My Portfolio

[object Object],Adding Adult to the LibraryFrom the windows project (phase II), button click method: The user is enters the new adult member’s information and presses the button to accept the information to be added. The form will ask the user to confirm the addition and then call the business layer’s method to add the adult.// Add clided, validate then add memberprivate void btnAdd_Click(object sender, EventArgs e){ // validate all controls on the form (this is known as thorough validation) if (!this.ValidateChildren(ValidationConstraints.Visible)) { // keep the dialog open if controls do not validate this.DialogResult = DialogResult.None; } else { string message = string.Format(
Add {0} {1} {2} as a member?
, txtFirstName.Text, txtMI.Text, txtLastName.Text); DialogResult myResult = MessageBox.Show(this, message,
Add adult member
, MessageBoxButtons.YesNo); if (myResult == DialogResult.Yes) { // Everything has been validated ErrorCode errCode; BusinessLayer bl = new BusinessLayer(); AdultMember myMember = new AdultMember(); // Assign member information myMember.FirstName = txtFirstName.Text; myMember.MiddleInitial = txtMI.Text; myMember.LastName = txtLastName.Text; myMember.Street = txtStreet.Text; myMember.City = txtCity.Text; myMember.State = cboState.SelectedValue.ToString(); myMember.ZipCode = txtZipCode.Text; myMember.PhoneNumber = txtPhone.Text; // Add adult member errCode = bl.AddNewMember(myMember); if (errCode == ErrorCode.AddAdultFailed) { toolStripStatusLabel1.Text =
Could not add this Adult record
; return; } // Pass and create new Information form frmMemberInfo myForm = new frmMemberInfo(myMember); myForm.MdiParent = this.MdiParent; myForm.Show(); this.Close(); } } else toolStripStatusLabel1.Text =
User canceled adding adult member
; }} ADO.NET: Adding Juvenile to databaseAdd member method, overridden to handle either an Adult or Juvenile member. This code displays how I handled the addition of the juvenile member. The method is passed an object of type JuvenileMember./// ,[object Object],/// ,[object Object],JuvenileMemberpublic void AddMember(JuvenileMember aMember){ // Set-up the connection using (SqlConnection cnn = new SqlConnection(Properties.Settings.Default.LibraryConnection)) { // Create the command using (SqlCommand cmd = new SqlCommand(
dbo.AddJuvenile
, cnn)) { try { // Assign the parameters cmd.CommandType = CommandType.StoredProcedure; cmd.Parameters.AddWithValue(
@FirstName
, aMember.FirstName); cmd.Parameters.AddWithValue(
@MiddleInitial
, aMember.MiddleInitial); cmd.Parameters.AddWithValue(
@LastName
, aMember.LastName); cmd.Parameters.AddWithValue(
@Adult_Member_No
, aMember.AdultMemberID); cmd.Parameters.AddWithValue(
@Birth_Date
, aMember.BirthDate); cmd.Parameters.Add(
@MemberNo
, SqlDbType.SmallInt, 2).Direction = ParameterDirection.Output; cmd.Parameters.Add(
@Return
, SqlDbType.Int, 4).Direction = ParameterDirection.ReturnValue; // Open the connection cnn.Open(); cmd.ExecuteNonQuery(); cnn.Close(); aMember.MemberID = Convert.ToInt16(cmd.Parameters[
@MemberNo
].Value); aMember = (JuvenileMember)this.GetMember(aMember.MemberID); } // Catch any SQL Errors catch (SqlException sqlex) { cnn.Close(); int sqlErr = Convert.ToInt32(cmd.Parameters[
@Return
].Value); if (sqlex.Number == 50000) { switch (sqlex.State) { case 13: // Invalid member number throw new ArgumentOutOfRangeException(sqlex.Message); case 10: // Adult sponsor not found throw new LibraryException(ErrorCode.MissingAdultMember); case 11: // Add Juvenile member failed throw new LibraryException(ErrorCode.AddJuvenileFailed); default: throw new LibraryException(ErrorCode.GenericException, sqlex.Message, sqlex); ADO.NET: Adding Juvenile to databaseContinued } } else { if (sqlex.Number == 8114) // ArgumentOutOfRange { throw new ArgumentOutOfRangeException(sqlex.Message); } else { throw new LibraryException(ErrorCode.GenericException, sqlex.Message, sqlex); } } } catch (Exception ex) { throw new LibraryException(ErrorCode.GenericException, ex.Message, ex); } } }} Stored Procedure to Add Book (Phase III)The stored procedure checks if the ISBN is already in the database. If the ISBN exists then it will just add another copy to the Copy table. If the ISBN does not exist, then the title and author are added to the Title table first to get the Title_No and then the Title_No and ISBN are added to Item table. The last thing added is Copy_No to the Copy table.ALTER PROC [dbo].[AddBook]/************************************** * Add Book to Library * Add a new book if ISBN is not * found. If found it adds a new * copy number only * Parameters: * @ISBN - Number of item * @Title - Title of item * @Author - Author of item * Return: * @CopyNo - Copy number * * Author: John Elmer * Date: 06/26/2009 * *************************************/@ISBN int = 0,@Title varchar(63) = NULL,@Author varchar(31) = NULL,@CopyNo smallint OUTPUTASDECLARE @TitleNo int-- Check that ISBN is between 1 and 2,147,483,647IF @ISBN <= 0 OR @ISBN > 2147483647BEGINRAISERROR ('Invalid ISBN, must be between 1 and 2,147,483,647',14,13)RETURNEND-- Check if ISBN exists in ItemIF EXISTS (SELECT * FROM dbo.Item WHERE ISBN = @ISBN)BEGINBEGIN TRANDECLARE @TempCopyNo smallintSET @TempCopyNo = (SELECT MAX(Copy_No) FROMdbo.COPY WHERE ISBN = @ISBN) + 1SET @TitleNo = (SELECT I.Title_No FROM ITEM I WHEREI.ISBN = @ISBN)-- Add to Copy onlyINSERT dbo.CopyVALUES (@ISBN, @TempCopyNo, @TitleNo, 'N')IF @@ERROR <> 0BEGINROLLBACKRAISERROR ('Could not add Item', 14, 2)RETURN @@ERROREND Stored Procedure to Add Book (Phase III)ContinuedSET @CopyNo = @TempCopyNoCOMMIT TRANEND-- ISBN does not existELSEBEGINIF @Title IS NULL OR @Author IS NULLBEGINRAISERROR ('Title and Author must be provided',14,2)RETURNENDBEGIN TRAN-- Insert into Title first to get Title_noINSERT dbo.TitleVALUES (@Title, @Author, NULL)IF @@ERROR <> 0BEGINROLLBACKRAISERROR ('Could not add Item', 14, 2)RETURN @@ERRORENDSET @TitleNo = @@IDENTITY-- Add to ItemINSERT dbo.ItemVALUES (@ISBN, @TitleNo, NULL, NULL, 'Y')IF @@ERROR <> 0BEGINROLLBACKRAISERROR ('Could not add Item', 14, 2)RETURN @@ERROREND-- Add to CopyINSERT dbo.CopyVALUES (@ISBN, 1, @TitleNo, 'N')IF @@ERROR <> 0BEGINROLLBACKRAISERROR ('Could not add Item', 14, 2)RETURN @@ERRORENDSET @CopyNo = 1COMMIT TRANEND Member Information Screen (Windows) Member Information Screen (Web)

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