error:Formatexception was unhandled by user code.

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Hi,

I am trying to parse textbox value into double but i am getting error "System.FormatException was unhandled by user code - Input string was not in a correct format;
This is driving me crazy! Can anyone see what the problem is?"

I am trying like this,

C#

double a= double.Parse(txtcoeffciantA.Text);
           double b = double.Parse(txtcoeffciantB.Text);
           double c= double.Parse(txtcoeffciantC.Text);

i have the values in corresponding textbox like 0.00051368, -15, 1.89574224.

I have tried with "double.Tryparse" then i am not getting exception but endup with all zero's. i know the difference between parse and Tryparse.

Please someone help me what is wrong in that line.

Posted 25-Apr-13 4:12am

vebi1000

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E.F. Nijboer · Answer 1 · 2013-04-25T04:51:00

Solution 2

Did you check the regional settings of the system? Might be expecting 0,123 instead of 0.123

Good luck!

Posted 25-Apr-13 4:51am

E.F. Nijboer

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vebi1000 26-Apr-13 3:34am

Yes you are right, i have tried as you said it is working. thanks alot,i don't know this will be a problem.

E.F. Nijboer 26-Apr-13 4:34am

You can get the information from System.Globalization.CultureInfo.CurrentCulture.NumberFormat. Check this link for more info:
http://msdn.microsoft.com/en-us/library/system.globalization.cultureinfo.numberformat.aspx

OriginalGriff · Answer 2 · 2013-04-25T04:50:00

I tried exactly your code:

C#

TextBox txtcoeffciantA = new TextBox();
txtcoeffciantA.Text = "0.00051368";
TextBox txtcoeffciantB = new TextBox();
txtcoeffciantB.Text = "-15";
TextBox txtcoeffciantC = new TextBox();
txtcoeffciantC.Text = "1.89574224";
double a = double.Parse(txtcoeffciantA.Text);
double b = double.Parse(txtcoeffciantB.Text);
double c = double.Parse(txtcoeffciantC.Text);
Console.WriteLine("{0}:{1}:{2}", a, b, c);

And it worked exactly as I would expect:

0.00051368:-15:1.89574224

So put a breakpoint on the first Parse line, and examine your inputs. One of them is not what you think it is...

error:Formatexception was unhandled by user code.

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error:Formatexception was unhandled by user code.

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