How do I convert a string to a decimal number in c#

Question

The code looks like this:

private void button1_Click(object sender, EventArgs e)
{            
    bet = int.Parse(textBox1.Text);                      
}

It works fine when the textbox contains whole numbers like 10, 5, 6, etc. But with decimals like 10,5 it always returns:

system.formatexception 'input string was not in a correct format.'

Any help is much appreciated!

integers **can not** contain decimals. by definition - integers are for _whole_ numbers. — Franz Gleichmann, May 16 '20 at 13:08
Then try [decimal.TryParse()](https://learn.microsoft.com/en-us/dotnet/api/system.decimal.tryparse). Note that you're using a comma as decimal separator, so add CultureInfo.CurrentCulture. — Jimi, May 16 '20 at 13:09

score 1 · Accepted Answer · answered May 16 '20 at 13:10

1

decimal.Parse is best in your case

answered May 16 '20 at 13:10

score 0 · Answer 2 · answered May 16 '20 at 13:09

0

bet = Convert.ToDecimal(textBox1.Text);

answered May 16 '20 at 13:09

Yargicx

score 0 · Answer 3 · answered May 16 '20 at 13:16

to convert a string to a decimal number you can use the method Parse() of decimal number types.

For example:

These methods will return the number parsed as a decimal type with the main difference being the precision.

If you want to parse forcing the use of the comma, you can provide as the second parameter an IFormatProvider object with the needed locale.

For example: double.Format("45,892", new CultureInfo("it"));

score 0 · Answer 4 · answered May 16 '20 at 13:19

0

Resolved.

doing decimal.Parse(); didn't work at first but then I realized that I had accidentally defined bet like this further up:

int bet;

I changed it to:

decimal bet;

It now works great, thanks for the answers!

answered May 16 '20 at 13:19

4 Answers4