446 Chapter 7 using Procedures and Exception Handiiog Case Programming Assignmen

ID: 3920732 • Letter: 4

Question

446 Chapter 7 using Procedures and Exception Handiiog Case Programming Assignments 2 KARAOKE MUSIC NIGHT Design a Windows Classic Desktop application and write the code that will execute according to the program requirements in Figure 7-59 and the Use Case Definition in Figure 7-60 on page 447. Before writing the code her create an event planning document for each event in the program. The completed Windows Form object and objects in the user interface are shown in Figure 7-61 on page 447. REQUIREMENTS DOCUMENT Date: Date Submitted: Application Title: Karaoke Music Night Purpose: August 11, 2019 This Windows Classic Desktop application computes either the customized evening cost of am open microphone costing $2.99 per song or renting a private karaoke room for $8.99 an hour. The user can select singing karaoke per song or renting a private karaoke room for a group by Program Procedures: Algorithms, Processing, and room by the hour Conditions: the hour. 1. The user first selects whether to compute the cost of each karaoke song or a rental karaoke 2. After the user selects an option, display the necessary objects based on the selection. If the user selects number of songs ($2.99 per song), request the number of karaoke songs. If the user chooses the private karaoke room ($8.99 per hour), request the number of rental hours. 3. Based on the onse of 32.99 per song or $8.99 per hour for the private karaoke room, calculate the cout of the oumber of songs or hourly rental. Use separate procedures to make the two calculations 4. Display the total cosc result of the calculation on the form. 1. A Clear Form button should clear the form. 2. The data the user enters should be validated in Try-Catch blocks in separate procedures as Notes and Restrictions: needed Comments: 1. The application should begin with a splash screen that appears for approximately three seconds. 2. Obtain images for this program from CengageBrain.com. The name of the picture for the Windows form and the picture on the splash screen is karaoke. FIGURE 7-59

Explanation / Answer

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Karaoke_Music_Night
{
public partial class Splash : Form
{
Timer tmr = new Timer();

public Splash()
{
InitializeComponent();
tmr.Interval = 3000;
tmr.Tick += tmr_Tick;
tmr.Enabled = true;
}

void tmr_Tick(object sender, EventArgs e)
{
try
{
tmr.Enabled = false;
this.Hide();
Costing cs = new Costing();
cs.Show();
}
catch (Exception ex)
{ }
}
}
}

--------------------------------------------------------------------------------------------------------------------------------------------------

Splash.designer.cs-------------------------------------------------------------------------------------------------------------------------

namespace Karaoke_Music_Night
{
partial class Splash
{
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.IContainer components = null;

/// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}

#region Windows Form Designer generated code

}

#endregion

private System.Windows.Forms.TableLayoutPanel tableLayoutPanel1;
private System.Windows.Forms.PictureBox pbKaraoke;
private System.Windows.Forms.Label lblHeading;
private System.Windows.Forms.Label lblVersion;
private System.Windows.Forms.Label lblCopyright;
}
}

---------------------------------------------------------------------------------------------------------------------------------------------------

Costing.cs-------------------------------------------------------------------------------------------------------------------------------------

namespace Karaoke_Music_Night
{
public partial class Costing : Form
{
public Costing()
{
InitializeComponent();
cmbSelection.SelectedIndex = 0;
}

private void btnTotalCost_Click(object sender, EventArgs e)
{
try
{
double output;
if (ValidateInput(txtInput.Text))
{
if (cmbSelection.SelectedItem.ToString().Contains("Hours"))
output=Convert.ToInt32(txtInput.Text) * 8.99;
else
output = Convert.ToInt32(txtInput.Text) * 2.99;
lblOutput.Text = "Total cost of Karaoke Night: $"+output;

}
else
{
lblOutput.Text = "Invalid Input";
}
}
catch (Exception ex)
{ }
}

private void btnClear_Click(object sender, EventArgs e)
{
try
{
txtInput.Text = "";
lblOutput.Text = "";
}
catch (Exception ex)
{ }
}
bool ValidateInput(string input)
{
try
{

if (Convert.ToInt32(input) >= 0)
return true;
else
return false;
}
catch (Exception ex)
{
return false;
}
}
}
}

---------------------------------------------------------------------------------------------------------------------------------------------------

Costing.designer.cs-------------------------------------------------------------------------------------------------------------------------

namespace Karaoke_Music_Night
{
partial class Costing
{
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.IContainer components = null;

#region Windows Form Designer generated code

/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(Costing));
this.tableLayoutPanel1 = new System.Windows.Forms.TableLayoutPanel();
this.pbKaraoke = new System.Windows.Forms.PictureBox();
this.panel1 = new System.Windows.Forms.Panel();
this.tableLayoutPanel2 = new System.Windows.Forms.TableLayoutPanel();
this.lblHeading = new System.Windows.Forms.Label();
this.cmbSelection = new System.Windows.Forms.ComboBox();
this.lblInput = new System.Windows.Forms.Label();
this.txtInput = new System.Windows.Forms.TextBox();
this.btnTotalCost = new System.Windows.Forms.Button();
this.btnClear = new System.Windows.Forms.Button();
this.lblOutput = new System.Windows.Forms.Label();
this.tableLayoutPanel1.SuspendLayout();
((System.ComponentModel.ISupportInitialize)(this.pbKaraoke)).BeginInit();
this.panel1.SuspendLayout();
this.tableLayoutPanel2.SuspendLayout();
this.SuspendLayout();
//
// tableLayoutPanel1
//
this.tableLayoutPanel1.ColumnCount = 2;
this.tableLayoutPanel1.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(System.Windows.Forms.SizeType.Percent, 50F));
this.tableLayoutPanel1.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(System.Windows.Forms.SizeType.Percent, 50F));
this.tableLayoutPanel1.Controls.Add(this.pbKaraoke, 0, 0);
this.tableLayoutPanel1.Controls.Add(this.panel1, 1, 0);
this.tableLayoutPanel1.Dock = System.Windows.Forms.DockStyle.Fill;
this.tableLayoutPanel1.Location = new System.Drawing.Point(0, 0);
this.tableLayoutPanel1.Name = "tableLayoutPanel1";
this.tableLayoutPanel1.RowCount = 6;
this.tableLayoutPanel1.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 16.66667F));
this.tableLayoutPanel1.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 16.66667F));
this.tableLayoutPanel1.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 16.66667F));
this.tableLayoutPanel1.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 16.66667F));
this.tableLayoutPanel1.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 16.66667F));
this.tableLayoutPanel1.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 16.66667F));
this.tableLayoutPanel1.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Absolute, 20F));
this.tableLayoutPanel1.Size = new System.Drawing.Size(545, 387);
this.tableLayoutPanel1.TabIndex = 1;
//
// pbKaraoke
//
this.pbKaraoke.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.pbKaraoke.BackgroundImage = ((System.Drawing.Image)(resources.GetObject("pbKaraoke.BackgroundImage")));
this.pbKaraoke.Location = new System.Drawing.Point(3, 3);
this.pbKaraoke.Name = "pbKaraoke";
this.tableLayoutPanel1.SetRowSpan(this.pbKaraoke, 6);
this.pbKaraoke.Size = new System.Drawing.Size(266, 381);
this.pbKaraoke.SizeMode = System.Windows.Forms.PictureBoxSizeMode.AutoSize;
this.pbKaraoke.TabIndex = 0;
this.pbKaraoke.TabStop = false;
//
// panel1
//
this.panel1.Controls.Add(this.tableLayoutPanel2);
this.panel1.Dock = System.Windows.Forms.DockStyle.Fill;
this.panel1.Location = new System.Drawing.Point(275, 3);
this.panel1.Name = "panel1";
this.tableLayoutPanel1.SetRowSpan(this.panel1, 6);
this.panel1.Size = new System.Drawing.Size(267, 381);
this.panel1.TabIndex = 1;
//
// tableLayoutPanel2
//
this.tableLayoutPanel2.ColumnCount = 2;
this.tableLayoutPanel2.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(System.Windows.Forms.SizeType.Percent, 50F));
this.tableLayoutPanel2.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(System.Windows.Forms.SizeType.Percent, 50F));
this.tableLayoutPanel2.Controls.Add(this.lblInput, 0, 2);
this.tableLayoutPanel2.Controls.Add(this.lblHeading, 0, 0);
this.tableLayoutPanel2.Controls.Add(this.cmbSelection, 0, 1);
this.tableLayoutPanel2.Controls.Add(this.txtInput, 0, 3);
this.tableLayoutPanel2.Controls.Add(this.btnTotalCost, 0, 5);
this.tableLayoutPanel2.Controls.Add(this.btnClear, 1, 5);
this.tableLayoutPanel2.Controls.Add(this.lblOutput, 1, 6);
this.tableLayoutPanel2.Dock = System.Windows.Forms.DockStyle.Fill;
this.tableLayoutPanel2.Location = new System.Drawing.Point(0, 0);
this.tableLayoutPanel2.Name = "tableLayoutPanel2";
this.tableLayoutPanel2.RowCount = 8;
this.tableLayoutPanel2.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 19.1601F));
this.tableLayoutPanel2.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 6.036746F));
this.tableLayoutPanel2.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 25.98425F));
this.tableLayoutPanel2.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 9.448819F));
this.tableLayoutPanel2.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 9.711287F));
this.tableLayoutPanel2.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 8.661417F));
this.tableLayoutPanel2.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 7.874016F));
this.tableLayoutPanel2.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 12.5F));
this.tableLayoutPanel2.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Absolute, 20F));
this.tableLayoutPanel2.Size = new System.Drawing.Size(267, 381);
this.tableLayoutPanel2.TabIndex = 0;
//
// lblHeading
//
this.lblHeading.AutoSize = true;
this.tableLayoutPanel2.SetColumnSpan(this.lblHeading, 2);
this.lblHeading.Dock = System.Windows.Forms.DockStyle.Fill;
this.lblHeading.Font = new System.Drawing.Font("Microsoft Sans Serif", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.lblHeading.Location = new System.Drawing.Point(3, 0);
this.lblHeading.Name = "lblHeading";
this.lblHeading.Size = new System.Drawing.Size(261, 73);
this.lblHeading.TabIndex = 2;
this.lblHeading.Text = "Karaoke Music Night";
this.lblHeading.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
//
// cmbSelection
//
this.tableLayoutPanel2.SetColumnSpan(this.cmbSelection, 2);
this.cmbSelection.Dock = System.Windows.Forms.DockStyle.Fill;
this.cmbSelection.FormattingEnabled = true;
this.cmbSelection.Items.AddRange(new object[] {
"Hours in private Karaoke Booth ($8.99 per hour)",
"Number of Songs ($2.99 per song)"});
this.cmbSelection.Location = new System.Drawing.Point(3, 76);
this.cmbSelection.Name = "cmbSelection";
this.cmbSelection.Size = new System.Drawing.Size(261, 21);
this.cmbSelection.TabIndex = 3;
//
// lblInput
//
this.lblInput.AutoSize = true;
this.tableLayoutPanel2.SetColumnSpan(this.lblInput, 2);
this.lblInput.Dock = System.Windows.Forms.DockStyle.Fill;
this.lblInput.Font = new System.Drawing.Font("Microsoft Sans Serif", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.lblInput.Location = new System.Drawing.Point(3, 96);
this.lblInput.Name = "lblInput";
this.lblInput.Size = new System.Drawing.Size(261, 99);
this.lblInput.TabIndex = 4;
this.lblInput.Text = "Hourly Rental of Karaoke Room";
this.lblInput.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
//
// txtInput
//
this.txtInput.Anchor = System.Windows.Forms.AnchorStyles.None;
this.tableLayoutPanel2.SetColumnSpan(this.txtInput, 2);
this.txtInput.Location = new System.Drawing.Point(115, 203);
this.txtInput.Name = "txtInput";
this.txtInput.Size = new System.Drawing.Size(37, 20);
this.txtInput.TabIndex = 5;
//
// btnTotalCost
//
this.btnTotalCost.Dock = System.Windows.Forms.DockStyle.Right;
this.btnTotalCost.Location = new System.Drawing.Point(55, 271);
this.btnTotalCost.Name = "btnTotalCost";
this.btnTotalCost.Size = new System.Drawing.Size(75, 27);
this.btnTotalCost.TabIndex = 6;
this.btnTotalCost.Text = "Total Cost";
this.btnTotalCost.UseVisualStyleBackColor = true;
this.btnTotalCost.Click += new System.EventHandler(this.btnTotalCost_Click);
//
// btnClear
//
this.btnClear.Dock = System.Windows.Forms.DockStyle.Left;
this.btnClear.Location = new System.Drawing.Point(136, 271);
this.btnClear.Name = "btnClear";
this.btnClear.Size = new System.Drawing.Size(75, 27);
this.btnClear.TabIndex = 7;
this.btnClear.Text = "Clear";
this.btnClear.UseVisualStyleBackColor = true;
this.btnClear.Click += new System.EventHandler(this.btnClear_Click);
//
// lblOutput
//
this.lblOutput.AutoSize = true;
this.tableLayoutPanel2.SetColumnSpan(this.lblOutput, 2);
this.lblOutput.Dock = System.Windows.Forms.DockStyle.Fill;
this.lblOutput.Font = new System.Drawing.Font("Microsoft Sans Serif", 12F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.lblOutput.Location = new System.Drawing.Point(3, 331);
this.lblOutput.Name = "lblOutput";
this.lblOutput.Size = new System.Drawing.Size(261, 50);
this.lblOutput.TabIndex = 8;
this.lblOutput.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
//
// Costing
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(545, 387);
this.Controls.Add(this.tableLayoutPanel1);
this.Name = "Costing";
this.Text = "Karaoke Music Night";
this.tableLayoutPanel1.ResumeLayout(false);
this.tableLayoutPanel1.PerformLayout();
((System.ComponentModel.ISupportInitialize)(this.pbKaraoke)).EndInit();
this.panel1.ResumeLayout(false);
this.tableLayoutPanel2.ResumeLayout(false);
this.tableLayoutPanel2.PerformLayout();
this.ResumeLayout(false);

}

#endregion

private System.Windows.Forms.TableLayoutPanel tableLayoutPanel1;
private System.Windows.Forms.PictureBox pbKaraoke;
private System.Windows.Forms.Panel panel1;
private System.Windows.Forms.TableLayoutPanel tableLayoutPanel2;
private System.Windows.Forms.Label lblInput;
private System.Windows.Forms.Label lblHeading;
private System.Windows.Forms.ComboBox cmbSelection;
private System.Windows.Forms.TextBox txtInput;
private System.Windows.Forms.Button btnTotalCost;
private System.Windows.Forms.Button btnClear;
private System.Windows.Forms.Label lblOutput;
}
}

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446 Chapter 7 using Procedures and Exception Handiiog Case Programming Assignmen

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