private void clearErrorProvider()
{
try
{
errorProvider1.SetError(txtMortgageAmount, "");
errorProvider1.SetError(txtInterestRate, "");
errorProvider1.SetError(txtMortgageTerm, "");
errorProvider1.SetError(rtfAmortTable, "");
}
catch (System.Exception ex)
{
InputUtilities.clearException(ex);
}
}
private void txtInput_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e)
{
TextBox txtBox;
//if a navigation key do not react
try
{
txtBox = (TextBox)(sender);
if (InputUtilities.isNavigationKey(e))
{
errorProvider1.SetError(txtBox, "");
//allow navigation keys to be entered
nonNumberEntered = false;
e.Handled = false;
}
else if (InputUtilities.isNumericKey(e))
{
errorProvider1.SetError(txtBox, "");
nonNumberEntered = false;
e.Handled = false;
}
else
{
string errorMessage = "Please enter only numeric values for the " + txtBox.Tag;
errorProvider1.SetError(txtBox, errorMessage);
//stop value form being entered since it is non-numeric
nonNumberEntered = true;
e.Handled = true;
}
}
catch (Exception ex)
{
//do nothing, catch the error later before calculations are done
InputUtilities.clearException(ex);
}
}