private void cbCategories_SelectedIndexChanged(object sender, EventArgs e)
{
HierachicalName = string.Empty;
if (null != cbCategories.SelectedItem)
{
ESPCategory category = cbCategories.SelectedItem as ESPCategory;
if (null == category)
{
return;
}
HierachicalName = category.Name;
}
if (HierachicalName != string.Empty)
{
txtCategoryName.Text = HierachicalName + "-" + RemoveTone(txtCategoryTitle.Text);
}
else
{
txtCategoryName.Text = RemoveTone(txtCategoryTitle.Text);
}
if (Mode != EditorMode.None)
{
btnCategory_Save.Enabled = (txtCategoryName.Text.Length > 0 ||
txtCategoryTitle.Text.Length > 0);
}
}
private bool SaveCategory(ESPCategory category)
{
try
{
if (Mode == EditorMode.AddNew)
{
DB.Categories.Add(category);
}
else
{
var curCats = DB.ChangeTracker.Entries <ESPCategory>();
var curCat = curCats.Where(e => e.Entity.Id == category.Id).Select(e => e.Entity).FirstOrDefault();
if (null != curCat)
{
curCat.Name = category.Name;
curCat.Title = category.Title;
curCat.Parent = category.Parent;
}
}
DB.SaveChanges();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
return(false);
}
return(true);
}
private bool DeleteCategory(ESPCategory category)
{
if (null == category)
{
return(false);
}
try
{
var curCats = DB.ChangeTracker.Entries <ESPCategory>();
var curCat = curCats.Where(e => e.Entity.Name == category.Name).Select(e => e.Entity).FirstOrDefault();
if (null != curCat)
{
DB.Categories.Remove(curCat);
DB.SaveChanges();
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
return(false);
}
return(true);
}
private bool LoadCategoriesOfParent(ESPCategory parentobj, IQueryable <ESPCategory> categories, ref int level)
{
int item = -1;
level += 4;
foreach (var cat in categories)
{
cat.DisplayName = (new string(' ', level)) + cat.Title;
cat.ParentObject = parentobj;
item = cbCategories.Items.Add(cat);
item = lbCategories.Items.Add(cat);
var categories2 = DB.Categories.Where(e => e.Parent == cat.Id).OrderBy(e => e.Name);
LoadCategoriesOfParent(cat, categories2, ref level);
}
level -= 4;
return(true);
}
private void lbCategories_KeyDown(object sender, KeyEventArgs e)
{
switch (e.KeyCode)
{
case Keys.Delete:
{
if (null == lbCategories.SelectedItems)
{
return;
}
bool bChanged = false;
foreach (var obj in lbCategories.SelectedItems)
{
ESPCategory category = obj as ESPCategory;
if (DeleteCategory(category))
{
bChanged = true;
}
}
if (!bChanged)
{
return;
}
Mode = EditorMode.None;
btnCategory_Save.Enabled = false;
cbCategories.SelectedIndex = -1;
txtCategoryName.ReadOnly = (Mode == EditorMode.None);
txtCategoryTitle.ReadOnly = (Mode == EditorMode.None);
LoadCategories();
}
break;
default:
break;
}
}
private void btnCategory_Save_Click(object sender, EventArgs e)
{
long parentid = 0;
ESPCategory parentCategory = cbCategories.SelectedItem as ESPCategory;
if (null != parentCategory)
{
parentid = parentCategory.Id;
}
ESPCategory category = new ESPCategory(txtCategoryName.Text, txtCategoryTitle.Text, parentid);
if (Mode == EditorMode.Edit)
{
category.Id = long.Parse(txtCategoryID.Text);
}
if (!ValidateCategory(category))
{
txtCategoryTitle.Focus();
return;
}
if (!SaveCategory(category))
{
return;
}
MessageBox.Show("Saved!", "Category information", MessageBoxButtons.OK, MessageBoxIcon.Information);
Mode = EditorMode.None;
btnCategory_Save.Enabled = false;
txtCategoryName.ReadOnly = (Mode == EditorMode.None);
txtCategoryTitle.ReadOnly = (Mode == EditorMode.None);
cbCategories.Enabled = (Mode != EditorMode.None);
LoadCategories();
btnCategory_New.Focus();
}
private void lbCategories_SelectedIndexChanged(object sender, EventArgs e)
{
Mode = EditorMode.None;
btnCategory_Save.Enabled = false;
cbCategories.SelectedIndex = -1;
txtCategoryName.Text = string.Empty;
txtCategoryTitle.Text = string.Empty;
txtCategoryID.Text = "0";
txtCategoryName.ReadOnly = (Mode == EditorMode.None);
txtCategoryTitle.ReadOnly = (Mode == EditorMode.None);
cbCategories.Enabled = (Mode != EditorMode.None);
if (null == lbCategories.SelectedItem)
{
return;
}
ESPCategory selCat = lbCategories.SelectedItem as ESPCategory;
if (selCat == null)
{
return;
}
ESPCategory parentCat = selCat.ParentObject;
if (null != parentCat)
{
cbCategories.SelectedIndex = cbCategories.FindStringExact(parentCat.DisplayName);
}
txtCategoryID.Text = selCat.Id.ToString();
txtCategoryName.Text = selCat.Name;
txtCategoryTitle.Text = selCat.Title;
}
private bool ValidateCategory(ESPCategory category)
{
if ((category == null) || (category.Name == string.Empty))
{
MessageBox.Show("Invalid information.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return(false);
}
if (category.Id != 0)
{
if (category.Parent == category.Id)
{
MessageBox.Show("Invalid parent category.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return(false);
}
}
if (Mode == EditorMode.AddNew)
{
var cates = DB.Categories.Where(e => e.Name == category.Name /* || e.Title == category.Title*/).FirstOrDefault();
if (null != cates)
{
MessageBox.Show("Already exist.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return(false);
}
cates = DB.Categories.Where(e => e.Parent == category.Parent && (e.Name == category.Name || e.Title == category.Title)).FirstOrDefault();
if (null != cates)
{
MessageBox.Show("Duplicate children.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return(false);
}
}
return(true);
}
