[英]Databound DateTimePicker Time in C#
我有一個帶有2個datetimepicker控件的Windows窗體:一個用於日期,另一個用於時間的datetimepicker控件。 這兩個控件都綁定到數據庫中的同一列,並且控件具有不同的屬性名稱(即dateEdit和timeEdit)和不同的格式(即Long和Time)。
這是我的問題/疑問:
謝謝你的幫助!
觸發編輯表單的代碼:
private void timeDataGridView_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
try
{
if (e.ColumnIndex == 5)
{
EditTime editForm = new EditTime((Guid)timeDataGridView.Rows[e.RowIndex].Cells[e.ColumnIndex].Value);
editForm.StartPosition = FormStartPosition.CenterScreen;
editForm.ShowDialog();
editForm.Close();
}
}
catch (Exception ex)
{
string msg = "Error: ";
msg += ex.Message;
throw new Exception(msg);
}
}
表單代碼:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace StatusManager
{
public partial class EditTime : Form
{
private Guid calendarId;
public EditTime()
{
InitializeComponent();
}
public EditTime(Guid Id)
{
InitializeComponent();
calendarId = Id;
}
public string GetConnectionString()
{
var connString = ConfigurationManager.ConnectionStrings["StatusManager.Properties.Settings.StatusConnectionString"].ConnectionString;
return connString;
}
private void UpdateCalendarItem(string dateEdit, string timeEdit, string note)
{
var conn = new SqlConnection(GetConnectionString());
const string UpdateStatusSql = @"UPDATE dbo.statuses SET
calendarTime = @timeOffset
notes = @note
WHERE PK_calendarUID = @PK_calendarUID";
try
{
SqlCommand cmd = new SqlCommand(UpdateSql, conn);
var param = new SqlParameter[3];
param[0] = new SqlParameter("@PK_calendarUID", calendarId);
//Convert date(s) to correct format
string dateTimeCombined = dateEdit + " " timeEdit;
DateTime timeConverted = Convert.ToDateTime(dateTimeCombined);
DateTimeOffset timeOffset = new DateTimeOffset(timeConverted);
param[1] = new SqlParameter("@timeOffset", timeOffset);
param[2] = new SqlParameter("@note", note);
foreach (SqlParameter t in param)
{
cmd.Parameters.Add(t);
}
conn.Open();
cmd.CommandType = CommandType.Text;
cmd.ExecuteNonQuery();
}
catch (SqlException ex)
{
string msg = "Error updating 'calendarItems': ";
msg += ex.Message;
throw new Exception(msg);
}
finally
{
conn.Close();
}
}
private void editTimeButton_Click(object sender, EventArgs e)
{
UpdateCalendarItem(dateEdit.Text, timeEdit.Text, notes.Text);
this.Close();
}
private void EditTime_Load(object sender, EventArgs e)
{
this.locationsTableAdapter.Fill(this.locationsDataSet.locations);
this.calendarTableAdapter.FillById(this.calendarDataSet.calendarItems, calendarId);
}
}
}
實例化datetimepicker的代碼:
this.timeEdit.CustomFormat = "";
this.timeEdit.DataBindings.Add(new System.Windows.Forms.Binding("Text", this.calendarBindingSource, "calendarTime", true));
this.timeEdit.Format = System.Windows.Forms.DateTimePickerFormat.Time;
this.timeEdit.Location = new System.Drawing.Point(385, 30);
this.timeEdit.Name = "timeEdit";
this.timeEdit.ShowUpDown = true;
this.timeEdit.Size = new System.Drawing.Size(89, 20);
this.timeEdit.TabIndex = 2;
您需要使用DateTimePicker.CustomFormat屬性
s The one- or two-digit seconds.
ss The two-digit seconds. Single digit values are preceded by a 0.
您不能使用DateTimePicker毫秒。
問題已解決,但我不確定如何做到。 這是我所做的:
注意:毫無疑問,由於操作員錯誤,我之前嘗試將datetime轉換為varchar均未成功。
保存表單后,綁定似乎仍然存在,並且我能夠將相關變量傳遞給更新函數
感謝大家的投入! 感謝您的指導和建議!
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