how to listbox with checklistbox in C# windows forms

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i did Populate the Listbox with Username and checklistbox with formsNames.

when user click the 2 or 3 forms than this must save into table.

when i was saving the data to the table for the Paticluar Field

userId is integer type.
but i dont how to do??
i m getting the error input string was not correct format
plz tell me how to insert data into the table

objvo.UserId = Convert.ToInt32(UserListBox.SelectedValue.ToString());

Thanks for advance

Posted 23-Jul-12 2:54am

sadhana4

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dimpledevani 23-Jul-12 9:02am

what is data's datatype of your listbox??

sadhana4 23-Jul-12 9:06am

UserListBox.DisplayMember = "UserName";
UserListBox.ValueMember = "UserId";
UserListBox.DataSource = dt;
UserName is string

dimpledevani 23-Jul-12 9:08am

Have you debugged on the line objvo.UserId = Convert.ToInt32(UserListBox.SelectedValue.ToString());
and saw if the UserListBox.SelectedValue contains anything

sadhana4 23-Jul-12 9:09am

yes it contain the name of user Janki

dimpledevani 23-Jul-12 9:11am

It contained the name of user and not its UserID??

sadhana4 23-Jul-12 9:32am

yes but how to stored the Id of User into the object.

sadhana4 23-Jul-12 9:36am

i m also trying the selected Index but did not get me any
result.it selectedIndex showing value zero.

sadhana4 23-Jul-12 9:46am

i find out my mistake. i got solution

dimpledevani 24-Jul-12 0:47am

Its ok, Good you found out

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