我正在尝试用此选定月份中的日期填充ComboBox

    private void cboSelectMonth_SelectedIndexChanged(object sender, EventArgs e)
    {
       if (cboSelectMonth.SelectedIndex >= 0)
       {
            int year = Convert.ToInt32(cboSelectYear.SelectedValue);
            int month = Convert.ToInt32(cboSelectMonth.SelectedValue);

            this.cboSelectDay.DisplayMember = "Text";
            this.cboSelectDay.ValueMember = "Value";

            int dayCount = DateTime.DaysInMonth(year, month);
            var days = new[ dayCount+1 ] { };

            for (int i = 1; i < dayCount +1; i++)
            {
                days[i] = new { Text = Convert.ToString(i), Value = i };
                //cboSelectDay.Items.Add(i);
                //   days[]  { new { Text = Convert.ToString(i), Value = i } };
            }

            this.cboSelectDay.DataSource = days;

            DateTime now = DateTime.Now;
            int dayValue = now.Day;

            cboSelectDay.SelectedIndex = dayValue - 1; 
       }
    }

因此,我试图以ComboBox结尾,该框列出了当月的所有日期.例如,选择9月将增加30天的组合框,选择10月将给您31等.我遇到两个错误.第一个是在var days = new [dayCount 1] {}上；行,表示保护了“]”.第二个错误是在天[i] = new {Text = Convert.ToString(i),Value = i};行上,提示无法将类型’AnonymousType#1’隐式转换为’int’

我正在尝试做一些与我在月中所做的事情类似的方法,该方法确实有效(下面的代码块).我究竟做错了什么？

    private void FillMonthCombobox()
    {
        this.cboSelectMonth.DisplayMember = "Text";
        this.cboSelectMonth.ValueMember = "Value";

        var months = new[] 
        { 
            new { Text = "January", Value = 1 }, 
            new { Text = "February", Value = 2 }, 
            new { Text = "March", Value = 3 }, 
            new { Text = "April", Value = 4 }, 
            new { Text = "May", Value = 5 }, 
            new { Text = "June", Value = 6 }, 
            new { Text = "July", Value = 7 }, 
            new { Text = "Aughust", Value = 8 }, 
            new { Text = "September", Value = 9 }, 
            new { Text = "October", Value = 10 }, 
            new { Text = "November", Value = 11 }, 
            new { Text = "December", Value = 12 } 
        };
        this.cboSelectMonth.DataSource = months;

        DateTime now = DateTime.Now;
        int monthValue = now.Month;
        cboSelectMonth.SelectedIndex = monthValue - 1;
    }

编辑：我现在可以填充ComboBox,但是如何将Text = day和Value = day添加到循环中,以便以后可以引用Value？在此循环中,它们将是相同的,但在我正在处理的其他一些循环中,它们将是不同的.本质上,我想在第二个代码块中做同样的事情,但要有一个循环.

解决方法:

很简单,但是您也必须指定年份.注意二月和and年！

int year = 2015;
int month = 5;
int[] days = Enumerable.Range(1, DateTime.DaysInMonth(year, month)).ToArray();

之后可以将其指定为数据源：

cboSelectDay.DataSource = days;
cboSelectDay.DataBind();