private void textBox1_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Enter)
{
e.Handled = true;
List <DataGridViewRow> list = dataGridView1.ToList().Where(x => x.Cells[0].Value != null).ToList();
var variables = list.ToDictionary(x => ((string)x.Cells[0].Value)[0], x => ParseExpression.Parse((string)x.Cells[1].Value, null));
var bindings = variables.ToDictionary(x => x.Key, x => (IExpression <double>) new Variable(x.Key, variables));
var expr = ParseExpression.Parse(textBox1.Text, bindings);
listBox1.Items.Add(textBox1.Text + ": " + expr.Evaluate());
textBox1.Clear();
}
}
private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
{
if (listBox1.SelectedIndex < 0)
{
return;
}
List <DataGridViewRow> list = dataGridView1.ToList().Where(x => x.Cells[0].Value != null).ToList();
var variables = list.ToDictionary(x => ((string)x.Cells[0].Value)[0], x => ParseExpression.Parse((string)x.Cells[1].Value, null));
var bindings = variables.ToDictionary(x => x.Key, x => (IExpression <double>) new Variable(x.Key, variables));
var expr = ParseExpression.Parse((string)listBox1.SelectedItem.ToString().Split(':')[0], bindings);
treeView1.Nodes.Clear();
treeView1.Nodes.Add(NodeFromExpr(expr));
}