本文整理匯總了C#中System.Dynamic.DynamicObject.TryInvokeMember方法的典型用法代碼示例。如果您正苦於以下問題：C# DynamicObject.TryInvokeMember方法的具體用法？C# DynamicObject.TryInvokeMember怎麽用？C# DynamicObject.TryInvokeMember使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類System.Dynamic.DynamicObject的用法示例。
在下文中一共展示了DynamicObject.TryInvokeMember方法的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的C#代碼示例。
示例1: TryGetMember
// Add using System.Reflection;
// to the beginning of the file.
// The class derived from DynamicObject.
public class DynamicDictionary : DynamicObject
{
// The inner dictionary.
Dictionary<string, object> dictionary
= new Dictionary<string, object>();
// Getting a property.
public override bool TryGetMember(
GetMemberBinder binder, out object result)
{
return dictionary.TryGetValue(binder.Name, out result);
}
// Setting a property.
public override bool TrySetMember(
SetMemberBinder binder, object value)
{
dictionary[binder.Name] = value;
return true;
}
// Calling a method.
public override bool TryInvokeMember(
InvokeMemberBinder binder, object[] args, out object result)
{
Type dictType = typeof(Dictionary<string, object>);
try
{
result = dictType.InvokeMember(
binder.Name,
BindingFlags.InvokeMethod,
null, dictionary, args);
return true;
}
catch
{
result = null;
return false;
}
}
// This methods prints out dictionary elements.
public void Print()
{
foreach (var pair in dictionary)
Console.WriteLine(pair.Key + " " + pair.Value);
if (dictionary.Count == 0)
Console.WriteLine("No elements in the dictionary.");
}
}
class Program
{
static void Main(string[] args)
{
// Creating a dynamic dictionary.
dynamic person = new DynamicDictionary();
// Adding new dynamic properties.
// The TrySetMember method is called.
person.FirstName = "Ellen";
person.LastName = "Adams";
// Calling a method defined in the DynmaicDictionary class.
// The Print method is called.
person.Print();
Console.WriteLine(
"Removing all the elements from the dictionary.");
// Calling a method that is not defined in the DynamicDictionary class.
// The TryInvokeMember method is called.
person.Clear();
// Calling the Print method again.
person.Print();
// The following statement throws an exception at run time.
// There is no Sample method
// in the dictionary or in the DynamicDictionary class.
// person.Sample();
}
}輸出：
FirstName Ellen LastName Adams Removing all the elements from the dictionary. No elements in the dictionary.