public ICollection GetAllBooks()
{
DataTable dataTable = new DataTable();
DataRow dataRow;
DataColumn dataColumnIndex = new DataColumn();
dataColumnIndex.DataType = typeof(String);
dataColumnIndex.AutoIncrement = true;
dataColumnIndex.AutoIncrementSeed = 1;
dataColumnIndex.AutoIncrementStep = 1;
dataColumnIndex.ColumnName = "Num";
dataTable.Columns.Add(dataColumnIndex);
dataTable.Columns.Add(new DataColumn("ID", typeof(String)));
dataTable.Columns.Add(new DataColumn("Name", typeof(String)));
dataTable.Columns.Add(new DataColumn("Author", typeof(String)));
dataTable.Columns.Add(new DataColumn("Year", typeof(int)));
dataTable.Columns.Add(new DataColumn("Price ($)", typeof(String)));
dataTable.Columns.Add(new DataColumn("Stock", typeof(int)));
String[] readerBooks = ReadLines().ToArray();
Debug.WriteLine(readerBooks);
String[] delimiters =
{
",",
"\r\n"
};
for (int i = 0; i < readerBooks.GetLength(0); i++)
{
String[] arrayBooks = readerBooks[i].Split(delimiters,
StringSplitOptions.RemoveEmptyEntries)
.Select(Book => Book.Trim())
.ToArray();
Debug.WriteLine(arrayBooks);
dataRow = dataTable.NewRow();
for (int j = 0; j < arrayBooks.GetLength(0); j++)
{
dataRow[j + 1] = arrayBooks[j]; // j+1 because index is pre-defined.
}
dataTable.Rows.Add(dataRow);
}
DataView dataView = new DataView(dataTable);
return(dataView);
}
public Boolean addBook(String[] newBook)
{
Book thisBook = createBook(newBook, 0);
bool isUpdatedBookStock = true;
try
{
String[] readerBooks = ReadLines().ToArray();
String[] delimiters =
{
",",
"\r\n"
};
for (int i = 0; i < readerBooks.GetLength(0); i++)
{
String[] arrayBooks = readerBooks[i].Split(delimiters,
StringSplitOptions.RemoveEmptyEntries)
.Select(Book => Book.Trim())
.ToArray();
if (arrayBooks[0] == thisBook.ID)
{
int newStock = thisBook.stock;
int oldStock = int.Parse(arrayBooks[5]);
int updatedStock = oldStock + newStock;
updateRecord(thisBook, updatedStock);
isUpdatedBookStock = true;
return(true);
}
}
}
catch (Exception Ex)
{
throw new FaultException <Exception>(new Exception(Ex.Message));
}
if (isUpdatedBookStock)
{
AddNewRecord(thisBook);
return(true);
}
return(false);
}
public ICollection searchBook(string type, string input)
{
DataTable dataTable = new DataTable();
DataRow dataRow;
DataColumn dataColumnIndex = new DataColumn();
dataColumnIndex.DataType = typeof(String);
dataColumnIndex.AutoIncrement = true;
dataColumnIndex.AutoIncrementSeed = 1;
dataColumnIndex.AutoIncrementStep = 1;
dataColumnIndex.ColumnName = "Num";
dataTable.Columns.Add(dataColumnIndex);
dataTable.Columns.Add(new DataColumn("ID", typeof(String)));
dataTable.Columns.Add(new DataColumn("Name", typeof(String)));
dataTable.Columns.Add(new DataColumn("Author", typeof(String)));
dataTable.Columns.Add(new DataColumn("Year", typeof(int)));
dataTable.Columns.Add(new DataColumn("Price ($)", typeof(String)));
dataTable.Columns.Add(new DataColumn("Stock", typeof(int)));
String[] readerBooks = ReadLines().ToArray();
String[] delimiters =
{
",",
"\r\n"
};
for (int i = 0; i < readerBooks.GetLength(0); i++)
{
String[] arrayBooks = readerBooks[i].Split(delimiters,
StringSplitOptions.RemoveEmptyEntries)
.Select(Book => Book.Trim())
.ToArray();
if (String.IsNullOrWhiteSpace(input))
{
throw new NullReferenceException("Input is empty.");
}
else if (type.Equals("Year") && !IsYear(input))
{
throw new ArgumentException("Input is not a valid year.");
}
else if (type.Equals("Year") && !IsPositive(int.Parse(input)))
{
throw new FormatException("Year must be a valid positive integer. Input: " + input);
}
else
{
switch (type)
{
case "ID":
try
{
if (arrayBooks[0].Equals(input))
{
dataRow = dataTable.NewRow();
for (int j = 0; j < arrayBooks.GetLength(0); j++)
{
dataRow[j + 1] = arrayBooks[j]; // j+1 because index is pre-defined.
}
dataTable.Rows.Add(dataRow);
}
}
catch (Exception Ex)
{
throw new FaultException <Exception>(new Exception(Ex.Message));
}
break;
case "Name":
try
{
if (arrayBooks[1].ToLower().Contains(input.ToLower()))
{
dataRow = dataTable.NewRow();
for (int j = 0; j < arrayBooks.GetLength(0); j++)
{
dataRow[j + 1] = arrayBooks[j]; // j+1 because index is pre-defined.
}
dataTable.Rows.Add(dataRow);
}
}
catch (Exception Ex)
{
throw new FaultException <Exception>(new Exception(Ex.Message));
}
break;
case "Author":
try
{
if (arrayBooks[2].ToLower().Contains(input.ToLower()))
{
dataRow = dataTable.NewRow();
for (int j = 0; j < arrayBooks.GetLength(0); j++)
{
dataRow[j + 1] = arrayBooks[j]; // j+1 because index is pre-defined.
}
dataTable.Rows.Add(dataRow);
}
}
catch (Exception Ex)
{
throw new FaultException <Exception>(new Exception(Ex.Message));
}
break;
case "Year":
try
{
if (int.Parse(arrayBooks[3]).Equals(int.Parse(input)))
{
dataRow = dataTable.NewRow();
for (int j = 0; j < arrayBooks.GetLength(0); j++)
{
dataRow[j + 1] = arrayBooks[j]; // j+1 because index is pre-defined.
}
dataTable.Rows.Add(dataRow);
}
}
catch (Exception Ex)
{
throw new FaultException <Exception>(new Exception(Ex.Message));
}
break;
default:
break;
}
}
}
DataView dataView = new DataView(dataTable);
return(dataView);
}