C#如何实现日历效果

这篇文章主要讲解了“C#如何实现日历效果”，文中的讲解内容简单清晰，易于学习与理解，下面请大家跟着小编的思路慢慢深入，一起来研究和学习“C#如何实现日历效果”吧！

展示：

主要代码：

public partial class calendar : Form
    {
        public calendar()
        {
            InitializeComponent();
        }
        int year, month;

        private void textBoxMonth_TextChanged(object sender, EventArgs e)
        {
            if (textBoxMonth.Text == "")
                month = 0;
            month = Convert.ToInt32(textBoxMonth.Text);
        }

        private void buttonSearch_Click(object sender, EventArgs e)
        {
            seach();
        }

        private void textBoxYear_TextChanged(object sender, EventArgs e)
        {
            year = Convert.ToInt32(textBoxYear.Text);
        }

        private void buttonLastMonth_Click(object sender, EventArgs e)
        {
            int year = Convert.ToInt32(textBoxYear.Text);
            int month=Convert.ToInt32(textBoxMonth.Text);
            if (year == 1 && month == 1)
            {
                year = 1;
                month = 1;
            }
            else
            {
                if (month > 1)
                {
                    month--;
                    textBoxMonth.Text = Convert.ToString(month);
                    seach();
                }
                else
                {
                    textBoxMonth.Text = Convert.ToString(12);
                    year--;
                    textBoxYear.Text = Convert.ToString(year);
                    seach();
                }
            }
        }

        private void buttonNextMonth_Click(object sender, EventArgs e)
        {
            int month = Convert.ToInt32(textBoxMonth.Text);
            if (month < 12)
            {
                month++;
                textBoxMonth.Text = Convert.ToString(month);
                seach();
            }
            else
            {
                textBoxMonth.Text = Convert.ToString(1);
                int year = Convert.ToInt32(textBoxYear.Text);
                year++;
                textBoxYear.Text = Convert.ToString(year);
                seach();
            }
        }

        private void buttonLastYear_Click(object sender, EventArgs e)
        {
            int year = Convert.ToInt32(textBoxYear.Text);
            if(year>1)
            {
                year--;
                textBoxYear.Text = Convert.ToString(year);
                textBoxMonth.Text = Convert.ToString(1);
                seach();
            }
        }

        private void buttonNextYear_Click(object sender, EventArgs e)
        {
            int year = Convert.ToInt32(textBoxYear.Text);
            year++;
            textBoxYear.Text = Convert.ToString(year);
            textBoxMonth.Text = Convert.ToString(1);
            seach();
        }

        public void seach()
        {
            if (textBoxYear.Text == "" || textBoxMonth.Text == "")
                labelAlert.Text = "请输入年份及月份";
            else
            if (Convert.ToInt32(textBoxYear.Text) <= 0 || Convert.ToInt32(textBoxMonth.Text) <= 0 || Convert.ToInt32(textBoxMonth.Text) > 12)
                labelAlert.Text = "输入的年份与月份不能小于0，月份不能大于12";
            else
            {
                textBoxDemonstrate.Text = "周一    周二    周三    周四    周五    周六    周日" + "\r\n" + "\r\n" + "\r\n";
                textBoxDemonstrate.Text += compute(year, month);
            }
        }

        public bool leap_Year(int year)
        {
            if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0))
                return true;
            else
                return false;
        }


        public string compute(int year, int month)
        {
            int days1 = (year - 1) * 365;
            for (int i = 1; i < year; i++)
            {
                if (leap_Year(i))
                    days1++;
            }
            int[] monthArray = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
            if (leap_Year(year))
                monthArray[1] = 29;
            int days2 = 0, monthDays = monthArray[month - 1];
            for (int i = 0; i < month - 1; i++)
            {
                days2 += monthArray[i];
            }
            int days = days1 + days2;
            string strCalendar="";
            for (int i = 0; i < days % 7; i++)
                strCalendar += "        ";
            for(int i=1;i<monthDays+1;i++)
            {
                if (i < 10)
                    strCalendar += " " + i + "      ";
                else
                    strCalendar += Convert.ToString(i + "      ");
                if ((i+ days  % 7) % 7 == 0)
                    strCalendar += "\r\n"+"\r\n" + "\r\n";
            }
            return strCalendar;
        }
}

感谢各位的阅读，以上就是“C#如何实现日历效果”的内容了，经过本文的学习后，相信大家对C#如何实现日历效果这一问题有了更深刻的体会，具体使用情况还需要大家实践验证。这里是亿速云，小编将为大家推送更多相关知识点的文章，欢迎关注！