Only assignment, call, increment, decrement, and new object expressions can be used as a statement

Question

I created a class called Checker. This is the code:

namespace WindowsFormsApplication1
{ 
    public class Checker
    {
        int CheckAdminEdit(Object Temp,int counter,int allow)
        {
            int _counter = counter;
            int _allow = allow;
            Admin _Temp = Temp as Admin;

            foreach (Control c in _Temp.edit_admin.Controls)
            {
                if (c is TextBox)
                {
                    TextBox textBox = c as TextBox;
                    if (textBox.Text.Equals(string.Empty))
                    {
                        _Temp.errorProvider1.SetIconPadding(textBox, 0);
                         _Temp.errorProvider1.SetError(textBox, "Field Empty");
                        _allow++;
                    }
                    else
                    {
                        _Temp.errorProvider1.SetIconPadding(textBox, 666);
                        if (textBox.Name == "textBox6")
                        {
                            if( CheckEmail(textBox.Text))
                                _Temp.errorProvider2.SetIconPadding(textBox, 666);
                            else
                            {
                                _Temp.errorProvider2.SetError(textBox, "Invalid email syntax");
                                _counter++;
                            }
                        }
                    }
                }
            }

            return (allow + counter);
        }

        private bool CheckEmail(string EmailAddress)
        {
            string strPattern = "^([0-9a-zA-Z]([-.\\w]*[0-9a-zA-Z])*@([0-9a-zA-Z][-\\w]*[0-9a-zA-Z]\\.)+[a-zA-Z]{2,9})$";

            if (System.Text.RegularExpressions.Regex.IsMatch(EmailAddress, strPattern))
                return true;

            return false;
        }
    }
}

and in my form I'm trying to declare the class with :

Checker try = new Checker;

but the first Checker in underlined also the try the = sign and the ; sign saying that Only assignment, call, increment, decrement, and new object expressions can be used as a statement. Sorry if this is hard to understand, but I'm very thankful to those who can help:D

Answer 1

You haven't used parenthesis () for calling constructor after new operator. That's why you are getting Only assignment, call, increment, decrement, and new object expressions can be used as a statement error.

Moreover try is a keyword which you cannot use as variable name.

You can do this

Checker @try = new Checker();

or

Checker _try = new Checker();

In that case you will have to access it like this

@try._counter = 0;

or

_try._counter = 0;

Answer 2

try this:

Checker _try = new Checker();

Answer 3

try is a keyword, you should use another name for the object (or something like _try)