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c# calculate percent of textbox value

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Visual Basic .NET

c# calculate percent of textbox value

mind controll

11yAsked Oct 16, 2015, 6:36 PM10.5kVisual Basic .NET

I have 2 textboxes

textbox1, textbox2

I want to calculate 15% of the number user entered in textbox1 and show it in textbox2

I tried this :

if (!string.IsNullOrEmpty(textBox3.Text))

textBox7.Text = (int.Parse(textBox3.Text) *100 / "15%).ToString();

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Sujeet Suman11y ago
Accepted answer
Mind please once try below code.

private void button1_Click(object sender, EventArgs e)
{
   double m_UserInput = 0.0;

   // Check your input is valid or not
   if (double.TryParse(textBox1.Text, out m_UserInput))
   {
      textBox2.Text = ((m_UserInput * 15)/100).ToString( );
   }
   else
   {
      MessageBox.Show("Please enter a valid number.");
  }
}

If this is helpful for you then please accept my Answer.
+2
Priyaranjan K S11y ago
Hi,

Integer division will truncate decimal places. So use double data types .

double number1 =15;
double number2= 30 ; //The number you got from the text box3
double percentage = number1*(number2/100) ;

Console.WriteLine("15 % of " +number2 + "is - " + percentage); // assign to textbox7 Instead

Thanks,
Priyan

If you found this useful Please Accept this as Answer
+2