Part II
We will use a linear expression to solve a problem which converts process instrumentation mA range values to psig signal air values. This is converted from a transducer calibrated with the linear expression to convert that value. No need to stress over the conversion, that calculation will be provided in the following. The idea here is to use the graphical form designer used in visual studio as a tool to display values and perform actions for the end user to use.
Output value of psig = ((mAI(this is the input value) - 4) / 16) * 12 + 3;  // mA conversion  to psig
Output percentScale = (mAI (this is the input value) - 4) / 16 * 100; // mA conversion to percent scale use this t display output of percent and your progress bar
 
First, your program should display a brief description of its operation make it very clear where the user should add their input value by using Textboxes to get the user’s response. Then display output by additional textboxes. We also want to display the results with (using MessageBox.Show() method), choose different formatting then used in the output Textboxes such as the difference in decimal value tenths vs hundredths.
 
Instructions:
Note: (For the following use your own naming convention.)
Step 1: Creating a new project
1.	Open Visual Studio and create a new project.
2.	Select "Windows Forms App (.NET Framework)" as the project template.
3.	Name the project "******_Calculator" and choose a location to save it.
Step 2: Designing the user interface
1.	Open the Form.cs file in the Solution Explorer.
2.	Drag and drop the following components from the Toolbox onto the form:
o	2 labels
o	3 textboxes
o	3 buttons
o	1 progress bar
3.	Use the Properties window to adjust the properties of each component as follows:
o	Label 1: set the Text property to "Input Value:"
o	Label 2: set the Text property to "Output Value:"
o	Textbox 1: set the Name property to "txtmAI"
o	Textbox 2: set the Name property to "txtInputValue" and set the ReadOnly property to "True"
o	Textbox 3: set the Name property to "txtOuputValue" and set the ReadOnly property to "True"
o	Button 1: set the Text property to "Calculate" and set the Name property to "btnCalc"
o	Button 2: set the Text property to "Clear" and set the Name property to "btnClear". In the clear code you will want to rewrite the string values to clear out every field

1.	
o	Button 3: set the Text property to "Close" and set the Name property to "btnClose". In the close code you will want to initiate the yourproject.ActiveForm.close();
o	Progress bar: set the Name property to "PrgBar" and set the Maximum property to "100"
2.	Analyze the circuit (calculate psigO) using the formula provided in the instructions.
3.	Calculate and display the percent scale using the formula provided in the instructions.
4.	Set the progress bar value to the percent scale using the Value property of the PrgBar component.
5.	Display the input and output values on the form using the ToString method and concatenate the string with the unit of measurement.
6.	Display the input and output values using the MessageBox. Concatenate the string with the input and output values, and the percent scale.
7.	Double-click the BtnClear button to create an event handler for the button click event. In the event handler, clear the TextBoxes and display a message using the MessageBox.
8.	Double-click the BtnClose button to create an event handler for the button click event. In the event handler, close the form using the ActiveForm.Close() method.
9.	Double-click the PrgBar component to create an event handler for the Click event. In the event handler, calculate and display the percent scale using the same formula used in Step 5.
10.	Run the program to test it. Enter a value in the txtmAI TextBox and click the BtnAdd button to calculate the output value, percent scale, and set the progress bar value. Click the BtnClear button to clear the form, and click the BtnClose button to close the form.