User-driven applications

using System;
using System .Collections .Generic;
using System .IO;
using System .Windows .Forms;

using MoveGraphLibrary;

namespace UserDrivenApplications
{
    public class Data_String
    {
        string name;
        bool bShowToUser;
        string text;       // this is the string itself
        string comment = "";

        // -------------------------------------------------
        public Data_String (string strName, bool bShow, string txt, string cmnt) 
        {
            string trimmedtext = txt .Trim ();
            if (!string .IsNullOrEmpty (trimmedtext))
            {
                name = strName;
                bShowToUser = bShow;
                text = trimmedtext;
                if (!string .IsNullOrEmpty (cmnt))
                {
                    comment = cmnt;
                }
            }
        }
        public Data_String (string strName, bool bShow, string txt)
            : this (strName, bShow, txt, null)
        {
        }
        public Data_String (string strName, string txt, string cmnt) 
            : this (strName, true, txt, cmnt)  
        {
        }
        public Data_String (string strName, string txt)
            : this (strName, true, txt, null)
        {
        }
        // -------------------------------------------------        Name
        public string Name
        {
            get { return (name); }
            set
            {
                if (!string .IsNullOrEmpty (value))
                {
                    name = value;
                }
            }
        }
        // -------------------------------------------------        ShowToUser
        public bool ShowToUser
        {
            get { return (bShowToUser); }
            set { bShowToUser = value; }
        }
        // -------------------------------------------------        HasData
        public bool HasData
        {
            get { return (!string .IsNullOrEmpty (text)); }
        }
        // -------------------------------------------------        Value
        public string Value
        {
            get { return (text); }
            set
            {
                if (!string .IsNullOrEmpty (value))
                {
                    text = value;
                }
            }
        }
        // -------------------------------------------------        Comment
        public string Comment
        {
            get { return (comment); }
            set
            {
                if (value != null)
                {
                    comment = value;
                }
            }
        }
        // -------------------------------------------------        IntoFile
        public void IntoFile (BinaryWriter bw)
        {
            try
            {
                if (HasData)
                {
                    bw .Write (name);           // 0
                    bw .Write (bShowToUser);    // 1
                    bw .Write (text);           // 2
                    bw .Write (comment);        // 3
                }
            }
            catch
            {
            }
            finally
            {
            }
        }
        // -------------------------------------------------        FromFile
        public static void FromFile (BinaryReader br, out Data_String data)
        {
            try
            {
                data = new Data_String (br .ReadString (), br .ReadBoolean (), br .ReadString (), br .ReadString ());
            }
            catch
            {
                data = null;
                string strText = "Can't read Data_String";
                MessageBox .Show (strText, "Problem on Reading", MessageBoxButtons .OK, MessageBoxIcon .Exclamation);
            }
            finally
            {
            }
        }
    }
}