compound.ascx.cs

Microsoft?ASP.NET Programming with Microsoft Visual C#?.NET Version 2003 Step By Step

namespace Chapter_07
{
	using System;
	using System.Data;
	using System.Drawing;
	using System.Web;
	using System.Web.UI.WebControls;
	using System.Web.UI.HtmlControls;

	/// <summary>
	///		Summary description for Compound.
	/// </summary>
	public class Compound : System.Web.UI.UserControl
	{
		protected System.Web.UI.WebControls.Label Label1;
		protected System.Web.UI.WebControls.Label Label2;
		protected System.Web.UI.WebControls.TextBox TextBox1;
		protected System.Web.UI.WebControls.Label Label3;
		protected System.Web.UI.WebControls.TextBox TextBox2;
		protected System.Web.UI.WebControls.Label Label4;
		protected System.Web.UI.WebControls.TextBox TextBox3;
		protected System.Web.UI.WebControls.Label Label5;
		protected System.Web.UI.WebControls.DropDownList DropDownList1;
		protected System.Web.UI.WebControls.Button Button1;
		protected System.Web.UI.WebControls.Label Label6;

		private void Page_Load(object sender, System.EventArgs e)
		{
			// Put user code to initialize the page here
		}

		#region Web Form Designer generated code
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: This call is required by the ASP.NET Web Form Designer.
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		///		Required method for Designer support - do not modify
		///		the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			this.Button1.Click += new System.EventHandler(this.Button1_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void Button1_Click(object sender, System.EventArgs e)
		{
			Label6.Text="Final Balance: " +
				CalculateBalance(Convert.ToInt32(TextBox1.Text),
					(Convert.ToDouble(TextBox2.Text) / 100.0),
					Convert.ToInt32(TextBox3.Text),
					Convert.ToInt16(
					DropDownList1.SelectedItem.Value)).ToString();
		}

		private string CalculateBalance(int Principal, 
			double Rate, int Years,
			int Period)
		{
			double result;
			double NumToBeRaised = (1 + Rate / Period);
			result=Principal * System.Math.Pow(NumToBeRaised, 
				(Years * Period));
			return(result.ToString("C"));
		}
	}
}