private void buttonDelete_Click(object sender, EventArgs e)
{
HistoryTextBox.Clear();
ResolutionTextBox.Text = "0";
resolution = 0;
action = 0;
dot = false;
}
void ClearMethod()
{
NameTextBox.Clear();
AgeTextBox.Clear();
AddressTextBox.Clear();
PhoneTextBox.Clear();
HistoryTextBox.Clear();
}
private void GridButton_Click(object sender, RoutedEventArgs e)
{
Button btn = e.Source as Button;
string value = btn.Content.ToString();
switch (value)
{
case "C":
ExpressionTextBox.Text = "0";
break;
case "=":
string curExpression = ExpressionTextBox.Text;
try
{
NCalc.Expression expression = new NCalc.Expression(ExpressionTextBox.Text);
string expressionValue = expression.Evaluate().ToString();
ExpressionTextBox.Text = expressionValue;
if (!curExpression.Equals(expressionValue))
{
HistoryTextBox.AppendText(curExpression + "=" + expressionValue + "\n");
}
}
catch
{
ExpressionTextBox.Text = ERR_MESSAGE;
}
break;
case "Clear history":
HistoryTextBox.Text = "";
break;
default:
if (ExpressionTextBox.Text.Equals(ERR_MESSAGE))
{
ExpressionTextBox.Text = "0";
}
ExpressionTextBox.Text = ExpressionTextBox.Text.TrimStart('0') + value;
break;
}
}
