numberpickerinput.cs

应用于C#中的参照功能

            this.button7.Size = new System.Drawing.Size(28, 25);
            this.button7.TabIndex = 39;
            this.button7.Text = "7";
            this.button7.Click += new System.EventHandler(this.button7_Click);
            // 
            // buttonEquals
            // 
            this.buttonEquals.FlatStyle = System.Windows.Forms.FlatStyle.Popup;
            this.buttonEquals.Location = new System.Drawing.Point(67, 103);
            this.buttonEquals.Name = "buttonEquals";
            this.buttonEquals.Size = new System.Drawing.Size(47, 25);
            this.buttonEquals.TabIndex = 38;
            this.buttonEquals.Text = "=";
            this.buttonEquals.Click += new System.EventHandler(this.buttonEquals_Click);
            // 
            // NumberPickerInput
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
            this.ClientSize = new System.Drawing.Size(122, 135);
            this.Controls.Add(this.buttonBackspace);
            this.Controls.Add(this.buttonClear);
            this.Controls.Add(this.button0);
            this.Controls.Add(this.buttonDecimalSeparator);
            this.Controls.Add(this.buttonPlusMinus);
            this.Controls.Add(this.buttonPlus);
            this.Controls.Add(this.buttonMinus);
            this.Controls.Add(this.button3);
            this.Controls.Add(this.button2);
            this.Controls.Add(this.button1);
            this.Controls.Add(this.buttonTimes);
            this.Controls.Add(this.button6);
            this.Controls.Add(this.button5);
            this.Controls.Add(this.button4);
            this.Controls.Add(this.buttonDivide);
            this.Controls.Add(this.button9);
            this.Controls.Add(this.button8);
            this.Controls.Add(this.button7);
            this.Controls.Add(this.buttonEquals);
            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedToolWindow;
            this.Name = "NumberPickerInput";
            this.StartPosition = System.Windows.Forms.FormStartPosition.Manual;
            this.Text = "Add number";
            this.ResumeLayout(false);

		}
		#endregion

		#region EventHandlers
		/// <summary>
		/// Method to be performed when clicking the 7 button
		/// </summary>
		/// <param name="sender">The sender of the event</param>
		/// <param name="e">The arguments which have been given</param>
		private void button7_Click(object sender, System.EventArgs e)
		{
			this.AddCharacter('7');
		}

		/// <summary>
		/// Method to be performed when clicking the 8 button
		/// </summary>
		/// <param name="sender">The sender of the event</param>
		/// <param name="e">The arguments which have been given</param>
		private void button8_Click(object sender, System.EventArgs e)
		{ 
			this.AddCharacter('8');
		}

		/// <summary>
		/// Method to be performed when clicking the 9 button
		/// </summary>
		/// <param name="sender">The sender of the event</param>
		/// <param name="e">The arguments which have been given</param>
		private void button9_Click(object sender, System.EventArgs e)
		{
			this.AddCharacter('9');
		}

		/// <summary>
		/// Method to be performed when clicking the 4 button
		/// </summary>
		/// <param name="sender">The sender of the event</param>
		/// <param name="e">The arguments which have been given</param>
		private void button4_Click(object sender, System.EventArgs e)
		{
			this.AddCharacter('4');
		}

		/// <summary>
		/// Method to be performed when clicking the 5 button
		/// </summary>
		/// <param name="sender">The sender of the event</param>
		/// <param name="e">The arguments which have been given</param>
		private void button5_Click(object sender, System.EventArgs e)
		{
			this.AddCharacter('5');
		}

		/// <summary>
		/// Method to be performed when clicking the 6 button
		/// </summary>
		/// <param name="sender">The sender of the event</param>
		/// <param name="e">The arguments which have been given</param>
		private void button6_Click(object sender, System.EventArgs e)
		{
			this.AddCharacter('6');
		}

		/// <summary>
		/// Method to be performed when clicking the 1 button
		/// </summary>
		/// <param name="sender">The sender of the event</param>
		/// <param name="e">The arguments which have been given</param>
		private void button1_Click(object sender, System.EventArgs e)
		{
			this.AddCharacter('1');
		}

		/// <summary>
		/// Method to be performed when clicking the 2 button
		/// </summary>
		/// <param name="sender">The sender of the event</param>
		/// <param name="e">The arguments which have been given</param>
		private void button2_Click(object sender, System.EventArgs e)
		{
			this.AddCharacter('2');
		}

		/// <summary>
		/// Method to be performed when clicking the 3 button
		/// </summary>
		/// <param name="sender">The sender of the event</param>
		/// <param name="e">The arguments which have been given</param>
		private void button3_Click(object sender, System.EventArgs e)
		{
			this.AddCharacter('3');
		}

		/// <summary>
		/// Method to be performed when clicking the 0 button
		/// </summary>
		/// <param name="sender">The sender of the event</param>
		/// <param name="e">The arguments which have been given</param>
		private void button0_Click(object sender, System.EventArgs e)
		{
			this.AddCharacter('0');
		}

		/// <summary>
		/// Method to be performed when clicking the decimal separator button
		/// </summary>
		/// <param name="sender">The sender of the event</param>
		/// <param name="e">The arguments which have been given</param>
		private void buttonDecimalSeparator_Click(object sender, System.EventArgs e)
		{
			for (int i = 0; i < System.Globalization.NumberFormatInfo.CurrentInfo.NumberDecimalSeparator.Length; i++)
			{
				this.AddCharacter(System.Globalization.NumberFormatInfo.CurrentInfo.NumberDecimalSeparator[i]);
			}
		}

		/// <summary>
		/// Method to be performed when clicking the minus button
		/// </summary>
		/// <param name="sender">The sender of the event</param>
		/// <param name="e">The arguments which have been given</param>
		private void buttonPlusMinus_Click(object sender, System.EventArgs e)
		{
			if(this.result.Text.Length >= 1) 
			{
				if(this.result.Text[0].Equals("-")) 
					this.result.Text = this.result.Text.Substring(1, this.result.Text.Length - 1);
				else
					this.result.Text = this.result.Text.Insert(0, "-");
			}
		}

		/// <summary>
		/// Method to be performed when clicking the clear button
		/// </summary>
		/// <param name="sender">The sender of the event</param>
		/// <param name="e">The arguments which have been given</param>
		private void buttonClear_Click(object sender, System.EventArgs e)
		{
			this.result.Text = "";
			this.temporary = 0;
			this.f = null;
			this.clear = false;
		}

		/// <summary>
		/// Method to be performed when clicking the backspace button
		/// </summary>
		/// <param name="sender">The sender of the event</param>
		/// <param name="e">The arguments which have been given</param>
		private void buttonBackspace_Click(object sender, System.EventArgs e)
		{
			this.result.Text = this.result.Text.Substring(0, this.result.Text.Length - 1);
		}

		/// <summary>
		/// Method to be performed when clicking the equals button
		/// </summary>
		/// <param name="sender">The sender of the event</param>
		/// <param name="e">The arguments which have been given</param>
		private void buttonEquals_Click(object sender, System.EventArgs e)
		{
			this.Calculate();
			this.Close();
		}

		/// <summary>
		/// Method to be performed when clicking the divide button
		/// </summary>
		/// <param name="sender">The sender of the event</param>
		/// <param name="e">The arguments which have been given</param>
		private void buttonDivide_Click(object sender, System.EventArgs e)
		{
			this.Calculate();
			this.temporary = Convert.ToDouble(this.result.Text);		
			this.f = new Function(Utilities.Divide);
			this.clear = true;
		}

		/// <summary>
		/// Method to be performed when clicking the times button
		/// </summary>
		/// <param name="sender">The sender of the event</param>
		/// <param name="e">The arguments which have been given</param>
		private void buttonTimes_Click(object sender, System.EventArgs e)
		{
			this.Calculate();
			this.temporary = Convert.ToDouble(this.result.Text);
			this.f = new Function(Utilities.Multiply);
			this.clear = true;
		}

		/// <summary>
		/// Method to be performed when clicking the minus button
		/// </summary>
		/// <param name="sender">The sender of the event</param>
		/// <param name="e">The arguments which have been given</param>
		private void buttonMinus_Click(object sender, System.EventArgs e)
		{
			this.Calculate();
			this.temporary = Convert.ToDouble(this.result.Text);
			this.f = new Function(Utilities.Substract);
			this.clear = true;
		}

		/// <summary>
		/// Method to be performed when clicking the plus button
		/// </summary>
		/// <param name="sender">The sender of the event</param>
		/// <param name="e">The arguments which have been given</param>
		private void buttonPlus_Click(object sender, System.EventArgs e)
		{
			this.Calculate();
			this.temporary = Convert.ToDouble(this.result.Text);
			this.f = new Function(Utilities.Add);
			this.clear = true;
		}

		#endregion
		
		#region Manipulators
		/// <summary>
		/// Method which is used for calculating the result of the function which has been pressed 
		/// with the temporary argument together with the last argument entered
		/// </summary>
		private void Calculate() 
		{
			if(this.f != null) 
			{
				// Calculate the new result based on the function
				this.temporary = f(this.temporary, Convert.ToDouble(this.result.Text));
				// Set the value of the textbox to the new result
				this.result.Text = this.temporary.ToString();
			}
			this.f = null;
		}

		/// <summary>
		/// Method that is used for adding a particular character to the textbox but first
		/// checking if the textbox does not need to be cleared first
		/// </summary>
		/// <param name="c">The new character to add</param>
		private void AddCharacter(char c) 
		{
			if(this.clear) 
			{
				this.result.Text = "";
				this.clear = false;
			}
			this.result.Text += c;
		}

		#endregion
	}
}