Create Data Classes

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace JGClassGenerator
{
	internal partial class FormListInput : FormBaseDialog
	{
		private Dictionary<int, JTypesData> m_DicDataTypes;

		private int m_ParentRecordNumber = 0;

		private JFieldsData m_WorkingFieldsData = null;

		internal delegate void GetFieldNamesListEventHandler(object sender, ref List<string> listFieldNames);
		internal event GetFieldNamesListEventHandler GetFieldNamesList;
		private void OnGetFieldsList(object sender, ref List<string> listFieldNames)
		{
			GetFieldNamesListEventHandler handler = GetFieldNamesList;
			if (handler != null)
				handler(sender, ref listFieldNames);
		}

		private void RaiseGetFieldsListEvent(object sender, ref List<string> listFieldNames)
		{
			OnGetFieldsList(sender, ref listFieldNames);
		}

		internal delegate void FieldDataChangedEventHandler(object sender, JFieldsData fieldData, bool isNew);
		internal event FieldDataChangedEventHandler FieldDataChanged;
		private void OnFieldDataChanged(object sender, JFieldsData fieldData, bool isNew)
		{
			FieldDataChangedEventHandler handler = FieldDataChanged;
			if (handler != null)
				handler(sender, fieldData, isNew);
		}

		private void RaiseFieldDataChanged(object sender, JFieldsData fieldData, bool isNew)
		{
			OnFieldDataChanged(sender, fieldData, isNew);
		}

		internal FormListInput(int parentRecordNumber)
		{
			InitializeComponent();
			this.ShowButtons = true;
			this.m_ParentRecordNumber = parentRecordNumber;
		}

		private void FormListInput_Load(object sender, EventArgs e)
		{
			ControlInitialise();
		}

		private void ControlInitialise()
		{
			ButtonOK.Visible = false;
			ButtonCancelText = "Finished";
			FillDbTypeCombo();
			ClearForm();
			this.m_DicDataTypes = JTypesUpdater.GetDataTypesMatrix();
			AddNewField(this.m_ParentRecordNumber);
		}

		internal void AddNewField(int parentRecordNumber)
		{
			ClearForm();
			this.m_ParentRecordNumber = parentRecordNumber;
			this.m_WorkingFieldsData = new JFieldsData();
			txtFieldLength.Enabled = false;
			ShowMessage("", false);
			cboDbType.Focus();
		}

		public void AutoComplete(ComboBox cb, System.Windows.Forms.KeyPressEventArgs e)
		{
			int searchIndex = -1;

			string searchString = "";

			if (e.KeyChar == '\t')
			{
				if (cb.SelectionStart <= 1)
				{
					cb.Text = "";
					return;
				}

				if (cb.SelectionLength == 0)
					searchString = cb.Text.Substring(0, cb.Text.Length - 1);
				else
					searchString = cb.Text.Substring(0, cb.SelectionStart - 1);
			}
			else
			{
				if (cb.SelectionLength == 0)
					searchString = cb.Text + e.KeyChar;
				else
					searchString = cb.Text.Substring(0, cb.SelectionStart) + e.KeyChar;
			}

			searchIndex = cb.FindString(searchString);

			if (searchIndex != -1)
			{
				cb.SelectedText = "";
				cb.SelectedIndex = searchIndex;
				cb.SelectionStart = searchString.Length;
				cb.SelectionLength = cb.Text.Length;
			}

			e.Handled = true;
		}


		private void cboDbType_KeyDown(object sender, KeyEventArgs e)
		{
			if (e.KeyCode == Keys.Escape)
			{
				cboDbType.SelectedIndex = -1;
			}
		}

		private void cboDbType_KeyPress(object sender, KeyPressEventArgs e)
		{
			AutoComplete(cboDbType, e);
		}

		private void cboDbType_SelectedIndexChanged(object sender, EventArgs e)
		{
			if (cboDbType.SelectedIndex == -1)
				return;

			JTypesData.JTypesIndexData indexData = (JTypesData.JTypesIndexData)cboDbType.SelectedItem;
			JTypesData dataType = m_DicDataTypes[indexData.TypeID];
			lblTypeID.Text = indexData.TypeID.ToString();

			if (dataType.LengthRequired)
			{
				lblFieldLength.Enabled = true;
				txtFieldLength.Enabled = true;
			}
			else
			{
				lblFieldLength.Enabled = false;
				txtFieldLength.Enabled = false;
			}
		}

		private void ClearForm()
		{
			cboDbType.SelectedIndex = -1;
			cboDbType.Text = "";
			lblTypeID.Text = "0";
			txtFieldName.Text = "";
			txtFieldLength.Text = "";
		}

		private void FillDbTypeCombo()
		{
			cboDbType.Items.Clear();

			if (!string.IsNullOrEmpty(JCommon.ProgramDatabasePath))
			{
				List<JTypesData.JTypesIndexData> listIndex = JTypesUpdater.AllIndexData();
				cboDbType.Items.AddRange(listIndex.ToArray());
			}
		}

		private void GetRecordFromForm(JFieldsData fieldsData)
		{
			fieldsData.ParentRecordNumber = this.m_ParentRecordNumber;

			fieldsData.FieldName = Convert.ToString(txtFieldName.Text);
			fieldsData.TypeID = TypeID;
			try
			{
				fieldsData.FieldLength = Convert.ToInt32(txtFieldLength.Text);
			}
			catch
			{
				fieldsData.FieldLength = 0;
			}
		}

		private bool IsDataComplete()
		{
			int fieldLength = 0;

			if (TypeID < 1)
			{
				ShowMessage("Please Select Db Type", true);
				return false;
			}

			if (string.IsNullOrEmpty(txtFieldName.Text) || string.IsNullOrEmpty(cboDbType.Text))
			{
				ShowMessage("Field Name and Type Required", true);
				return false;
			}

			if (IsFieldNameDuplicated(txtFieldName.Text))
			{
				ShowMessage("Duplicate Variable Name : " + txtFieldName.Text, true);
				return false;
			}

			JTypesData dataType = m_DicDataTypes[TypeID];

			if (dataType.LengthRequired)
			{
				try
				{
					fieldLength = Convert.ToInt32(txtFieldLength.Text);
				}
				catch
				{
					fieldLength = 0;
				}
				if (fieldLength == 0)
				{
					ShowMessage("Field Length Required For " + cboDbType.Text, true);
					return false;
				}
			}

			return true;
		}

		private bool IsFieldNameDuplicated(string newName)
		{
			bool result = false;

			List<string> listFieldNames = new List<string>();
			RaiseGetFieldsListEvent(this, ref listFieldNames);

			foreach (string current in listFieldNames)
			{
				if (current == newName)
				{
					result = true;
					break;
				}
			}
			return result;
		}

		private int TypeID
		{
			get
			{
				try
				{
					return Convert.ToInt32(lblTypeID.Text);
				}
				catch
				{
					return 0;
				}
			}
		}

		private void txtFieldName_KeyDown(object sender, KeyEventArgs e)
		{
			if (e.KeyCode == Keys.Return)
			{
				e.SuppressKeyPress = true;
				if (SaveRecord())
					AddNewField(this.m_ParentRecordNumber);
			}
		}

		private void txtFieldLength_KeyDown(object sender, KeyEventArgs e)
		{
			if (e.KeyCode == Keys.Return)
			{
				e.SuppressKeyPress = true;
				if (SaveRecord())
					AddNewField(this.m_ParentRecordNumber);
			}
		}

		private bool SaveRecord()
		{
			if (IsDataComplete())
			{
				GetRecordFromForm(this.m_WorkingFieldsData);
				RaiseFieldDataChanged(this, this.m_WorkingFieldsData, true);
				return true;
			}
			return false;
		}



	}
}