Data type Convertion error

Question

4.50/5 (2 votes)

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Hi sir,

Input string was not in a correct format.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

Exception Details: System.FormatException: Input string was not in a correct format.

Source Error: 

Line 29:             User_Registration urobj = new User_Registration();
Line 30:             urobj.Username = txt_username.Text;
Line 31:             urobj.Userid = Convert.ToInt32(txt_userid.Text);
Line 32:             urobj.Password = txt_passord.Text;
Line 33:             urobj.Conformpassword = txt_confrmpasswrd.Text;

Error At Line 31: Input string was not in a correct format.

even i tried urObj.userid=int.Parse(txt_userid.Text). This is also not working.

even in database also i declared useid as integer.

Please help me out....!!!!

Posted 10-Jan-12 11:04am

Prasad Guduri

Updated 10-Jan-12 11:10am

Wendelius

v2

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3 solutions

Solution 3

Try this:

User_Registration urobj = new User_Registration();
urobj.Username = txt_username.Text;
if (txt_userid.Text!= null)
urobj.Userid = Convert.ToInt32(txt_userid.Text);
else
urobj.Userid = 0;

urobj.Password = txt_passord.Text;
urobj.Conformpassword = txt_confrmpasswrd.Text;

Alternatively,
Debug the line 31 and check the value for  txt_userid.Text.
If it is "" (blank) then do the following:

User_Registration urobj = new User_Registration();
urobj.Username = txt_username.Text;
if (txt_userid.Text!= "")
urobj.Userid = Convert.ToInt32(txt_userid.Text);
else
urobj.Userid = 0;

urobj.Password = txt_passord.Text;
urobj.Conformpassword = txt_confrmpasswrd.Text;

Hope this helps!!!

Posted 10-Jan-12 19:33pm

abhay bansal

Updated 10-Jan-12 19:47pm

v2

Comments

Prasad Guduri 5-Nov-12 7:32am

Really Nice Explanation...Thanks You Abnay...!!!!

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Wendelius · Accepted Answer · 2012-01-10T11:11:00

Solution 1

The contents (text) in txt_userid contains illegal characters to be translated to integer. So ensure that you're inputting a proper number.

Also instead of using Parse, use TryParse[^] to check if the conversion can be done. If it cannot be done, inform the user to correct the data.

Posted 10-Jan-12 11:11am

Wendelius

Comments

Abhinav S 10-Jan-12 23:29pm

Of course. Try Parse is a good solution, I would have suggested that as well. 5.

Wendelius 11-Jan-12 0:51am

Thanks Abhinav :)

Tech Code Freak 11-Jan-12 4:50am

My 5!

Wendelius 11-Jan-12 11:27am

Thanks :)

Prasad Guduri 5-Nov-12 7:30am

Thank You....!!!!

Wendelius 6-Nov-12 5:34am

You're welcome :)

Ashish Bhujbal · Accepted Answer · 2012-01-10T17:22:00

Solution 2

Hi Prasad,

Even if you are passing empty string for text box txt_userid,
then also it will give same error.
So try your original code with some numeric value.

Posted 10-Jan-12 17:22pm

Ashish Bhujbal

Comments

Prasad Guduri 5-Nov-12 7:30am

Thank You....!!!!