C# 获得两日期之间所有月份(包括跨年)
前台：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
开始<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
结束<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
<br />
<br />
<asp:Button ID="Button1" runat="server" Text="Button" onclick="Button1_Click" />
</div>
</form>
</body>
</html>
后台：
protected void Button1_Click(object sender, EventArgs e)
{
string Begain_time = TextBox1.Text;
string End_time = TextBox2.Text;
string year_b = Begain_time.Substring(, );
string year_e = End_time.Substring(, );
string Begain_month = Begain_time.Substring(, );
string End_month = End_time.Substring(, );
int year_count=Convert.ToInt32(year_e)-Convert.ToInt32(year_b); if (year_count==)
{
int count = Convert.ToInt32(End_month) - Convert.ToInt32(Begain_month);
for (int i = ; i <= count; i++)
{
string month = (Convert.ToInt32(Begain_month) + i).ToString();
if (month.Length == )
{
month = "" + month;
}
DateTime datetime = DateTime.Now;
string[] time = datetime.ToString().Split(new char[] { '/' });
string date = year_b + "-" + month + "-" + time[];
string first = "";
string last = "";
if (Convert.ToInt32(month) == Convert.ToInt32(Begain_month))
{
first = Begain_time;
}
else
{
first = Convert.ToDateTime(date).AddDays( - Convert.ToDateTime(date).Day).ToString();
}
if (Convert.ToInt32(month) == Convert.ToInt32(End_month))
{
last = End_time;
}
else
{
last = Convert.ToDateTime(date).AddDays( - Convert.ToDateTime(date).Day).AddMonths().AddDays(-).ToString();
}
if (first.IndexOf(" ") > )
{
first = first.Remove(first.IndexOf(" "));
}
if (last.IndexOf(" ") > )
{
last = last.Remove(last.IndexOf(" "));
}
Response.Write(first + "至" + last + "");
}
}
else
{
int a = Convert.ToInt32(End_month);
int b = Convert.ToInt32(Begain_month);
int count = Convert.ToInt32(End_month)+ * year_count - Convert.ToInt32(Begain_month) ;
for (int i = ; i <= count; i++)
{
DateTime datetime = DateTime.Now;
string[] time = datetime.ToString().Split(new char[] { '/' });
string month = "";
string date = "";
string year = "";
int month_ = Convert.ToInt32(Begain_month) + i;
int year_add=;
if (month_>)
{
year_add = month_ / ;
}
year = (Convert.ToInt32(year_b) + year_add).ToString();
if (month_%==)
{
month = "";
if (year_add>)
{
year = (Convert.ToInt32(year) - ).ToString();
}
}
else
{
month = (month_ - * year_add).ToString();
}
if (month.Length == )
{
month = "" + month;
}
date = year + "-" + month + "-" + time[]; string first = "";
string last = "";
if (Convert.ToInt32(month) == Convert.ToInt32(Begain_month) && Convert.ToInt32(year) == Convert.ToInt32(year_b))
{
first = Begain_time;
}
else
{
first = Convert.ToDateTime(date).AddDays( - Convert.ToDateTime(date).Day).ToString();
}
if (Convert.ToInt32(month) == Convert.ToInt32(End_month) && Convert.ToInt32(year) == Convert.ToInt32(year_e))
{
last = End_time;
}
else
{
last = Convert.ToDateTime(date).AddDays( - Convert.ToDateTime(date).Day).AddMonths().AddDays(-).ToString();
}
if (first.IndexOf(" ") > )
{
first = first.Remove(first.IndexOf(" "));
}
if (last.IndexOf(" ") > )
{
last = last.Remove(last.IndexOf(" "));
}
Response.Write(first+"-"+last+"\t");
}
}
}
注：输入日期月和日必需是两位，如2015-08-05或2015/08/05
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