public virtual bool TryResolve(string expression, out object value)
{
value = expression;
if (expression.IsNullOrEmpty())
{
return(false);
}
if (expression.IndexOf(".") < 0)
{
//默认给DefaultProvider
expression = "Default.{0}".FormatTo(expression);
}
string[] arrs = expression.Split(new char[] { '.' }, StringSplitOptions.RemoveEmptyEntries);
string prefix = arrs[0];
string name = arrs[1];
IEnvironmentProvider provider = _providers.FirstOrDefault(o => o.Prefix.Split('|').Contains(prefix, StringComparer.OrdinalIgnoreCase));
if (provider != null)
{
value = provider.Resolve(name);
if (value == null)
{
return(false);
}
return(true);
}
value = null;
return(false);
}