How to use the property of Visual WebPart in the Application

How to use the property of Visual WebPart in the Application:-

Sending Code:-

LegacyRemediationNew.cs file of Visual WebPart:-

string _connectionString = "DataSource="";Initial Catalog=;Integrated Security=False;uid=; pwd=";

        [Personalizable(PersonalizationScope.Shared)]
        [WebBrowsable(true)]
        [System.ComponentModel.Category("LRQ Custom Properties")]
        [WebDisplayName("Database Connection String")]
        [WebDescription("Add/Update Sql Database Connection String")]
        public string ConnectionString
        {
            get
            {
                return _connectionString;
            }
            set { _connectionString = value; }
        }




In VisualWebPart1UserControl.ascx.cs, i created one object for 

LegacyRemediationNew obj =new LegacyRemediationNew();
obj.ConnectionString is showing null, but how to use the Visual WebPart Property in the application

Ravindranath