asp.net中的下拉菜单控件

Question

In my webpage I have two dropdown controls for namely ddlmonth and ddldays ( for month & days) I write a method for current month in ddlmonth and current day in ddldays and i call that method in page load event it working fien but when i select (in ddlmonth ) different month and different day and insert into database the values inserted in database is current month and current day, actually i select different month and day

This is my code

This is the method for current date display in ddlmonth dropdwon control and ddlday

public void getMonth()
{
    ddlmonth.SelectedIndex = DateTime.Now.Month -1;
    ddldate.SelectedIndex = DateTime.Now.Day - 1;
}

I call this in page load

protected void Page_Load(object sender, EventArgs e)
{
    getMonth();
}

If I call the getMonth method in postback

protected void Page_Load(object sender, EventArgs e)
{
    if(!ispostback)
    {
        getMonth();
    }
}

it not displaying the current month and date

without postback it is working

When I select different month and day and insert into database it is taking current month and day

Please help me

Answer 1

您可以尝试使用Request.Form [“ ddlmonth”]和Request.Form [“ ddlday”]来检索值。

Answer 2

Sorry if I misunderstood, but to "call the getMonth method in postback", you need check for ispostback = true, not false.

protected void Page_Load(object sender, EventArgs e)
{
    if(isPostback)
    {
        getMonth();
    }
}

Answer 3

I think u should use

protected void Page_Load(object sender, EventArgs e)
{
    if(!ispostback)
    {
        getMonth();
    }
}

The page is loaded and dropdowns showing Current date and month. After that you choose different date and month and click some button to save that in database. In the button event you write the insertion code and if required then there again call getMonth() method to load again the current date and month in the dropdowns. The date u chose in the dropdowns will be saved in DB. If required you call getMonth() method to load current date again as below.

  protected void btnSave_Click(object sender, EventArgs e)
        {
             //-------- insertion code ----------------//
              getMonth();
        }