input string is not correct format

Question

3.50/5 (2 votes)

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C#

int selcetedComboValue = Int32.Parse(comboBox1.SelectedItem.ToString());

Posted 11-Nov-12 23:49pm

Master Vinu

Updated 12-Nov-12 2:45am

Mohamed Mitwalli

v2

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Comments

Herman<T>.Instance 12-Nov-12 5:51am

have you debugged? what is the value of comboBox1.SelectedItem?

Mohd. Mukhtar 12-Nov-12 6:02am

use int selcetedComboValue = Int32.Parse(comboBox1.SelectedItem.Value.ToString());

AmitGajjar 12-Nov-12 6:06am

What exactly you want to do ?

4 solutions

Solution 2

As the error message has already suggested you, the input is not correct and it can not be converted in to an int.

The best thing you can do is put a break-point on this line of code and then see what is the value you have selected comboBox1.

As per your comments, you are having values like 1-3, 5-6. If you want both values, you will have to have it in two different integer variables as shown below

C#

string[] splitValues = Int32.Parse(comboBox1.SelectedItem.Split('-');
int firstValue = Int32.Parse(splitValues[0]);
int firstValue = Int32.Parse(splitValues[1]);

Hope that helps.
Milind

Posted 11-Nov-12 23:55pm

MT_

Updated 12-Nov-12 1:05am

v2

Comments

Master Vinu 12-Nov-12 5:57am

0

MT_ 12-Nov-12 5:59am

If it is NOT integer i.e. 1-3 and 5-6, how can you convert to integar?

Master Vinu 12-Nov-12 5:59am

what i hav to do for that?

Herman<T>.Instance 12-Nov-12 6:04am

has your combobox a SelectedIndex?

MT_ 12-Nov-12 6:45am

Well if customer selects 1-3, what is the value you want ? 1 or 3 ?

Solution 4

Hi Vinayak,

Please note that you as per your input you are conveting wrong value into integer.

Your combobox values are in the below form

1-5
6-10
11-20

to convet this value into integer you need to split these value into two part by separetor "-". And then you can convert this value into integer.

But the question is what value you want from this combobox.

Posted 12-Nov-12 0:27am

Mohd. Mukhtar

Updated 12-Nov-12 0:29am

v2

Comments

Master Vinu 12-Nov-12 6:29am

i need 1-5 from combobox

Herman<T>.Instance 12-Nov-12 6:51am

do you use a multiselect combobox?

Mohd. Mukhtar 12-Nov-12 6:35am

you can get this value from the combobox as below.
string selectedValue = comboBox1.SelectedItem.ToString();

But you can not convert it directly into integer.

Solution 5

Remove all non-int characters from the string you are converting. If you have a ComboBox item which contains non-int characters but you need the int part then use a character array and passing the character array(of the string to be converted) remove the non-int characters and store the final string to be converted in a new variable. Then convert this new string you got containing only int-characters.

Posted 12-Nov-12 6:19am

Ritwesh

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Anele Ngqandu · Accepted Answer · 2012-11-12T00:02:00

Solution 3

Hi
try

C#

int selcetedComboValue = Convert.ToInt32(comboBox1.SelectedItem.ToString());

Posted 12-Nov-12 0:02am

Anele Ngqandu

Comments

Master Vinu 12-Nov-12 6:06am

same error :

Anele Ngqandu 12-Nov-12 7:04am

int selcetedComboValue = Convert.ToInt32(comboBox1.SelectedValue.ToString());