private void btnCancel_Click(object sender, System.EventArgs e)
{
this.Close();
this.Dispose();
Actions act = new Actions();
act.ShowDialog();
}
private void btnSave_Click(object sender, System.EventArgs e)
{
if(txtOld.Text.Equals("") || txtNew.Text.Equals("") || txtConfirm.Text.Equals(""))
{
MessageBox.Show("All required data is not entered by you.","Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
return;
}
if(txtOld.Text != Globals.Password)
{
MessageBox.Show("Old password entered is not correct","Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
return;
}
if(txtNew.Text != txtConfirm.Text)
{
MessageBox.Show("Password confirmation is not correct","Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
return;
}
bool isSuccess = false;
try
{
isSuccess = Globals.ChangePassword(Globals.UserName,txtNew.Text);
}
catch(Exception ex)
{
MessageBox.Show(ex.Message.ToString(),"Library Management",MessageBoxButtons.OK,MessageBoxIcon.Error);
this.Close();
this.Dispose();
Application.Exit();
return;
}
if(isSuccess)
{
Globals.Password = txtNew.Text;
MessageBox.Show("Password Changed","Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
this.Close();
this.Dispose();
Actions act = new Actions();
act.ShowDialog();
}
}
private void btnLogin_Click(object sender, System.EventArgs e)
{
if(txtuser.Text.Equals(""))
{
MessageBox.Show("Please Enter User Name","Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
return;
}
if(txtpwd.Text.Equals(""))
{
MessageBox.Show("Please Enter Password","Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
return;
}
bool IsSuccesfulLogin = false;
try
{
// Validates User
IsSuccesfulLogin = Globals.ValidateId(txtuser.Text,txtpwd.Text);
}
catch(Exception ex)
{
MessageBox.Show(ex.Message.ToString(),"Library Management",MessageBoxButtons.OK,MessageBoxIcon.Error);
this.Close();
this.Dispose();
Application.Exit();
return;
}
if(!IsSuccesfulLogin)
{
MessageBox.Show("Please Enter Valid User Name/Password Combination","Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
txtpwd.Text = "";
txtuser.Text = "";
txtuser.Focus();
return;
}
else
{
Globals.UserName = txtuser.Text;
Globals.Password = txtpwd.Text;
// Launch Action Form
this.Close();
this.Dispose();
Actions act = new Actions();
act.ShowDialog();
}
}
private void btnRegister_Click(object sender, System.EventArgs e)
{
if(txtuser.Text.Equals(""))
{
MessageBox.Show("Please Enter User Name","Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
return;
}
if(txtpwd.Text.Equals(""))
{
MessageBox.Show("Please Enter Password","Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
return;
}
if(txtConfirm.Text.Equals(""))
{
MessageBox.Show("Please Confirm Password","Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
return;
}
if(!txtConfirm.Text.Equals(txtpwd.Text))
{
MessageBox.Show("Password not confirmed","Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
return;
}
bool IsSuccesfulRegister = false;
try
{
IsSuccesfulRegister = Globals.RegisterUser(txtuser.Text,txtpwd.Text);;
}
catch(Exception ex)
{
MessageBox.Show(ex.Message.ToString(),"Library Management",MessageBoxButtons.OK,MessageBoxIcon.Error);
this.Close();
this.Dispose();
Application.Exit();
return;
}
if(!IsSuccesfulRegister)
{
MessageBox.Show("This user already exists. Please enter some other user name","Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
txtuser.Text = "";
txtpwd.Text = "";
txtConfirm.Text = "";
txtuser.Focus();
return;
}
else
{
MessageBox.Show("User succesfully registered.","Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
Globals.UsersList.Add(txtuser.Text,0);
Globals.UserName = txtuser.Text;
Globals.Password = txtpwd.Text;
Globals.isSystemUser = false;
this.Close();
this.Dispose();
Actions act = new Actions();
act.ShowDialog();
}
}
private void btnAdd_Click(object sender, System.EventArgs e)
{
if(txtCatName.Text.Equals(""))
{
MessageBox.Show("Please Enter a category ","Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
return;
}
bool isSuccesfulAddition = false;
try
{
isSuccesfulAddition = Globals.AddCategory(txtCatName.Text);
}
catch(Exception ex)
{
MessageBox.Show(ex.Message.ToString(),"Library Management",MessageBoxButtons.OK,MessageBoxIcon.Error);
this.Close();
this.Dispose();
Application.Exit();
return;
}
if(!isSuccesfulAddition)
{
MessageBox.Show("This category already exists. Please enter some other category","Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
return;
}
else
{
MessageBox.Show("Category succesfully entered.","Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
Globals.CategoryList.Add(Globals.CategoryList.Count + 1, txtCatName.Text);
this.Close();
this.Dispose();
Actions act = new Actions();
act.ShowDialog();
}
}
private void btnRemove_Click(object sender, System.EventArgs e)
{
if(cmbRemoveBook.Items.Count == 0)
{
MessageBox.Show("No books available to be removed","Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
return;
}
if(txtRemQty.Text.Equals(""))
{
MessageBox.Show("Please Enter Quantity of books in numeric format","Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
return;
}
else
{
bool isNumber = isNumeric(txtRemQty.Text, System.Globalization.NumberStyles.Integer);
if(!isNumber)
{
MessageBox.Show("Please Enter Quantity of books in numeric format","Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
return;
}
}
if(Convert.ToInt32(txtRemQty.Text) > Convert.ToInt32(txtAvailQty.Text))
{
MessageBox.Show("Quantity of books to be removed should be less than available quantity","Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
return;
}
bool IsSucessFulRemove = false;
try
{
IsSucessFulRemove = Globals.RemoveBook(cmbRemoveBook.SelectedItem.ToString(),Convert.ToInt32(txtRemQty.Text),txtViewAuthor.Text,txtViewCat.Text);
}
catch(Exception ex)
{
MessageBox.Show(ex.Message.ToString(),"Library Management",MessageBoxButtons.OK,MessageBoxIcon.Error);
this.Close();
this.Dispose();
Application.Exit();
return;
}
if(!IsSucessFulRemove)
{
MessageBox.Show("Please check the book data entered","Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
return;
}
else
{
MessageBox.Show("Book(s) succesfully removed.","Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
// Launch Action Form
int BooksLeft = Convert.ToInt32(txtAvailQty.Text) - Convert.ToInt32(txtRemQty.Text);
if(BooksLeft == 0)
Globals.BookList.Remove(cmbRemoveBook.SelectedItem.ToString() + "~" + txtViewAuthor.Text + "#" + txtViewCat.Text);
else
Globals.BookList[cmbRemoveBook.SelectedItem.ToString() + "~" + txtViewAuthor.Text + "#" + txtViewCat.Text] = BooksLeft;
this.Close();
this.Dispose();
Actions act = new Actions();
act.ShowDialog();
}
}
private void btnAdd_Click(object sender, System.EventArgs e)
{
if(txtTitle.Text.Equals(""))
{
MessageBox.Show("Please Enter Book Title","Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
return;
}
if(txtAuthor.Text.Equals(""))
{
MessageBox.Show("Please Enter Author Name","Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
return;
}
if(txtQty.Text.Equals(""))
{
MessageBox.Show("Please Enter Quantity of books in numeric format","Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
return;
}
else
{
bool isNumber = isNumeric(txtQty.Text, System.Globalization.NumberStyles.Integer);
if(!isNumber)
{
MessageBox.Show("Please Enter Quantity of books in numeric format","Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
return;
}
}
bool IsSuccesfulAdd = false;
bool isNewEntry = true;
try
{
int iCatId = 0;
if(Globals.CategoryList!=null && Globals.CategoryList.Count > 0)
{
IDictionaryEnumerator myEnumerator = Globals.CategoryList.GetEnumerator();
while ( myEnumerator.MoveNext() )
{
if(cmbCat.SelectedItem.Equals(myEnumerator.Value))
{
iCatId = Convert.ToInt32(myEnumerator.Key);
break;
}
}
}
else
{
MessageBox.Show("Please add a category first","Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
return;
}
IsSuccesfulAdd = Globals.AddBook(txtTitle.Text,txtAuthor.Text,iCatId,Convert.ToInt32(txtQty.Text),ref isNewEntry);
}
catch(Exception ex)
{
MessageBox.Show(ex.Message.ToString(),"Library Management",MessageBoxButtons.OK,MessageBoxIcon.Error);
this.Close();
this.Dispose();
Application.Exit();
return;
}
if(!IsSuccesfulAdd)
{
MessageBox.Show("Please check the book data entered","Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
return;
}
else
{
MessageBox.Show("Book(s) succesfully added.","Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
// Launch Action Form
if(Globals.BookList.ContainsKey(txtTitle.Text + "~" + txtAuthor.Text + "#" + cmbCat.SelectedItem.ToString()))
Globals.BookList[txtTitle.Text + "~" + txtAuthor.Text + "#" + cmbCat.SelectedItem.ToString()] = Convert.ToInt32(Globals.BookList[txtTitle.Text + "~" + txtAuthor.Text + "#" + cmbCat.SelectedItem.ToString()]) + Convert.ToInt32(txtQty.Text);
else
{
Globals.BookList.Add(txtTitle.Text + "~" + txtAuthor.Text + "#" + cmbCat.SelectedItem.ToString(),txtQty.Text);
}
this.Close();
this.Dispose();
Actions act = new Actions();
act.ShowDialog();
}
}
private void btnreturn_Click(object sender, System.EventArgs e)
{
bool IsSuccess=false;
try
{
string selIndex = cmbreturn.SelectedIndex.ToString();
string BookIssueId= "";
string BookId= "";
string SelectedIds= "";
int Bookindex = -1;
IDictionaryEnumerator myEnumerator = IDTable.GetEnumerator();
while(myEnumerator.MoveNext())
{
if (selIndex.Equals(myEnumerator.Key.ToString()))
{
SelectedIds = myEnumerator.Value.ToString();
break;
}
}
Bookindex = SelectedIds.IndexOf("~");
if(Bookindex!=-1)
{
BookId = SelectedIds.Substring(0,Bookindex);
BookIssueId = SelectedIds.Substring(Bookindex + 1, SelectedIds.Length - (Bookindex + 1));
}
IsSuccess = Globals.ReturnBook(Convert.ToInt32(BookId),Convert.ToInt32(BookIssueId));
}
catch(Exception ex)
{
MessageBox.Show(ex.Message.ToString(),"Library Management",MessageBoxButtons.OK,MessageBoxIcon.Error);
this.Close();
this.Dispose();
Application.Exit();
return;
}
if(!IsSuccess)
{
MessageBox.Show("Some error has occured","Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
return;
}
else
{
MessageBox.Show("Book Returned Succesfully.","Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
Globals.UsersList[Globals.UserName] = Convert.ToInt32(Globals.UsersList[Globals.UserName]) - 1;
Globals.BookList[cmbreturn.SelectedItem.ToString() + "~" + txtAuthor.Text + "#" + txtCat.Text] =
Convert.ToInt32(Globals.BookList[cmbreturn.SelectedItem.ToString() + "~" + txtAuthor.Text + "#" + txtCat.Text]) + 1;
this.Close();
this.Dispose();
Actions act = new Actions();
act.ShowDialog();
}
}
private void btnIssue_Click(object sender, System.EventArgs e)
{
if(Convert.ToInt32(Globals.UsersList[Globals.UserName]) == Globals.NUMBER_OF_BOOKS_ALLOWED)
{
MessageBox.Show("You already have 3 books issued. Please return one of them to get requested book issued" ,"Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
return;
}
DialogResult dr = MessageBox.Show("You have requested for book " + dataGrid1[SelecetedBook,0] + " authored by " + dataGrid1[SelecetedBook,1] + ". Are you sure you want this book?","Library Management",MessageBoxButtons.YesNo);
if(dr == DialogResult.No)
return;
bool IsSuccess = false;
try
{
if(!Globals.ValidateBook(dataGrid1[SelecetedBook,0].ToString(),dataGrid1[SelecetedBook,1].ToString(),dataGrid1[SelecetedBook,3].ToString()))
{
MessageBox.Show("Selected book is already issued to you","Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
return;
}
IsSuccess = Globals.IssueBook(dataGrid1[SelecetedBook,0].ToString(),dataGrid1[SelecetedBook,1].ToString(),dataGrid1[SelecetedBook,3].ToString());
}
catch(Exception ex)
{
MessageBox.Show(ex.Message.ToString(),"Library Management",MessageBoxButtons.OK,MessageBoxIcon.Error);
this.Close();
this.Dispose();
Application.Exit();
return;
}
if(!IsSuccess)
{
MessageBox.Show("Some error has occured","Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
return;
}
else
{
MessageBox.Show("Book Issued Succesfully.","Library Management",MessageBoxButtons.OK,MessageBoxIcon.Information);
Globals.UsersList[Globals.UserName] = Convert.ToInt32(Globals.UsersList[Globals.UserName]) + 1;
Globals.BookList[dataGrid1[SelecetedBook,0].ToString() + "~" + dataGrid1[SelecetedBook,1].ToString() + "#" + dataGrid1[SelecetedBook,3].ToString()] =
Convert.ToInt32(Globals.BookList[dataGrid1[SelecetedBook,0].ToString() + "~" + dataGrid1[SelecetedBook,1].ToString() + "#" + dataGrid1[SelecetedBook,3].ToString()]) - 1;
this.Close();
this.Dispose();
Actions act = new Actions();
act.ShowDialog();
}
}
