstructor
(
new Type[]
{
typeof(string),
typeof(DAEDbType)
}
);
return(new InstanceDescriptor
(
info,
new object[]
{
parameter.ParameterName,
parameter.DAEDbType
}
));
case 4:
case 5:
case 6:
case 7:
info = type.GetConstructor
(
new Type[]
{
typeof(string),
typeof(DAEDbType),
typeof(string)
}
);
return(new InstanceDescriptor
(
info,
new object[]
{
parameter.ParameterName,
parameter.DAEDbType,
parameter.SourceColumn
}
));
default:
info = type.GetConstructor
(
new Type[]
{
typeof(string),
typeof(DAEDbType),
typeof(int),
typeof(ParameterDirection),
typeof(bool),
typeof(byte),
typeof(byte),
typeof(string),
typeof(DataRowVersion),
typeof(object)
}
);
return(new InstanceDescriptor
(
info,
new object[]
{
parameter.ParameterName,
parameter.DAEDbType,
parameter.Size,
parameter.Direction,
parameter.IsNullable,
parameter.Precision,
parameter.Scale,
parameter.SourceColumn,
parameter.SourceVersion,
parameter.Value
}
));
}
}