C#

Member 590310 wrote:

i want to add a method to dll which could return a value.hw can i do that?

namespace my
{

class ABC
{
 private int _intValue=10;
 public int ReturnValue()
 {
  return _intValue;
 }
}

my.ABC oABC = new my.ABC();
Console.WriteLine(oABC.ReturnValue());

string asseblyId = @"NewAssembly,Version=1.0.0.0,Culture=neutral,PublicKeyToken=531174506d670b8c";
            ObjectHandle Handle=Activator.CreateInstance(asseblyId, "NewAssembly.ClassName");
            object obj = Handle.Unwrap();
            object[] parm = new object[] { 2, 4 };
            object[] parm1 = new object[] { "Hello" };
            Type t = obj.GetType();
            //Invoketion of the Method...........
            t.InvokeMember("DoIt", BindingFlags.Public | BindingFlags.NonPublic|BindingFlags.InvokeMethod|BindingFlags.Instance ,null , obj ,null);
            int i=(int)t.InvokeMember("Add", BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.InvokeMethod | BindingFlags.Instance, null, obj,parm);
            Console.WriteLine(i);
            //Set And Get the property 
            t.InvokeMember("Name", BindingFlags.Public | BindingFlags.SetProperty|BindingFlags.Instance , null, obj, parm1);
            string strname=(string)t.InvokeMember("Name", BindingFlags.Public|BindingFlags.GetProperty| BindingFlags.Instance, null, obj, null);
            Console.WriteLine(strname);

public class Employee
    {
     public string _name;
     public int _age;
     public string _address;
     public  string _id;
        public Employee()
        {
        }
        public string Name
        {
            get
            {
                return this._name; 
            }
            set
            {
                this._name = value;
            }
        }
        public int Age
        {
            get
            {
                return this._age;
            }
            set
            {
                this._age = value; 
            }
        }
        public string ID
        {
            get
            {
                return this._id; 
            }
            set {
                this._id = value; 
            }
        }
        public int Add(int i, int j)
        {
            return i + j;
        }
        public void DoIt()
        {
            Console.WriteLine("Welcome from DO it"); 
        }
        public override string ToString()
        {
            return String.Format("ID :{0} Name:={1} Age{2}", this._id, this._name, this._age);
        }   
    }

public static class Settings
{
  private static string _connectionString = string.Empty;
  public static string ConnectionString
  {
    get
    {
      if (string.IsNullOrEmpty(_connectionString))
        _connectionString = ConfigurationManager.ConnectionStrings["connection_string_stored_in_config_file"].COnnectionString;
      return _connectionString;
    }
  }
}

using (SqlConnection myConnection = new SqlConnection(Settings.ConnectionString))
{
}

Pete O'Hanlon wrote:

wouldn't be tackling this as a beginner

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace TestApplication
{
    public static class Settings
{
  private static string _connectionString = string.Empty;
  public static ConnectionString
  {
    get
    {
      if (string.IsNullOrEmpty(_connectionString))
        _connectionString = ConnectionManager.ConnectionStrings["connection_string_stored_in_config_file"];
      return _connectionString;
    }
  }
}
}

Terence van Schalkwyk wrote:

public static ConnectionString

public static string ConnectionString

_connectionString = ConnectionManager.ConnectionStrings["connection_string_stored_in_config_file"];