private void Populate()
        {
            foreach (LabelX label in Labels)
                panelEx1.Controls.Remove(label);

            foreach (ComboBoxEx combo in ComboBoxes)
                panelEx1.Controls.Remove(combo);

            Labels.Clear();
            ComboBoxes.Clear();
            textBoxComponentName.Text = "";

            //labelComponentName.Text = string.Format("{0} fields", ComponentSpecification.Name);
            labelComponentName.Text = "Component fields";

            if (Entity == null)
            {
                pictureComponent.Visible = false;
                labelComponentName.Visible = false;
                pictureEntity.Visible = false;
                //labelColumns.Visible = false;
                labelColumns.Left = Gap;
                labelColumns.Text = "Select entity:";
                comboBoxExEntities.Left = labelColumns.Right + Gap;
                comboBoxExEntities.Visible = true;
                comboBoxExEntities.DisplayMember = "Name";
                comboBoxExEntities.Items.Clear();
                comboBoxExEntities.Items.AddRange(ComponentSpecification.EntitySet.Entities.ToArray());
                comboBoxExEntities.Top = Gap;// pictureBox1.Bottom + Gap;// labelColumns.Top;
                labelColumns.Top = comboBoxExEntities.Top;
                textBoxComponentName.Text = "";
                textBoxComponentName.Visible = false;
                labelComponentNameInput.Visible = false;
                int newWidth = comboBoxExEntities.Right + Gap;

                if (this.Width != newWidth)
                    this.Left = this.Left - (this.Width - newWidth);

                this.Width = newWidth;
            }
            else
            {
                textBoxComponentName.Visible = true;
                labelComponentNameInput.Visible = true;
                pictureComponent.Visible = true;
                labelComponentName.Visible = true;
                pictureEntity.Visible = true;
                labelColumns.Top = pictureEntity.Top;
                labelColumns.Visible = true;
                comboBoxExEntities.Visible = false;
                labelColumns.Text = "Mapped columns";

                //if (string.IsNullOrEmpty(textBoxComponentName.Text))
                //    textBoxComponentName.Text = "Not set";
            }
            if (ComponentSpecification != null)
            {
                comboBoxComponents.Visible = false;
                labelSelect.Visible = false;
                textBoxComponentName.Top = Gap;
                labelComponentNameInput.Top = Gap;

                ArchAngel.Providers.EntityModel.Model.EntityLayer.Component component = ComponentSpecification.GetImplementationFor(Entity);

                if (component != null)
                    textBoxComponentName.Text = component.Name;
            }
            else
            {
                comboBoxComponents.DisplayMember = "Name";

                foreach (var comp in Entity.EntitySet.ComponentSpecifications)
                    comboBoxComponents.Items.Add(comp);

                //if (comboBoxComponents.Items.Count > 0)
                //    comboBoxComponents.SelectedIndex = 0;

                comboBoxComponents.Top = Gap;
                labelSelect.Top = Gap;
                textBoxComponentName.Top = comboBoxComponents.Bottom + Gap * 3;
                labelComponentNameInput.Top = textBoxComponentName.Top;
            }

            int top = labelComponentName.Bottom + Gap * 2;

            if (Entity != null)
            {
                if (ComponentSpecification != null)
                {
                    foreach (var prop in ComponentSpecification.Properties)
                        Labels.Add(new LabelX() { Text = string.Format("{0}  [{1}]", prop.Name, prop.Type) });

                    ArchAngel.Providers.EntityModel.Model.EntityLayer.Component component = ComponentSpecification.GetImplementationFor(Entity);
                    int numTables = Entity.MappedTables().Count();

                    if (component != null)
                    {
                        foreach (var prop in component.Properties)
                        {
                            List<Column> columns = GetColumnsOfType(Entity, prop.RepresentedProperty.Type);
                            ComboBoxEx combo = new ComboBoxEx();
                            combo.Width = 200;

                            foreach (Column column in columns)
                            {
                                if (numTables > 1)
                                    combo.Items.Add(string.Format("{0}.{1}  [{2}]", column.Parent.Name, column.Name, column.OriginalDataType));
                                else
                                    combo.Items.Add(string.Format("{0}  [{1}]", column.Name, column.OriginalDataType));
                            }
                            combo.DropDownStyle = ComboBoxStyle.DropDownList;
                            IColumn col = prop.MappedColumn();

                            if (col != null)
                            {
                                if (numTables > 1)
                                    combo.SelectedItem = string.Format("{0}.{1}  [{2}]", col.Parent.Name, col.Name, col.OriginalDataType);
                                else
                                    combo.SelectedItem = string.Format("{0}  [{1}]", col.Name, col.OriginalDataType);
                            }
                            ComboBoxes.Add(combo);
                        }
                    }
                    else
                    {
                        // Get the properties of the component specification
                        foreach (var prop in ComponentSpecification.Properties)
                        {
                            List<Column> columns = GetColumnsOfType(Entity, prop.Type);
                            ComboBoxEx combo = new ComboBoxEx();
                            combo.Width = 200;

                            foreach (Column column in columns)
                            {
                                if (numTables > 1)
                                    combo.Items.Add(string.Format("{0}.{1}  [{2}]", column.Parent.Name, column.Name, column.OriginalDataType));
                                else
                                    combo.Items.Add(string.Format("{0}  [{1}]", column.Name, column.OriginalDataType));
                            }
                            combo.DropDownStyle = ComboBoxStyle.DropDownList;
                            ComboBoxes.Add(combo);
                        }
                    }
                }

                int maxLeftColumnWidth = Math.Max(GetWidestLabel(Labels), Gap + pictureComponent.Width + labelComponentName.Width);
                int maxRightColumnWidth = Math.Max(GetWidestComboBox(ComboBoxes), pictureEntity.Width + labelColumns.Width + Gap);
                Graphics labelGraphics = null;

                if (ComponentSpecification != null)
                {
                    for (int i = 0; i < ComponentSpecification.Properties.Count; i++)
                    {
                        LabelX label = Labels[i];
                        panelEx1.Controls.Add(label);
                        //label.BackColor = Color.Transparent;
                        //label.ForeColor = Color.White;
                        if (labelGraphics == null)
                            labelGraphics = Graphics.FromHwnd(label.Handle);

                        SizeF size = Graphics.FromHwnd(label.Handle).MeasureString(label.Text, label.Font);
                        label.Height = Convert.ToInt32(size.Height) + 1;
                        label.Width = Convert.ToInt32(size.Width) + 1;
                        label.Top = top;
                        label.Left = Math.Max(Gap, Gap + maxLeftColumnWidth - label.Width);
                        label.BringToFront();

                        if (Entity != null)
                        {
                            ComboBoxEx comboBox = ComboBoxes[i];
                            panelEx1.Controls.Add(comboBox);
                            comboBox.Top = top;
                            comboBox.Left = Gap * 10 + maxLeftColumnWidth + 60;
                            comboBox.Width = maxRightColumnWidth;
                            comboBox.BringToFront();

                            label.Top = top + comboBox.Height / 2 - label.Height / 2;
                            top += comboBox.Height + 2;
                        }
                        else
                            top += label.Height + 2;
                    }
                }

                pictureComponent.Left = Gap;
                labelComponentName.Left = pictureComponent.Right;
                pictureEntity.Left = Gap * 10 + maxLeftColumnWidth + 60;
                labelColumns.Left = pictureEntity.Right;
                comboBoxExEntities.Left = pictureEntity.Right;
                comboBoxExEntities.Top = labelColumns.Top;
                int newWidth = Gap * 10 + maxLeftColumnWidth + 60 + maxRightColumnWidth + Gap * 3;

                if (this.Width != newWidth)
                    this.Left = this.Left - (this.Width - newWidth);

                this.Width = newWidth;
            }
            this.Height = top + Gap * 15 + buttonOk.Height;
        }