/// <summary>
/// Calls the specified method and returns the result of execution
/// </summary>
/// <param name="type">Then Instance objects.</param>
/// <param name="container">Then Instance objects.</param>
/// <param name="name">The name of the method.</param>
/// <param name="args">The parameter of the method.</param>
/// <returns>The result of execution.</returns>
public static object CallMethod(Type type, object container, string name, object[] args)
{
Type[] types = new Type[args.Length];
bool hasNullValue = false;
for (int i = 0; i < args.Length; i++)
{
if (args[i] != null)
{
types[i] = args[i].GetType();
}
else
{
hasNullValue = true;
}
}
MethodInfo method = DynamicHelpers.GetMethod(type, name, types);
if (method != null)
{
//if (hasParam)
//{
// Array arr;
// if (types.Length - 1 == args.Length)
// {
// arr = null;
// }
// else
// {
// arr = Array.CreateInstance(types[types.Length - 1].GetElementType(), args.Length - types.Length + 1);
// for (int i = types.Length - 1; i < args.Length; i++)
// {
// arr.SetValue(args[i], i - (types.Length - 1));
// }
// object[] newArgs = new object[types.Length];
// for (int i = 0; i < newArgs.Length - 1; i++)
// {
// newArgs[i] = args[i];
// }
// newArgs[newArgs.Length - 1] = arr;
// return method.Invoke(container, newArgs);
// }
//}
var pi = method.GetParameters();
if (types.Length == 1 && types[0] == typeof(Dictionary <object, object>) &&
(pi.Length != 1 || !pi[0].ParameterType.IsSubclassOf(typeof(IDictionary))))
{
args = DynamicHelpers.ChangeParameters((Dictionary <object, object>)args[0], pi);
}
else if (hasNullValue)
{
for (int i = 0; i < args.Length; i++)
{
if (args[i] == null &&
!pi[i].ParameterType.IsClass &&
pi[i].DefaultValue != DBNull.Value)
{
args[i] = pi[i].DefaultValue;
}
//else
//{
// args[i] = DefaultForType(pi[i].ParameterType);
//}
}
}
return(method.Invoke(container, args));
}
return(null);
}
/// <summary>
/// 实参是否匹配形参
/// </summary>
/// <param name="pi">形参</param>
/// <param name="args">实参</param>
/// <returns>bool</returns>
public static bool IsMatch(ParameterInfo[] pi, Type[] args)
{
if (pi.Length != args.Length)
{
return(false);
}
//暂不考虑可选参数,默认参数,param参数
for (int i = 0; i < args.Length; i++)
{
if (args[i] == null)
{
continue;
}
if (args[i] != pi[i].ParameterType && !args[i].IsSubclassOf(pi[i].ParameterType) && !DynamicHelpers.CanChange(args[i], pi[i].ParameterType))
{
return(false);
}
}
return(true);
}
