我想通过下拉列表选择值并传递给SQL查询,但我不知道如何才能进行下一步。如何将Dropdownlist值传递给SQL查询?
查看:
@{
List<SelectListItem> List = new List<SelectListItem>();
minList.Add(new SelectListItem {
Text=DateTime.Now.AddMinutes(-1).ToString(),
Value="1"
});
minList.Add(new SelectListItem
{
Text = DateTime.Now.AddMinutes(-2).ToString(),
Value = "2"
});
minList.Add(new SelectListItem
{
Text = DateTime.Now.AddMinutes(-3).ToString(),
Value = "3"
});}@Html.DropDownList("Min",List, "Select")
SQL语句(C#):
string sqlStr = "Select * From Data WHERE Time BETWEEN @A AND @B";
SqlCommand cmd = new SqlCommand(sqlStr, conn);
DateTime now = DateTime.Now;
SelectListItem min = new SelectListItem();
cmd.Parameters.Add(new SqlParameter("@A", min.Value));
cmd.Parameters.Add(new SqlParameter("@B", now));
您需要将表单中选定选项的值发布到调用查询的控制器方法。 –