我想在datagridview标题中增加日期

Posted 2021-05-04

我正在研究考勤软件我面临的一个问题是我想在每个标题上增加日期。

在这里你可以看到我的datagridview：https://imgur.com/a/hP0Yedo

实际上，我想显示整个月的出勤率，我想从datetimepicker获得日期和日期。

拜托，伙计们，请帮我解决一下，或者告诉我怎么办呢

谢谢

这是我的代码：

int nnnnn2 = 0;

        private void dataGridView4_Paint(object sender, PaintEventArgs e)
        {
            nnnnn2 = DateTime.DaysInMonth(dateTimePicker1.Value.Year, dateTimePicker1.Value.Month);
            string[] weeks = new string[nnnnn2];
            string[] date = new string[nnnnn2];

            for (int i = 0; i < nnnnn2;i++)
            {
                newvar = dateTimePicker2.Text;
                //newvar = (newvar.ToString().Substring(0, newvar.ToString().Length - 11));
                DateTime dt = DateTime.Parse(newvar);
                weeks[i] = dt.DayOfWeek.ToString();
                date[i] = newvar;
            }

            for (int j = 0; j < (weeks.Count()); j += 3)
            {
                Rectangle r1 = this.dataGridView4.GetCellDisplayRectangle(j, -1, true);
                int w2 = this.dataGridView4.GetCellDisplayRectangle(j + 1, -1, true).Width;
                r1.X += 1;
                r1.Y += 1;
                r1.Width = r1.Width * 3 - 2;
                r1.Height = r1.Height / 2 - 2;
                e.Graphics.FillRectangle(new SolidBrush(this.dataGridView4.ColumnHeadersDefaultCellStyle.BackColor), r1);
                StringFormat format = new StringFormat();
                format.Alignment = StringAlignment.Center;
                format.LineAlignment = StringAlignment.Center;
                e.Graphics.DrawString(date[j / 3] + "
" + weeks[j / 3],
                this.dataGridView4.ColumnHeadersDefaultCellStyle.Font,
                new SolidBrush(this.dataGridView4.ColumnHeadersDefaultCellStyle.ForeColor),
                r1,
                    format);
            }
        }

答案

我自己解决了，这是解决方案：

private void dataGridView4_Paint(object sender, PaintEventArgs e)
        {
            var startDate = dateTimePicker2.Value.Date;
            var endDate = dateTimePicker1.Value.Date;
            List<string> weeks = new List<string>();
            List<string> dates = new List<string>();
            while (startDate <= endDate)
            {
                weeks.Add(startDate.DayOfWeek.ToString());
                dates.Add(startDate.Date.ToString());
                startDate = startDate.AddDays(1);

            }
            for (int j = 0; j < (weeks.Count() * 3); j += 3)
            {
                Rectangle r1 = this.dataGridView4.GetCellDisplayRectangle(j, -1, true);
                int w2 = this.dataGridView4.GetCellDisplayRectangle(j + 1, -1, true).Width;
                r1.X += 1;
                r1.Y += 1;
                r1.Width = r1.Width * 3 - 2;
                r1.Height = r1.Height / 2 - 2;
                e.Graphics.FillRectangle(new SolidBrush(this.dataGridView4.ColumnHeadersDefaultCellStyle.BackColor), r1);
                StringFormat format = new StringFormat();
                format.Alignment = StringAlignment.Center;
                format.LineAlignment = StringAlignment.Center;

                e.Graphics.DrawString(dates[j / 3]+"
"+weeks[j / 3],
                this.dataGridView4.ColumnHeadersDefaultCellStyle.Font,
                new SolidBrush(this.dataGridView4.ColumnHeadersDefaultCellStyle.ForeColor),
                r1,
                    format);
            }
        }