GraphLimitsDialog.cs

Go to the documentation of this file.

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace SeciControls.Graphing
{
    public partial class GraphLimitsDialog : Form
    {
        public Double Min = Double.NaN;
        public Double Max = Double.NaN;

        public GraphLimitsDialog()
        {
            InitializeComponent();
        }

        private void GraphLimitsDialog_Load(object sender, EventArgs e)
        {
            if (Double.IsNaN(Min))
            {
                chkMin.Checked = true;
                txtMin.Text = "0";
            }
            else
            {
                chkMin.Checked = false;
                txtMin.Text = Min.ToString();
            }

            if (Double.IsNaN(Max))
            {
                chkMax.Checked = true;
                txtMax.Text = "1";
            }
            else
            {
                chkMax.Checked = false;
                txtMax.Text = Max.ToString();
            }
        }

        private void chkMin_CheckedChanged(object sender, EventArgs e)
        {
            txtMin.Enabled = !chkMin.Checked;
        }

        private void chkMax_CheckedChanged(object sender, EventArgs e)
        {
            txtMax.Enabled = !chkMax.Checked;
        }

        private void btnOK_Click(object sender, EventArgs e)
        {
            if (chkMin.Checked)
            {
                Min = Double.NaN;
            }
            else
            {
                Double result;
                if (!Double.TryParse(txtMin.Text, out result))
                {
                    MessageBox.Show("Minimum value is not valid", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    return;
                }

                Min = result;
            }

            if (chkMax.Checked)
            {
                Max = Double.NaN;
            }
            else
            {
                Double result;
                if (!Double.TryParse(txtMax.Text, out result))
                {
                    MessageBox.Show("Maximum value is not valid", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    return;
                }

                Max = result;
            }

            if (!chkMin.Checked && !chkMax.Checked && Min == Max)
            {
                MessageBox.Show("Minimum and Maximum values must be different!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }

            if (Min > Max)
            {
                Double temp = Max;
                Max = Min;
                Min = temp;
            }

            DialogResult = DialogResult.OK;
            Close();
        }
    }
}