Add last input value in result value on clicking result button ? [Resolved]

Posted by Adeel under C# on 7/31/2015 | Points: 10 | Views : 1196 | Status : [Member] | Replies : 2

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i have textbox. Two values and a operator is entered in textbox. after clicking result button answer is displayed in textbox. What i want once result is calculated and displayed in textbox, then if user again click result button then it must add result value to last entered input in textbox.

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Posted by: Rajnilari2015 on: 8/3/2016 [Member] [Microsoft_MVP] [MVP] Platinum | Points: 50

0	So you are trying to make a mini calculator Here is what you can do. public string Calculate(string firstNumber, string secondNumber, string Operator) { string result = string.Empty; try { switch (Operator) { case "+": result = (float.Parse(firstNumber) + float.Parse(secondNumber)).ToString(); break; case "-": result = (float.Parse(firstNumber) - float.Parse(secondNumber)).ToString(); break; case "": result = (float.Parse(firstNumber) float.Parse(secondNumber)).ToString(); break; case "/": result = (float.Parse(firstNumber) / float.Parse(secondNumber)).ToString(); break; } } catch (Exception ex) { throw ex; } return result; } Earlier we have developed a similar kind of application which is avaliable at ( http://www.dotnetfunda.com/articles/show/1650/building-a-calculator-using-wp-71mango ) You can download that and reuse the class files. Even the piece of code posted here is adopted from that article. Hope that answers your question. -- Thanks & Regards, RNA Team Adeel, if this helps please login to Mark As Answer. \| Alert Moderator

So you are trying to make a mini calculator

Here is what you can do.

public string Calculate(string firstNumber, string secondNumber, string Operator)
{
            string result = string.Empty;          
            
            try
            {
                switch (Operator)
                {
                    case "+": result = (float.Parse(firstNumber) + float.Parse(secondNumber)).ToString(); break;
                    case "-": result = (float.Parse(firstNumber) - float.Parse(secondNumber)).ToString(); break;
                    case "*": result = (float.Parse(firstNumber) * float.Parse(secondNumber)).ToString(); break;
                    case "/": result = (float.Parse(firstNumber) / float.Parse(secondNumber)).ToString(); break; 
                }
            }
            catch (Exception ex)
            {
                throw ex;
                
            }
            return result;
}

Earlier we have developed a similar kind of application which is avaliable at ( http://www.dotnetfunda.com/articles/show/1650/building-a-calculator-using-wp-71mango )

You can download that and reuse the class files. Even the piece of code posted here is adopted from that article.

Hope that answers your question.

--
Thanks & Regards,
RNA Team

Adeel, if this helps please login to Mark As Answer. | Alert Moderator

Posted by: Ugrasen on: 8/2/2016 [Member] Starter | Points: 25

0	if (textBox4.Text=="") { int a = Int32.Parse(textBox1.Text); int b = Int32.Parse(textBox2.Text); if ("+" == textBox3.Text) { textBox4.Text = (a + b).ToString(); } else if ("-" == textBox3.Text) { textBox4.Text = (a - b).ToString(); } else if ("" == textBox3.Text) { textBox4.Text = (a b).ToString(); } else if ("/" == textBox3.Text) { textBox4.Text = (a / b).ToString(); } } else { if ("+" == textBox3.Text) { textBox4.Text = (Int32.Parse(textBox4.Text) + Int32.Parse(textBox4.Text)).ToString(); } else if ("-" == textBox3.Text) { textBox4.Text = (Int32.Parse(textBox4.Text) - Int32.Parse(textBox4.Text)).ToString(); } else if ("" == textBox3.Text) { textBox4.Text = (Int32.Parse(textBox4.Text) Int32.Parse(textBox4.Text)).ToString(); } else if ("/" == textBox3.Text) { textBox4.Text = (Int32.Parse(textBox4.Text) / Int32.Parse(textBox4.Text)).ToString(); } } Adeel, if this helps please login to Mark As Answer. \| Alert Moderator

if (textBox4.Text=="")

            {

                int a = Int32.Parse(textBox1.Text);

                int b = Int32.Parse(textBox2.Text);

                if ("+" == textBox3.Text)

                {

                    textBox4.Text = (a + b).ToString();



                }

                else if ("-" == textBox3.Text)

                {

                    textBox4.Text = (a - b).ToString();

                }

                else if ("*" == textBox3.Text)

                {

                    textBox4.Text = (a * b).ToString();

                }

                else if ("/" == textBox3.Text)

                {

                    textBox4.Text = (a / b).ToString();

                }

            }

            else

            {

                if ("+" == textBox3.Text)

                {

                    textBox4.Text = (Int32.Parse(textBox4.Text) + Int32.Parse(textBox4.Text)).ToString();

                }

                else if ("-" == textBox3.Text)

                {

                    textBox4.Text = (Int32.Parse(textBox4.Text) - Int32.Parse(textBox4.Text)).ToString();

                }

                else if ("*" == textBox3.Text)

                {

                    textBox4.Text = (Int32.Parse(textBox4.Text) * Int32.Parse(textBox4.Text)).ToString();

                }

                else if ("/" == textBox3.Text)

                {

                    textBox4.Text = (Int32.Parse(textBox4.Text) / Int32.Parse(textBox4.Text)).ToString();

                }

            }

Adeel, if this helps please login to Mark As Answer. | Alert Moderator

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