How to get text box float value in 00.00 formate

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in winform text box when user enter 10 and
i store this value in float using float.parse(textbox1.text)
value store as int (10)

but i want to store it in 10.00 formate

after that i do some divison methametic on this value
and suppose answer is 5.239694105
i also want this answer to 5.24

can someone explain me in detail how to do this ?
i am newbe in c#

What I have tried:

using (SqlConnection conn = new SqlConnection(con))
{
using (SqlCommand cmd = new SqlCommand("usp_weightinsertdetails", conn))
{
cmd.CommandType = CommandType.StoredProcedure;

cmd.Parameters.AddWithValue("@Date", dateTimePicker1.Value);
cmd.Parameters.AddWithValue("@ProductName", textBox1.Text);
cmd.Parameters.AddWithValue("ProductPieces", int.Parse(textBox2.Text));

float weight, pc, avr;
weight = float.Parse(textBox3.Text);
pc = float.Parse(textBox2.Text);
avr = weight / pc;

cmd.Parameters.AddWithValue("@ProductWeight", weight);
cmd.Parameters.AddWithValue("@AveragePieceWeight", avr);

conn.Open();
cmd.ExecuteNonQuery();

Posted 1-Jul-16 4:17am

Member 12592153

Updated 1-Jul-16 4:31am

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Richard MacCutchan · Accepted Answer · 2016-07-01T04:30:00

Solution 1

Use a format string to get the output in the required form. See Single.ToString Method (String) (System)[^]. you should also read What Every Computer Scientist Should Know About Floating-Point Arithmetic[^].

Posted 1-Jul-16 4:30am

Richard MacCutchan

Updated 1-Jul-16 4:32am

v2

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Member 12592153 1-Jul-16 11:00am

thanx for solution

F-ES Sitecore · Accepted Answer · 2016-07-01T04:31:00

Numbers and dates only gain a "format" when you convert them to a string, so the answer to your question is that you can't store your float in a certain format. Keep it as float and when you want to show it convert it to a string of the required format;

C#

float f = 10F;
System.Diagnostics.Debug.WriteLine(f.ToString("0.00"));

f = 1.123F;
System.Diagnostics.Debug.WriteLine(f.ToString("0.00"));