How can i get a record from my combobox into a string variable

I have c# application in which i am trying to get records from
a combobox into a string variable.

The combo loads at Form load  ( see screen below )


I the tried to select any of the records into a string variable  and some how
my string variable instead of  having data from the combo has an error  statement
about my Model  (see error page )


I then tried to  use the debugger to find out if the record i selected is somewhere in memory
and indeed it showed up  (see  debugger output)


How do i get the combo record out to my string variable.

Below is the Script that i am using to select the record from the combo and putting it in a string
variable

[private void glTRANSCurrencyValue_SelectedIndexChanged(object sender, EventArgs e)
        {
            // Setting index to 0 at form load ensure that script below is not processed during combo initial load
            if (this.glTRANSCurrencyValue.SelectedIndex != 0)
            {
                string phrase = glTRANSCurrencyValue.SelectedItem.ToString();
                string[] words = phrase.Split(' ');
                int i = 0;
                foreach (var word in words)
                {
                    i += 1;

                    if (i == 1)
                    {
                        decimal var1 = Convert.ToDecimal($"{word}");
                        glTRANSExchrateValue.Text = Convert.ToString(var1);

                    }

                }
            }
        }[/code]

How do i get the combo record into the string variable


Thanks

Olukay