Type Summary
public abstract class ConstructorInfo : MethodBase
{
// Constructors
protected ConstructorInfo();
// Fields
public static readonly string ConstructorName = ".ctor";
public static readonly string TypeConstructorName = ".cctor";
// Properties
MS public override MemberTypes MemberType { get; }
// Methods
public abstract object Invoke(BindingFlags invokeAttr, Binder binder,
object[] parameters, CultureInfo culture);
public object Invoke(object[] parameters);
}
Example
using System;
using System.Reflection;
/// <summary>
/// This example shows how to print out constructors in C#
/// syntax.
/// </summary>
public class ConstructorInfoSample
{
public static void Main()
{
Type type = typeof(String);
foreach (ConstructorInfo ctor in type.GetConstructors(
BindingFlags.NonPublic | BindingFlags.Public |
BindingFlags.Instance ))
{
//Skip any constructors that are not publicly accessible
if (!(ctor.IsPublic || ctor.IsFamily || ctor.IsFamilyOrAssembly))
{
continue;
}
Console.Write(ctor.IsPublic ? "public " : ctor.IsFamily ?
"protected " : "protected internal ");
Console.Write(ctor.DeclaringType.Name);
Console.Write('(');
ParameterInfo[] parameters = ctor.GetParameters();
for (int i = 0; i < parameters.Length; i++)
{
Console.Write("{0} {1}", parameters[i].ParameterType,
parameters[i].Name);
if (i != parameters.Length - 1)
{
Console.Write(", ");
}
}
Console.Write(");");
Console.WriteLine();
} //end foreach loop
ConstructorInfo c = typeof(String).GetConstructor(new Type[] {
typeof(char), typeof(int) });
string s = (string) c.Invoke(new object[] {'.', 7});
Console.WriteLine ("The result is '{0}'",s);
Console.WriteLine();
Console.WriteLine();
Console.WriteLine("Press Enter to continue");
Console.ReadLine();
} //end main
} //end class
The output is
public String(System.Char* value);
public String(System.Char* value, System.Int32 startIndex, System.Int32 length);
public String(System.SByte* value);
public String(System.SByte* value, System.Int32 startIndex, System.Int32 length);
public String(System.SByte* value, System.Int32 startIndex, System.Int32 length,
System.Text.Encoding enc);
public String(System.Char[] value, System.Int32 startIndex, System.Int32 length);
public String(System.Char[] value);
public String(System.Char c, System.Int32 count);
The result is '.......'
Press Enter to continue
|
