private void button1_Click(object sender, EventArgs e)
{
try
{
strFormatobj = textBoxInput.Text;
FormatExpression obj = new FormatExpression();
obj.str = strFormatobj;
str = obj.FormatStr();
}
catch (Exception ex)
{
MessageBox.Show(
ex.Message,
"An exception has occurred");
}
try
{
string strResult = null;
using (UserContext db = new UserContext())
{
Expression exp1 = new Expression {
ExpressionStr = str
};
db.Expressions.Add(exp1);
db.SaveChanges();
var users = db.Expressions;
var lastResult = db.Expressions.OrderBy(b => b.Id)
.Skip(Math.Max(0, db.Expressions.OrderBy(b => b.Id).Count() - 5));
foreach (Expression exp in lastResult)
{
strResult += exp.Id.ToString() + ". " + exp.ExpressionStr + "\r\n";
}
}
textBoxOutput.Text = strResult;
}
catch (Exception ex)
{
MessageBox.Show(
ex.Message,
"An exception has occurred");
}
}
static string Eval(string exp)
{
return(FormatExpression.Eval(new DummyEvaluator(), exp));
}
