/// <summary>
/// Attempts to validate the input by retrieving it from <see cref="InputManipulation"/> and passing it through <see cref="ValidInput(string, out string)"/>
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void UserInputText_Validating(object sender, System.ComponentModel.CancelEventArgs e)
{
// error message that's defined and presented to the user when an error occurs.
string errorMsg;
// if the function ValidInput returns false, it returns the error message provided
if (!ValidInput(InputManipulation(), out errorMsg))
{
// Cancel the event and select the text to be corrected by the user.
e.Cancel = true;
UserInputText.Select(0, UserInputText.Text.Length);
// Set the ErrorProvider error with the text to display.
this.equationErrorProvider.SetError(UserInputText, errorMsg);
}
}
/// <summary>
/// Focuses the user input text.
/// Basically makes it so anytime a button is clicked
/// the cursor stays in the user input textbox.
/// </summary>
private void FocusInputText()
{
//Focusing the cursor on the user input text box
UserInputText.Focus();
}
/// <summary>
/// Focuses the user input text
/// </summary>
private void FocusInputText()
{
UserInputText.Focus();
}
private void button17_Click(object sender, EventArgs e)
{
this.UserInputText.Text = string.Empty;
UserInputText.Focus();
}