adding and subtracting values in textbox

Question

textBox10.Text = (Decimal.Parse(textBox8.Text)) - (((Decimal.Parse(textBox6.Text)) *(Decimal.Parse(textBox9.Text).ToString())));

guys i wanted to multiply textbox6 and textbox9 and subtract it to textbox8 i have coded it as above and i am getting error so please help me in this code thanks in advance

Vulpes · Answer

It would be easier if you split it up: decimal temp = Decimal.Parse(textBox8.Text); decimal temp2 = Decimal.Parse(textBox6.Text); decimal temp3 = Decimal.Parse(textBox9.Text); textBox10.Text = (temp - temp2 * temp3).ToString(); However if you don't want to use intermediate variables then this should work: textBox10.Text = (Decimal.Parse(textBox8.Text) - Decimal.Parse(textBox6.Text) * Decimal.Parse(textBox9.Text)).ToString();

Satyapriya Nayak · Answer

Hi Karthik Try this... using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; namespace WindowsFormsApplication1 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void button1_Click(object sender EventArgs e) { textBox10.Text = Convert.ToString((Decimal.Parse(textBox8.Text)) - (((Decimal.Parse(textBox6.Text)) * (Decimal.Parse(textBox9.Text))))); } } } Thanks

Vulpes · Answer

Incidentally if you do use intermediate variables then it's easy to check for invalid input at the same time: decimal temp temp2 temp3; bool isValid = Decimal.TryParse(textBox8.Text out temp); bool isValid2 = Decimal.TryParse(textBox6.Text out temp2); bool isValid3 = Decimal.TryParse(textBox9.Text out temp3); if (!isValid || !isValid2 || !isValid3) { textBox10.Text = ERROR!; } else { textBox10.Text = (temp - temp2 * temp3).ToString(); }