我有一个链接到数据源的 asp 日历，它获取日期在数据表中重复的次数，并将其显示在日历上。但是如果同月有 2 个日期在 mysql 表上，那么标签会出现两次，如果有 3 个日期，则标签会出现三次，依此类推，如下图所示。
代码如下所示
protected void Page_Load(Object sender, EventArgs e)
{
if (!IsPostBack)
{
cal2.VisibleDate = DateTime.Today;
FillLeaveplannerDataset();
}
}
protected void FillLeaveplannerDataset()
{
cal2.VisibleDate = cal2.TodaysDate;
DateTime firstDate = new DateTime(cal2.VisibleDate.Year, cal2.VisibleDate.Month, 1).AddDays(-6);
DateTime lastDate = new DateTime(cal2.VisibleDate.Date.AddMonths(1).Year, cal2.VisibleDate.Date.AddMonths(1).Month, 1).AddDays(7);
dsleaveplanner = GetCurrentMonthData(firstDate, lastDate);
}
protected DateTime GetFirstDayOfNextMonth()
{
int monthNumber, yearNumber;
if (cal2.VisibleDate.Month == 12)
{
monthNumber = 1;
yearNumber = cal2.VisibleDate.Year + 1;
}
else
{
monthNumber = cal2.VisibleDate.Month + 1;
yearNumber = cal2.VisibleDate.Year;
}
DateTime lastDate = new DateTime(yearNumber, monthNumber, 1);
return lastDate;
}
protected DataSet GetCurrentMonthData(DateTime firstDate, DateTime lastDate)
{
DataSet dsMonth = new DataSet();
MySqlConnection con = new MySqlConnection("Server=localhost;Database=mydb;Uid=myid;Pwd=abc123;");
string caldate = "Select date From approved Where date >= @firstDate And date <= @lastDate Group By date";
MySqlCommand cmd = new MySqlCommand(caldate, con);
cmd.Parameters.AddWithValue("@firstDate", firstDate);
cmd.Parameters.AddWithValue("@lastDate", lastDate);
MySqlDataAdapter mysqlDataAdapter = new MySqlDataAdapter(cmd);
try
{
mysqlDataAdapter.Fill(dsMonth);
}
catch { }
return dsMonth;
}
protected void Calendar1_DayRender(object sender, DayRenderEventArgs e)
{
DateTime nextDate;
if (dsleaveplanner != null)
{
foreach (DataRow dr in dsleaveplanner.Tables[0].Rows)
{
nextDate = (DateTime)dr["date"];
MySqlConnection conn = new MySqlConnection("Server=localhost;Database=mydb;Uid=myid;Pwd=abc123;");
string cntdate = "SELECT COUNT(date) FROM approved WHERE date = @date";
string cntdate2 = "SELECT COUNT(date) FROM pending WHERE date = @date";
MySqlCommand cmd2 = new MySqlCommand(cntdate, conn);
MySqlCommand cmd3 = new MySqlCommand(cntdate2, conn);
cmd2.Parameters.AddWithValue("@date", nextDate);
cmd3.Parameters.AddWithValue("@date", nextDate);
conn.Open();
string count = cmd2.ExecuteScalar().ToString();
string count2 = cmd3.ExecuteScalar().ToString();
var slot2 = Convert.ToInt32(count);
Int32 slot3 = 10 - slot2;
string slot4 = slot3.ToString();
conn.Close();
if (nextDate == e.Day.Date)
{
e.Cell.BackColor = System.Drawing.Color.Orange;
Environment.NewLine.ToString();
e.Cell.ForeColor = System.Drawing.Color.Red;
e.Cell.Font.Size = 9;
e.Cell.Controls.Add(new LiteralControl("<p></p>Slot available:"));
e.Cell.Controls.Add(new LiteralControl(slot4));
e.Cell.Controls.Add(new LiteralControl("<p></p>Pending:"));
e.Cell.Controls.Add(new LiteralControl(count2));
}
else
{
e.Cell.Font.Size = 9;
e.Cell.Controls.Add(new LiteralControl("<p>Slot available: 10</p>"));
e.Cell.Controls.Add(new LiteralControl("<p></p>Pending: 0"));
}
}
}
}
protected void Calendar1_VisibleMonthChanged(object sender,
MonthChangedEventArgs e)
{
DateTime firstDate = e.NewDate.AddDays(-7);
DateTime lastDate = e.NewDate.AddMonths(1).AddDays(7);
dsleaveplanner = GetCurrentMonthData(firstDate, lastDate);
}
我想要的是，如果某个日期没有数据，我希望显示默认值 Slot avalable: 10 和 Pending: 0。我希望每个日期只显示一次可用和待处理的插槽。我在这里错过了什么？ 提前致谢
最佳答案
首先用你的名字创建一个示例类
class Sample
{
public DateTime Date { get; set; }
public int SlotAvailable { get; set; }
public int Pending { get; set; }
}
并创建一个 List<Sample>
List<Sample> samples = new List<Sample>();
然后改变你的foreach喜欢
foreach (DataRow dr in dsleaveplanner.Tables[0].Rows)
{
nextDate = (DateTime)dr["date"];
MySqlConnection conn = new MySqlConnection("Server=localhost;Database=mydb;Uid=myid;Pwd=abc123;");
string cntdate = "SELECT COUNT(date) FROM approved WHERE date = @date";
string cntdate2 = "SELECT COUNT(date) FROM pending WHERE date = @date";
MySqlCommand cmd2 = new MySqlCommand(cntdate, conn);
MySqlCommand cmd3 = new MySqlCommand(cntdate2, conn);
cmd2.Parameters.AddWithValue("@date", nextDate);
cmd3.Parameters.AddWithValue("@date", nextDate);
conn.Open();
string count = cmd2.ExecuteScalar().ToString();
string count2 = cmd3.ExecuteScalar().ToString();
var slot2 = Convert.ToInt32(count);
Int32 slot3 = 10 - slot2;
string slot4 = slot3.ToString();
conn.Close();
samples.Add(new Sample { Date = nextDate, SlotAvailable = slot4, Pending = count2 });
}
然后简单地检查是否 e.Day.Date出现在我们的约会中 List<Sample>像这样的约会
if (samples.Any(x => x.Date == e.Day.Date))
{
e.Cell.BackColor = System.Drawing.Color.Orange;
Environment.NewLine.ToString();
e.Cell.ForeColor = System.Drawing.Color.Red;
e.Cell.Font.Size = 9;
e.Cell.Controls.Add(new LiteralControl("<p></p>Slot available:"));
e.Cell.Controls.Add(new LiteralControl(samples.Where(x => x.Date == e.Day.Date).FirstOrDefault().SlotAvailable.ToString()));
e.Cell.Controls.Add(new LiteralControl("<p></p>Pending:"));
e.Cell.Controls.Add(new LiteralControl(samples.Where(x => x.Date == e.Day.Date).FirstOrDefault().Pending.ToString()));
}
else
{
e.Cell.Font.Size = 9;
e.Cell.Controls.Add(new LiteralControl("<p>Slot available: 10</p>"));
e.Cell.Controls.Add(new LiteralControl("<p></p>Pending: 0"));
}
输出:
关于c# - 带有数据源的 Asp 日历重复标签，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/51835055/