tbf/DataStreamInterfaceTest/GetDblValueDlg.cs

using System;
using System.Globalization;
using System.Windows.Forms;

namespace DataStreamInterfaceTest
{
    public partial class GetDblValueDlg : Form
    {
        public double DblValue;

        double lowerLimit;
        double upperLimit;


        public GetDblValueDlg()
            : this("Enter flow in [m3/h] please")
        {
        }

        public GetDblValueDlg(string title)
            : this(title, 0, 100.0)
        {
        }

        public GetDblValueDlg(string title, double lowerLimit, double upperLimit)
        {
            InitializeComponent();
            this.Text = title;
            this.lowerLimit = lowerLimit;
            this.upperLimit = upperLimit;
        }


        private void okButton_Click(object sender, EventArgs e)
        {
            double val;
            if (TryParseUDouble(valueTextBox.Text, out val))
            {
                DblValue = val;
                DialogResult = DialogResult.OK;
                Close();
            }
            else
            {
                MessageBox.Show("Invalid value");
                DialogResult = DialogResult.None;
            }
        }

        /// <summary>
        /// Parse an unsigned double number
        /// </summary>
        bool TryParseUDouble(string text, out double result)
        {
            return double.TryParse(text, NumberStyles.AllowDecimalPoint, CultureInfo.CurrentCulture, out result) ||
                   double.TryParse(text, NumberStyles.AllowDecimalPoint, CultureInfo.InvariantCulture, out result);
        }
    }
}