Azure Service Bus Tester

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Windows.Forms;

namespace RKiss.Tools.ServiceBusTester.Dialogs
{
    public partial class ParametersDialog : Form
    {
        public Dictionary<string, object> Parameters { get; set;}

        public ParametersDialog(Dictionary<string, object> parameters)
        {
            InitializeComponent();

            this.Parameters = parameters;

            if (this.Parameters == null)
                this.Parameters = new Dictionary<string, object>();

            this.ColumnType.Items.AddRange("Boolean", "Int64", "String", "DateTime", "TimeSpan", "Guid");
            
            foreach(var param in this.Parameters)
            {
                string typename = "String";
                if(param.Value != null)
                {
                    if(this.ColumnType.Items.Contains(param.Value.GetType().Name))
                        typename = param.Value.GetType().Name;
                    else if(this.ColumnType.Items.Contains(param.Value.GetType().FullName))
                        typename = param.Value.GetType().FullName;
                }         
                this.dataGridViewParameters.Rows.Add(param.Key, typename, param.Value);

                var row = this.dataGridViewParameters.Rows[this.dataGridViewParameters.Rows.Count - 1];
                row.Cells[this.ColumnValue.Name].ValueType = param.Value.GetType();
            }

            if (this.Parameters.Count() > 0)
            {
                this.Height = this.Size.Height + Math.Min(this.Parameters.Count(), 5) * this.dataGridViewParameters.Rows[0].Height;
                this.MinimumSize = new Size(this.Size.Width, this.Size.Height);
            }

            this.dataGridViewParameters.DefaultCellStyle.SelectionBackColor = Color.SkyBlue;
            this.dataGridViewParameters.ShowRowErrors = true;
            this.ColumnType.DisplayStyleForCurrentCellOnly = true;
            this.buttonOK.Enabled = false;
        }

        private void buttonOK_Click(object sender, EventArgs e)
        {
            this.Parameters.Clear();
            foreach (DataGridViewRow row in dataGridViewParameters.Rows)
            {
                if (row.IsNewRow == false && row.Cells[this.ColumnName.Name].Value != null)
                {
                    this.Parameters.Add((row.Cells[this.ColumnName.Name].Value as string).Trim(), row.Cells[this.ColumnValue.Name].Value);
                }
            }
        }

        private void buttonCancel_Click(object sender, EventArgs e)
        {

        }

        private bool ClearErrorText(int index)
        {
            bool bErrorExists = false;
            foreach (DataGridViewRow row in this.dataGridViewParameters.Rows)
            {
                if(row.Cells[index].Value != null && (row.Cells[index].Value as string).IndexOf(' ') < 0 && string.IsNullOrEmpty(row.Cells[index].ErrorText) == false)
                {
                    string name = (row.Cells[index].Value as string).Trim().ToUpper();
                   
                    var errors = this.dataGridViewParameters.Rows.Cast<DataGridViewRow>().Where(r => r.Cells[index].Value != null && (r.Cells[index].Value as string).Trim().ToUpper() == name);
                    if (errors.Count() == 1)
                        row.Cells[index].ErrorText = string.Empty;
                    else
                        bErrorExists = true;
                }
            }
            return bErrorExists;
        }

        private void dataGridViewParameters_CellValueChanged(object sender, DataGridViewCellEventArgs e)
        {
            this.ClearErrorText(this.ColumnName.Index);  

            string name = this.dataGridViewParameters.Rows[e.RowIndex].Cells[this.ColumnName.Index].Value as string;
            string typename = this.dataGridViewParameters.Rows[e.RowIndex].Cells[this.ColumnType.Index].Value as string;

            if (e.RowIndex >= 0 && e.ColumnIndex == this.ColumnName.Index)
            {           
                if (string.IsNullOrEmpty(name) == false && string.IsNullOrWhiteSpace(name) == false)
                {
                    this.dataGridViewParameters.Rows[e.RowIndex].Cells[e.ColumnIndex].Value = name.Trim();
                    name = this.dataGridViewParameters.Rows[e.RowIndex].Cells[e.ColumnIndex].Value as string;
                    if (name.IndexOf(' ') > 0)
                    {
                        this.dataGridViewParameters.Rows[e.RowIndex].Cells[e.ColumnIndex].ErrorText = "Wrong name";
                        this.buttonOK.Enabled = false;
                    }
                    else
                    {                      
                        var row = this.dataGridViewParameters.Rows.Cast<DataGridViewRow>().Where(r => r.Cells[this.ColumnName.Name].Value != null && (r.Cells[this.ColumnName.Name].Value as string).Trim().ToUpper() == name.ToUpper());
                        this.dataGridViewParameters.Rows[e.RowIndex].Cells[e.ColumnIndex].ErrorText = row.Count() == 1 ? string.Empty : "The name must be unique";
                        this.buttonOK.Enabled = row.Count() == 1;
                    }
                }
                else
                {
                    this.dataGridViewParameters.Rows[e.RowIndex].Cells[e.ColumnIndex].ErrorText = "Empty name";
                    this.buttonOK.Enabled = false;
                }
            }
            else if (string.IsNullOrEmpty(name) || string.IsNullOrWhiteSpace(name))
            {
                this.dataGridViewParameters.Rows[e.RowIndex].Cells[this.ColumnName.Index].ErrorText = "Empty name";
                this.buttonOK.Enabled = false;
            }

            if (string.IsNullOrEmpty(typename))
                this.dataGridViewParameters.Rows[e.RowIndex].Cells[this.ColumnType.Index].Value = "String";
          
        }

        private void dataGridViewParameters_DataError(object sender, DataGridViewDataErrorEventArgs e)
        {
            this.buttonOK.Enabled = false;       
        }

        private void dataGridViewParameters_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
        {          
            if (e.Control is ComboBox)
            {
                ComboBox combo = e.Control as ComboBox;
                combo.SelectedIndexChanged -= new EventHandler(ComboBox_SelectedIndexChanged);
                combo.SelectedIndexChanged += new EventHandler(ComboBox_SelectedIndexChanged);
            }
        }

        private void ComboBox_SelectedIndexChanged(object sender, EventArgs e)
        {
            string newType = ((DataGridViewComboBoxEditingControl)sender).SelectedItem as string;
            
             //change ValueType
            var row = this.dataGridViewParameters.Rows[this.dataGridViewParameters.SelectedCells[0].RowIndex];
            var cellValue = row.Cells[this.ColumnValue.Name];
            cellValue.ValueType = Type.GetType(newType.IndexOf('.') > 0 ? newType : "System." + newType);
            cellValue.Value = this.DefaultValue(cellValue.ValueType);
            this.dataGridViewParameters.Refresh();
        }

        public object DefaultValue(Type type)
        {
            if (type == typeof(string))
                return string.Empty;
            if(type == typeof(DateTime))
                return DateTime.Now;
            if(type == typeof(System.Xml.Linq.XElement))
                return "<root/>";
            return Activator.CreateInstance(type);
        }

        private void dataGridViewParameters_RowsAdded(object sender, DataGridViewRowsAddedEventArgs e)
        {
            this.buttonOK.Enabled = !ClearErrorText(this.ColumnName.Index);
        }

        private void dataGridViewParameters_RowsRemoved(object sender, DataGridViewRowsRemovedEventArgs e)
        {
            this.buttonOK.Enabled = !ClearErrorText(this.ColumnName.Index);
        }

        private void dataGridViewParameters_RowLeave(object sender, DataGridViewCellEventArgs e)
        {

        }
    }
}