digitaltimeformateditorform.cs

中文名：Windows Forms 程序设计 英文名：Windows Forms Programming in c# 作者： Chris Sells 翻译： 荣耀 蒋贤哲 出版社：人民

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

namespace AlarmClockControlLibrary {
  partial class DigitalTimeFormatEditorForm : Form {

    private DateTime exampleDateTime1 = new DateTime(2005, 12, 31, 12, 59, 59);
    private DateTime exampleDateTime2 = new DateTime(2005, 1, 1, 1, 1, 1);
    private string digitalTimeFormat = "dd/MM/yyyy hh:mm:ss tt";

    public DigitalTimeFormatEditorForm() {
      InitializeComponent();
    }

    public string DigitalTimeFormat {
      get { return this.digitalTimeFormat; }
      set { this.digitalTimeFormat = value; }
    }

    private void DigitalTimeFormatEditorForm_Load(object sender, EventArgs e) {

      // Set the textbox from the property
      formatText.Text = this.digitalTimeFormat;

      // Build the examples based on the format
      example1Label.Text = this.exampleDateTime1.ToString(formatText.Text);
      example2Label.Text = this.exampleDateTime2.ToString(formatText.Text);

      // Build the list
      DataTable lst = new DataTable("List");
      lst.Columns.Add(new DataColumn("Value", typeof(string)));
      lst.Columns.Add(new DataColumn("Display", typeof(string)));
      lst.Rows.Add(new Object[] { "/", "/  (Date Separator)" });
      lst.Rows.Add(new Object[] { ":", ":  (Time Separator)" });
      lst.Rows.Add(new Object[] { "d", "d  (Day: 1-31)" });
      lst.Rows.Add(new Object[] { "dd", "dd  (Day: 01-31)" });
      lst.Rows.Add(new Object[] { "ddd", "ddd  (Day Mon-Sun)" });
      lst.Rows.Add(new Object[] { "H", "H  (Hour: 0-23)" });
      lst.Rows.Add(new Object[] { "h", "h  (Hour: 1-12)" });
      lst.Rows.Add(new Object[] { "HH", "HH  (Hour: 00-23)" });
      lst.Rows.Add(new Object[] { "hh", "hh  (Hour: 01-12)" });
      lst.Rows.Add(new Object[] { "M", "M   (Month: 1-12)" });
      lst.Rows.Add(new Object[] { "m", "m  (Minute: 0-59)" });
      lst.Rows.Add(new Object[] { "mm", "mm  (Minute: 00-59)" });
      lst.Rows.Add(new Object[] { "MM", "MM  (Month: 01-12)" });
      lst.Rows.Add(new Object[] { "MMM", "MMM  (Month: Jan-Dec)" });
      lst.Rows.Add(new Object[] { "s", "s  (Second: 0-59)" });
      lst.Rows.Add(new Object[] { "ss", "ss  (Second: 00-59)" });
      lst.Rows.Add(new Object[] { "tt", "tt  (AM/PM)" });
      lst.Rows.Add(new Object[] { "y", "y  (Year: 1-99)" });
      lst.Rows.Add(new Object[] { "yy", "yy  (Year: 01-99)" });
      lst.Rows.Add(new Object[] { "yyyy", "yyyy  (Year: 2001-2099)" });
      lstFormatSpecifiers.DataSource = lst;
      lstFormatSpecifiers.ValueMember = "Value";
      lstFormatSpecifiers.DisplayMember = "Display";
    }

    private void okButton_Click(object sender, System.EventArgs e) {
      this.digitalTimeFormat = formatText.Text;
    }

    private void addFormatSpecifierButton_Click(object sender, System.EventArgs e) {
      // Add selected format specifier
      if( lstFormatSpecifiers.Text != "" ) {
        formatText.Text += lstFormatSpecifiers.SelectedValue;
        formatText.Select(formatText.Text.Length, 0);
        formatText.Focus();
      }
    }

    private void formatText_TextChanged(object sender, System.EventArgs e) {
      try {
        example1Label.Text = this.exampleDateTime1.ToString(formatText.Text);
        example2Label.Text = this.exampleDateTime2.ToString(formatText.Text);
      }
      catch {
        example1Label.Text = "Date/Time format specifier invalid";
        example2Label.Text = "Date/Time format specifier invalid";
      }
    }
  }
}