要求:文本框中能手动输入数字,向上箭头根据鼠标位置给年月日递增,向下箭头递减
一:页面加载时:
private void FlatDatePicker_Load(object sender, EventArgs e) { txtMain.Text = DateTime.Now.ToString("MM/dd/yyyy"); txtMain.Location = new Point(10,19); txtMain.Width = 150; btnUp.Width = 20; btnUp.Height = txtMain.Height / 2; btnDown.Width = 20; btnDown.Height = txtMain.Height / 2; this.Width = txtMain.Width + 20; this.Height = txtMain.Height; btnUp.Location = new Point(txtMain.Width, 0); btnDown.Location = new Point(txtMain.Width, btnUp.Height); }
二、按下Delete键时不允许删除"/"
private void txtMain_KeyDown(object sender, KeyEventArgs e) { switch (e.KeyCode) { //不允许Delete键删除‘/‘ case Keys.Delete: int selectIndex = txtMain.SelectionStart; int selectLength = txtMain.SelectionLength; int xiegangIndex1 = txtMain.Text.IndexOf(‘/‘); int xiegangIndex2 = txtMain.Text.LastIndexOf(‘/‘); bool condition1 = selectLength == 0 && (selectIndex == xiegangIndex1 || selectIndex == xiegangIndex2); bool condition2 = selectLength > 0 && txtMain.Text.Substring(selectIndex, selectLength).Contains("/"); if (condition1 || condition2) { e.Handled = true; } break; default: break; } }
三、按下键时排除不合适字符
private void txtMain_KeyPress(object sender, KeyPressEventArgs e) { #region 不合适字符 if (!Char.IsNumber(e.KeyChar) && !Char.IsPunctuation(e.KeyChar) && !Char.IsControl(e.KeyChar)) { e.Handled = true;//消除不合适字符 } else if (Char.IsPunctuation(e.KeyChar)) { if (e.KeyChar != ‘.‘ || this.Text.Length == 0)//小数点 { e.Handled = true; } if (this.Text.LastIndexOf(‘.‘) != -1) { e.Handled = true; } } else if (txtMain.Text == "") { e.Handled = true; } #endregion #region 按下数字键 数字超过指定的年月日则无效 if (Char.IsNumber(e.KeyChar))//按下数字键 { int selectedIndex = txtMain.SelectionStart; int selectedLength = txtMain.SelectionLength; int monthLength = txtMain.Text.Split(‘/‘)[0].Length; int dayLength = txtMain.Text.Split(‘/‘)[1].Length; int yearLength = txtMain.Text.Split(‘/‘)[2].Length; int monthIndex = txtMain.Text.IndexOf(‘/‘, 0, 3); int dayIndex = txtMain.Text.IndexOf(‘/‘, 3); int month = DateTime.Now.Month; int day = DateTime.Now.Day; int year = DateTime.Now.Year; if (txtMain.SelectedText.Contains("/")) { e.Handled = true; } else if (selectedIndex <= monthIndex) {//修改月份 #region 修改月份 if (selectedIndex == 0) { if (selectedLength == 0) { if (monthLength == 1) { int.TryParse(e.KeyChar.ToString() + txtMain.Text.Substring(0, 1), out month); } else if (monthLength == 2) { e.Handled = true; } } else if (selectedLength == 1) { if (monthLength == 1) { int.TryParse(e.KeyChar.ToString(), out month); } else if (monthLength == 2) { int.TryParse(e.KeyChar.ToString() + txtMain.Text.Substring(1, 1), out month); } } else if (selectedLength == 2) { int.TryParse(e.KeyChar.ToString(), out month); } } else if (selectedIndex == 1) { if (selectedLength == 0) { if (monthLength == 1) { int.TryParse(txtMain.Text.Substring(0, 1) + e.KeyChar.ToString(), out month); } else if (monthLength == 2) { e.Handled = true; } } else if (selectedLength == 1) { int.TryParse(txtMain.Text.Substring(0, 1) + e.KeyChar.ToString(), out month); } } else if (selectedIndex == 2) { e.Handled = true; } if (month <= 0 || month >= 13) { e.Handled = true; } #endregion } else if (selectedIndex <= dayIndex) {//修改日期 #region 修改日期 if (selectedIndex == 3) { if (selectedLength == 0) { if (dayLength == 1) { int.TryParse(e.KeyChar.ToString() + txtMain.Text.Substring(3, 1), out day); } else if (dayLength == 2) { e.Handled = true; } } else if (selectedLength == 1) { if (dayLength == 1) { int.TryParse(e.KeyChar.ToString(), out day); } else if (dayLength == 2) { int.TryParse(e.KeyChar.ToString() + txtMain.Text.Substring(4, 1), out day); } } else if (selectedLength == 2) { int.TryParse(e.KeyChar.ToString(), out day); } } else if (selectedIndex == 4) { if (selectedLength == 0) { if (dayLength == 1) { int.TryParse(txtMain.Text.Substring(3, 1) + e.KeyChar.ToString(), out day); } else if (dayLength == 2) { e.Handled = true; } } else if (selectedLength == 1) { int.TryParse(txtMain.Text.Substring(3, 1) + e.KeyChar.ToString(), out day); } } else if (selectedIndex == 5) { e.Handled = true; } int.TryParse(txtMain.Text.Split(‘/‘)[0], out month); int.TryParse(txtMain.Text.Split(‘/‘)[2], out year); if ((month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) && day > 31) { e.Handled = true; } else if ((month == 4 || month == 6 || month == 9 || month == 11) && day > 30) { e.Handled = true; } if (DateTime.IsLeapYear(year) && month == 2 && day > 29) { e.Handled = true; } else if (!DateTime.IsLeapYear(year) && month == 2 && day > 28) { e.Handled = true; } #endregion } else {//修改年份 #region 修改年份 if (yearLength == 3) { int.TryParse(txtMain.Text.Substring(6, 3) + e.KeyChar.ToString(), out year); if (year < 1900) { e.Handled = true; //txtMain.Text = txtMain.Text.Split(‘/‘)[0] + "/" + txtMain.Text.Split(‘/‘)[1] + "/" + DateTime.Now.Year; } } else if (yearLength > 3 && selectedLength <= 0) { e.Handled = true; } #endregion } } #endregion #region 按下BackSpcae键 不允许删除"/" if (e.KeyChar == ‘\b‘) { int selectIndex = txtMain.SelectionStart; int selectlength = txtMain.SelectionLength; if (selectlength == 0 && selectIndex > 0) { string delStr = txtMain.Text.Substring(selectIndex - 1, 1); if (delStr == "/") { e.Handled = true; } } if (selectlength > 0) { string delStr = txtMain.Text.Substring(selectIndex, selectlength); if (delStr.Contains("/")) { e.Handled = true; } } } #endregion }
四、
private void txtMain_KeyUp(object sender, KeyEventArgs e) { int selectIndex = txtMain.SelectionStart; int month = 0; int.TryParse(txtMain.Text.Split(‘/‘)[0], out month); int day = 0; int.TryParse(txtMain.Text.Split(‘/‘)[1], out day); int year = 0; int.TryParse(txtMain.Text.Split(‘/‘)[2], out year); int xiegangIndex1 = txtMain.Text.IndexOf(‘/‘);//第一个‘/‘的位置 int xiegangIndex2 = txtMain.Text.LastIndexOf(‘/‘);//第二个‘/‘的位置 switch (e.KeyCode) { #region 松开左右键 case Keys.Left: if (selectIndex <= xiegangIndex1) { FillDay(); Fillyear(); } else if (selectIndex <= xiegangIndex2) { FillMonth(); Fillyear(); } else { FillMonth(); FillDay(); } txtMain.SelectionStart = selectIndex; break; case Keys.Right: if (selectIndex <= xiegangIndex1) { FillDay(); Fillyear(); } else if (selectIndex <= xiegangIndex2) { FillMonth(); Fillyear(); } else { FillMonth(); FillDay(); } break; #endregion case Keys.End: break; case Keys.Home: break; #region 上下键增减年月日 case Keys.Up: selectIndex++; if (selectIndex < 3) { if (month < 12) { month++; FillMonth(month); } txtMain.Select(0, 2); } else if (selectIndex < 6) { bool condition1 = (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) && day < 31; bool condition2 = (month == 4 || month == 6 || month == 9 || month == 11) && day < 30; bool condition3 = month == 2 && (DateTime.IsLeapYear(year) && day < 29 || !DateTime.IsLeapYear(year) && day < 28); if (condition1 || condition2 || condition3) { day++; FillDay(day); } txtMain.Select(3, 2); } else { if (year < 9999) { year++; Fillyear(year); } txtMain.Select(6, 4); } break; case Keys.Down: selectIndex--; if (selectIndex < 3) { if (month > 1) { month--; FillMonth(month); } txtMain.SelectionStart = 0; txtMain.Select(0, 2); } else if (selectIndex < 6) { if (day > 1) { day--; FillDay(day); } txtMain.SelectionStart = 3; txtMain.Select(3, 2); } else { if (year > 1900) { year--; Fillyear(year); } txtMain.SelectionStart = 6; txtMain.Select(6, 4); } break; #endregion case Keys.Delete: break; #region 松开数字键 case Keys.D0: case Keys.D1: case Keys.D2: case Keys.D3: case Keys.D4: case Keys.D5: case Keys.D6: case Keys.D7: case Keys.D8: case Keys.D9: case Keys.NumPad0: case Keys.NumPad1: case Keys.NumPad2: case Keys.NumPad3: case Keys.NumPad4: case Keys.NumPad5: case Keys.NumPad6: case Keys.NumPad7: case Keys.NumPad8: case Keys.NumPad9: if ((month > 1 || selectIndex > 1) && txtMain.Text.Split(‘/‘)[0].Length < 2 || (selectIndex == 2 && txtMain.Text.Split(‘/‘)[1].Length == 2)) { EidtDay(month); FillMonth(); txtMain.Select(3, 2); } if ((month == 2 && day > 2 || month != 2 && day > 3 || (selectIndex < 3 || selectIndex > 4)) && txtMain.Text.Split(‘/‘)[1].Length < 2 || (selectIndex == 5 && txtMain.Text.Split(‘/‘)[1].Length == 2)) { FillDay(); txtMain.Select(6, 4); } if (selectIndex > 6 && txtMain.Text.Split(‘/‘)[2].Length >= 4) { EidtDay(month, year); Fillyear(); } break; #endregion default: break; } }
五、
private void txtMain_Leave(object sender, EventArgs e) { FillMonth(); FillDay(); Fillyear(); }
六、
private void txtMain_MouseDown(object sender, MouseEventArgs e) { FillMonth(); FillDay(); Fillyear(); }
七、
private void btnUp_Click(object sender, EventArgs e) { int selectIndex = txtMain.SelectionStart; int month = 0; int.TryParse(txtMain.Text.Split(‘/‘)[0], out month); int day = 0; int.TryParse(txtMain.Text.Split(‘/‘)[1], out day); int year = 0; int.TryParse(txtMain.Text.Split(‘/‘)[2], out year); if (selectIndex < 3) { if (month < 12) { month++; FillMonth(month); } txtMain.Select(); txtMain.Select(0, 2); } else if (3 <= selectIndex && selectIndex < 6) { bool condition1 = (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) && day < 31; bool condition2 = (month == 4 || month == 6 || month == 9 || month == 11) && day < 30; bool condition3 = month == 2 && (DateTime.IsLeapYear(year) && day < 29 || !DateTime.IsLeapYear(year) && day < 28); if (condition1 || condition2 || condition3) { day++; FillDay(day); } txtMain.Select(); txtMain.Select(3, 2); } else if (selectIndex >= 6) { if (year < 9999) { year++; Fillyear(year); } txtMain.Select(); txtMain.Select(6, 4); } } private void btnDown_Click(object sender, EventArgs e) { int selectIndex = txtMain.SelectionStart; int month = 0; int.TryParse(txtMain.Text.Split(‘/‘)[0], out month); int day = 0; int.TryParse(txtMain.Text.Split(‘/‘)[1], out day); int year = 0; int.TryParse(txtMain.Text.Split(‘/‘)[2], out year); if (selectIndex < 3) { if (month > 1) { month--; FillMonth(month); } txtMain.Select(); txtMain.Select(0, 2); } else if (3 <= selectIndex && selectIndex < 6) { if (day > 1) { day--; FillDay(day); } txtMain.Select(); txtMain.Select(3, 2); } else if (selectIndex >= 6) { if (year > 1900) { year--; Fillyear(year); } txtMain.Select(); txtMain.Select(6, 4); } }
八、
private bool Fillyear(int year = 0) { bool editBool = false; if (year == 0) { int.TryParse(txtMain.Text.Split(‘/‘)[2], out year); if (year == 0) { year = DateTime.Now.Year; editBool = true; } } if (year < 1900 && year > 0) { txtMain.Text = txtMain.Text.Split(‘/‘)[0] + "/" + txtMain.Text.Split(‘/‘)[1] + "/" + DateTime.Now.Year; editBool = true; } else { txtMain.Text = txtMain.Text.Split(‘/‘)[0] + "/" + txtMain.Text.Split(‘/‘)[1] + "/" + year; editBool = true; } return editBool; //txtMain.Select(0, 2); } private bool FillMonth(int month = 0) { bool editBool = false; if (month == 0) { int.TryParse(txtMain.Text.Split(‘/‘)[0], out month);//txtMain.Text.Substring(0, 2) if (month == 0) { month = DateTime.Now.Month; editBool = true; } } if (9 >= month && month > 0) { txtMain.Text = "0" + month.ToString() + "/" + txtMain.Text.Split(‘/‘)[1] + "/" + txtMain.Text.Split(‘/‘)[2]; editBool = true; } else { txtMain.Text = month + "/" + txtMain.Text.Split(‘/‘)[1] + "/" + txtMain.Text.Split(‘/‘)[2]; editBool = true; } return editBool; //txtMain.Select(3, 2); } private bool FillDay(int day = 0) { bool editBool = false; if (day == 0) { int.TryParse(txtMain.Text.Split(‘/‘)[1], out day);//txtMain.Text.Substring(0, 2) if (day == 0) { day = DateTime.Now.Day; editBool = true; } } if (9 >= day && day > 0) { txtMain.Text = txtMain.Text.Split(‘/‘)[0] + "/" + "0" + day.ToString() + "/" + txtMain.Text.Split(‘/‘)[2]; editBool = true; } else { txtMain.Text = txtMain.Text.Split(‘/‘)[0] + "/" + day.ToString() + "/" + txtMain.Text.Split(‘/‘)[2]; editBool = true; } return editBool; //txtMain.Select(6, 4); }
九、
/// <summary> /// 根据年月判断日期是否超出范围 是则修改 /// </summary> private void EidtDay(int month = 0, int year = 0) { if (month == 0) { int.TryParse(txtMain.Text.Split(‘/‘)[0], out month); } int day = 0; int.TryParse(txtMain.Text.Split(‘/‘)[1], out day); if (year == 0) { int.TryParse(txtMain.Text.Split(‘/‘)[2], out year); } if (month == 0) { month = DateTime.Now.Month; } if (day == 0) { day = DateTime.Now.Day; } if (year == 0) { year = DateTime.Now.Year; } if ((month == 4 || month == 6 || month == 9 || month == 11) && day > 30) { if (month < 11) { txtMain.Text = "0" + month + "/30/" + year; } else { txtMain.Text = month + "/30/" + year; } }
if (DateTime.IsLeapYear(year) && month == 2 && day > 29) { txtMain.Text = "0" + month + "/29/" + year; } if (!DateTime.IsLeapYear(year) && month == 2 && day > 28) { txtMain.Text = "0" + month + "/28/" + year; } }
时间: 2024-11-09 09:10:15