Cant figure out how to resovle error message "input string was not in a correct forma

[wilnicm]

dglienna
myVal = textBox1.Text;
numTxt1 = int.Parse(myVal); This is the line that is throwing the error. I debugged it.
It seems like the value coming from the textbox is Null or "" blank even after entering a value in such as 1 or 22 eg.. I don't know why its keep saying that the value in the textbox is null or blank when it should be the value that i entered into it..