private bool DeleteVocabulary(ESPVocabulary cls)
{
if (null == cls)
{
return(false);
}
try
{
var curVocabularies = DB.ChangeTracker.Entries <ESPVocabulary>();
var curVocab = curVocabularies.Where(e => e.Entity.Name == cls.Name).Select(e => e.Entity).FirstOrDefault();
if (null != curVocab)
{
DB.Vocabularies.Remove(curVocab);
DB.SaveChanges();
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
return(false);
}
return(true);
}
private bool SaveVocabulary(ESPVocabulary vocabulary)
{
try
{
if (Mode == EditorMode.AddNew)
{
DB.Vocabularies.Add(vocabulary);
}
else
{
var curVocabularies = DB.ChangeTracker.Entries <ESPVocabulary>();
var curVocab = curVocabularies.Where(e => e.Entity.Name == vocabulary.Name).Select(e => e.Entity).FirstOrDefault();
if (null != curVocab)
{
curVocab.Name = curVocab.Name;
}
}
DB.SaveChanges();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
return(false);
}
return(true);
}
private void btnVocab_Save_Click(object sender, EventArgs e)
{
ESPVocabulary vocab = new ESPVocabulary(txtVocabName.Text);
if (Mode == EditorMode.Edit)
{
MessageBox.Show("Invalid edit mode.");
return;
}
if (!ValidateVocabulary(vocab))
{
txtVocabName.Focus();
return;
}
if (!SaveVocabulary(vocab))
{
return;
}
MessageBox.Show("Saved!", "Vocabulary information", MessageBoxButtons.OK, MessageBoxIcon.Information);
Mode = EditorMode.None;
btnVocab_Save.Enabled = false;
txtVocabName.ReadOnly = (Mode == EditorMode.None);
LoadVocabularies();
btnVocab_New.Focus();
}
private bool ValidateVocabulary(ESPVocabulary vocabulary)
{
if ((vocabulary == null) || (vocabulary.Name == string.Empty))
{
MessageBox.Show("Invalid information.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return(false);
}
if (Mode == EditorMode.AddNew)
{
var existingVocab = DB.Vocabularies.Where(e => e.Name == vocabulary.Name).FirstOrDefault();
if (null != existingVocab)
{
MessageBox.Show("Already exist.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return(false);
}
}
return(true);
}
private void lbVocabularies_KeyDown(object sender, KeyEventArgs e)
{
switch (e.KeyCode)
{
case Keys.Delete:
{
if (null == lbVocabularies.SelectedItems)
{
return;
}
bool bChanged = false;
foreach (var obj in lbVocabularies.SelectedItems)
{
ESPVocabulary vocab = obj as ESPVocabulary;
if (DeleteVocabulary(vocab))
{
bChanged = true;
}
}
if (!bChanged)
{
return;
}
Mode = EditorMode.None;
btnVocab_Save.Enabled = false;
txtVocabName.ReadOnly = (Mode == EditorMode.None);
LoadVocabularies();
}
break;
default:
break;
}
}
private void lbVocabularies_SelectedIndexChanged(object sender, EventArgs e)
{
Mode = EditorMode.None;
txtVocabName.Text = string.Empty;
txtVocabName.ReadOnly = (Mode == EditorMode.None);
btnVocab_Save.Enabled = false;
if (null == lbVocabularies.SelectedItem)
{
return;
}
ESPVocabulary vocabulary = lbVocabularies.SelectedItem as ESPVocabulary;
if (null == vocabulary)
{
return;
}
txtVocabName.Text = vocabulary.Name;
}
