private bool TryGetParamterValue(ActivatorParameterDescriptor context)
{
var entries = DictionaryExtension.ToDictionary((IEnumerable)context.Argument);
foreach (var entry in entries)
{
//判断当前参数名是否与字典条目的键相同
var found = string.Equals(entry.Key?.ToString(), context.ParameterName, StringComparison.OrdinalIgnoreCase);
if (found)
{
object value;
if (Convert.TryConvertValue(entry.Value, context.ParameterType, out value))
{
context.ParameterValue = value;
return(true);
}
else
{
return(false);
}
}
}
return(false);
}
private bool TryGetParameters(ConstructorInfo constructor, object argument, Func <ActivatorParameterDescriptor, bool> binder, out object[] values)
{
var parameters = constructor.GetParameters();
values = new object[parameters.Length];
if (binder == null)
{
binder = ctx => this.TryGetParamterValue(ctx);
}
for (int i = 0; i < parameters.Length; i++)
{
var context = new ActivatorParameterDescriptor(parameters[i].Name, parameters[i].ParameterType, argument);
if (binder(context))
{
values[i] = context.ParameterValue;
}
else
{
return(false);
}
}
return(true);
}