如何在asp.net中避免将来的时间选择？ [英] how to avoid future time selection in asp.net?

问题描述

大家好，

Hi to all,

protected void bindtimedropdown()
      {
          string ktr, mtr;
          for (int k = 0; k < 24; k++)
          {
              for (int m = 0; m < 60; m=m+30)
              {
                  if (k < 10)
                  {
                      ktr = "0" + k.ToString();
                  }
                  else
                  {
                      ktr = k.ToString();
                  }
                  if (m < 10)
                  {
                      mtr = "0" + m.ToString();
                  }
                  else
                  {
                      mtr = m.ToString();
                  }
                  DropDownList1.Items.Add(new ListItem(ktr + ":" + mtr));
              }
          }
      }

这是我正在使用的代码绑定下拉列表以选择时间。现在我希望用户无法选择今天日期的未来时间。怎么可能？任何人都可以解释一下吗??



谢谢，提前

This is the code which I am using to bind the dropdown to select the time. Now I want user can not select the future time for the today date. How it is possible? Can any one explain me??

Thanks, in advance

推荐答案

试试这段代码

try this code

protected void bindtimedropdown()
    {
        string ktr, mtr;
        for (int k = 0; k < DateTime.Now.Hour; k++)
        {
            for (int m = 0; m < DateTime.Now.Minute; m = m + 30)
            {
                if (k < 10)
                {
                    ktr = "0" + k.ToString();
                }
                else
                {
                    ktr = k.ToString();
                }
                if (m < 10)
                {
                    mtr = "0" + m.ToString();
                }
                else
                {
                    mtr = m.ToString();
                }
                DropDownList1.Items.Add(new ListItem(ktr + ":" + mtr));
            }
        }
    }

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