 C#- calling method to get data from textbox and display in messagebox |
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  Jun 25 2009, 05:00 AM
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#1
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New Member  Group: Members Posts: 4 Joined: 25-June 09 Member No.: 345,362  |
I am calling a method to display data in a messagebox- unforutunetly - I am just trying to learn override and calling method to use in interface - so my code not working: class MyBaseClass { public static int _num1; public static int _num2; public int Num1 { get { return _num1; } set { _num1 = value; } } public int Num2 { get { return _num2; } set { _num2 = value; } } public virtual int calculate() { return _num1 + _num2; } } } class myDerivedClass: MyBaseClass { private int _num1; private int _num2; public override int calculate() { return _num1 * _num2; } } private void button3_Click(object sender, EventArgs e) { I havemyDerivedClass mdc = new myDerivedClass(); mdc.Num1 = int.Parse(textBox1.Text); mdc.Num2 = int.Parse(textBox2.Text); MessageBox.Show(total.ToString()); two textboxes on form and a button- am attempting to code button to display results from data entered in textboxes I actually want to use first calculate method to get addition result and then override to get multiplication thank you |
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Jun 25 2009, 07:31 AM
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#2
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 Hail Groovicus! Group: Site Admin Posts: 7,900 Joined: 5-June 04 From: Centerville, SD Member No.: 689 |
Define 'not working'.
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Jun 25 2009, 11:22 AM
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#3
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New Member Group: Members Posts: 4 Joined: 25-June 09 Member No.: 345,362 |
definition of not working: (sorry)
I am am a newbie to overriding and overloading- this is overriding a method. I created these two classes - so I could override the method calculate in the mybaseclass. but cannot call the method to calculate to add numbers together cannot call the override method to change to multiply numbers. what I am totally uninformed on is how to call the methods and have _num1 and _num2 values connect to textbox1 and textbox2 -looking for help beyond myDerivedClass mdc = new myDerivedClass() thank y ou This post has been edited by donbrooks: Jun 25 2009, 11:24 AM |
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Jun 25 2009, 11:57 AM
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#4
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New Member Group: Members Posts: 4 Joined: 25-June 09 Member No.: 345,362 |
maybe more precise- I cannot call the calculate method above to total the numbers in text boxes on form to display in messagebox- can you help at all?
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Jun 25 2009, 12:25 PM
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#5
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Hail Groovicus! Group: Site Admin Posts: 7,900 Joined: 5-June 04 From: Centerville, SD Member No.: 689 |
Yes, I can help; just not right now. Working on my own problems at the moment.
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Jun 25 2009, 06:20 PM
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#6
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Hail Groovicus! Group: Site Admin Posts: 7,900 Joined: 5-June 04 From: Centerville, SD Member No.: 689 |
Just two things; it would be helpful if you used the code formatting tags so that I can actually see what your code looks like, and if there is something as simple as a typo. For instance, I can't tell if this: I havemyDerivedClass mdc = new myDerivedClass(); is an actual line in your code, or if it is just a formatting error from when you made the post. I can't actually see that the listener is properly enclosed either. In short, I can't tell if you even have proper code.
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Jun 25 2009, 07:15 PM
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#7
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New Member Group: Members Posts: 4 Joined: 25-June 09 Member No.: 345,362 |
Thanks- sorry for muddled code
I have been struggling with creating a object-setting properties-calling methods and displaying total now in that order I have made buttons work- my derived class add = new myDerived Class() add.num1 = Int32.Parse(textbox1.text); add.num2 = Int32.Parse(textbox2.text); int mulitply = add.calculate(); messagebox ..... next time I'll post actual code and try to explain less and clearer |
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