| private TryGetMember ( GetMemberBinder binder, object &result ) : bool | ||
| binder | GetMemberBinder | |
| result | object | |
| return | bool | |
/// <summary>
/// simple helper extension method that allows a get from a named property, determined at runtime by interrogating the member names.
/// </summary>
/// <param name="dyn"></param>
/// <param name="memberName"></param>
/// <returns></returns>
public static object GetValue(this DynamicObject dyn, string memberName)
{
var pd = new ProxyGetMemberBinder(memberName, true);
object result;
if (dyn.TryGetMember(pd, out result))
{
return(result);
}
return(null);
}
/// <summary>
/// 获取动态类型的值
/// </summary>
/// <param name="dynamicObject">实例</param>
/// <param name="key">键名</param>
/// <param name="value">值</param>
/// <returns></returns>
private bool TryGetValue(DynamicObject dynamicObject, string key, out object value)
{
var keys = dynamicObject.GetDynamicMemberNames();
key = keys.FirstOrDefault(item => string.Equals(item, key, StringComparison.OrdinalIgnoreCase));
if (key != null)
{
return dynamicObject.TryGetMember(new KeyBinder(key, false), out value);
}
value = null;
return false;
}
public static DynamicViewModel Create(DynamicObject entity)
{
var result = new DynamicViewModel();
foreach (var memberName in entity.GetDynamicMemberNames())
{
object value;
if (entity.TryGetMember(new GetBinder(memberName, false), out value))
{
result.Set(memberName, value);
}
}
return result;
}
private object GetPropValue(DynamicObject item, string propName)
{
try
{
object obj2;
item.TryGetMember(new MyGetMemberBinder(propName, false), out obj2);
return obj2;
}
catch (Exception innerException)
{
if ((innerException is TargetInvocationException) && (innerException.InnerException != null))
{
innerException = innerException.InnerException;
}
return innerException;
}
}
internal static bool TryGetDynamicMember(DynamicObject o, string name, out object result)
{
return o.TryGetMember(new Binder(name, true), out result);
}