/// <summary>
/// Responds to button click by pulling data from text boxes and calling appropriate method
/// </summary>
/// <param name="sender">The object that send the event argument.</param>
/// <param name="e">The event argument.</param>
private void EulerButton_Click(object sender, EventArgs e)
{
FunctionEval func = new FunctionEval();
try
{
if (!string.IsNullOrEmpty(FunctionBox.Text) && !string.IsNullOrEmpty(InitialPointBox.Text) && !string.IsNullOrEmpty(EndValueBox.Text))
{
String[] values = InitialPointBox.Text.Replace("(", "").Replace(")", "").Split(',');
double x = Double.Parse(values[0].Trim());
double y = Double.Parse(values[1].Trim());
if (this.Text == "Euler's Method")
{
ResultBox.Text = func.Euler(FunctionBox.Text, x, y, Double.Parse(EndValueBox.Text)).ToString();
}
else if (this.Text == "Heun's Method")
{
ResultBox.Text = func.Heun(FunctionBox.Text, x, y, Double.Parse(EndValueBox.Text)).ToString();
}
}
else
{
ResultBox.Text = "All data required";
}
}
catch (Exception ex)
{
ResultBox.Text = "Error: " + ex;
}
}
/// <summary>
/// Performs a function evaluation on the math string that has been built prior to this method call
/// </summary>
/// <param name="sender">The sender that sent the event argument</param>
/// <param name="e">The event argument</param>
private void buttonEquals_Click(object sender, EventArgs e)
{
if (!string.IsNullOrEmpty(resultBox.Text))
{
try
{
FunctionEval function = new FunctionEval();
double result_number = function.Evaluate(result);
result = result_number.ToString();
resultBox.Text = result;
}
catch (Exception ex)
{
resultBox.Text = "Error: " + ex;
}
}
}
/// <summary>
/// Performs a function evaluation on the math string that has been built prior to this method call
/// </summary>
/// <param name="sender">The sender that sent the event argument</param>
/// <param name="e">The event argument</param>
private void resultBox_KeyPress(object sender, KeyPressEventArgs e)
{
if (e.KeyChar == 13)
{
result = resultBox.Text;
if (!string.IsNullOrEmpty(result))
{
try
{
FunctionEval function = new FunctionEval();
double result_number = function.Evaluate(result);
resultBox.Text = result_number.ToString();
}
catch (Exception ex)
{
resultBox.Text = "Error: " + ex;
}
}
}
}
private void buttonEval_Click(object sender, EventArgs e)
{
if (string.IsNullOrEmpty(FunctionBox.Text))
{
labelResult.Text = "Function box is empty";
}
else if (string.IsNullOrEmpty(VarBox.Text))
{
labelResult.Text = "Variable box is empty";
}
else
{
try
{
FunctionEval func = new FunctionEval();
labelResult.Text = "f(" + VarBox.Text + ") = " + func.Evaluate(FunctionBox.Text, Double.Parse(VarBox.Text));
}
catch (Exception ex)
{
labelResult.Text = ex.ToString();
}
}
}