填充下拉列表 [英] populating dropdown list

问题描述

我正在从数据库填充DropDown，但现在我想为特定用户预先选择值，例如DropDown显示Departments的名称，User 5在Operations部门工作，所以我输入UserID 5然后它应该在DropDown中显示预选的Department



代码：



控制器：

  var  ShiftNames =（ from  n  in  DataContext.AtdShifts  select   new  {n.ShiftId，n.ShiftName}）。Distinct（）; 
 ViewData [  ShiftId] =  new  SelectList（ShiftNames，  ShiftId，   ShiftName）; 

查看：

< label id =lblShiftclass =editEmp_label> Shift< / label> 
 @Html.DropDownList（ShiftId，选择Shift）

我起诉Linq to sql，MVC 3 C＃

解决方案

通过用户作为参数工作的DepartmentId将自动选择





DepartmentId =此方案的用户5的部门ID（操作部门的ID）

ViewData [ShiftId] =新的SelectList（ShiftNames，ShiftId，ShiftName，DepartmentId ）;

i am populating DropDown from database but now i want pre selected value for specific user, e.g. DropDown shows names of Departments, and User 5 works in Operations departments so i enter as UserID 5 then it should show preselected Department in DropDown

Code:

Controller:

var ShiftNames = (from n in DataContext.AtdShifts select new { n.ShiftId, n.ShiftName }).Distinct();
                ViewData["ShiftId"] = new SelectList(ShiftNames, "ShiftId", "ShiftName");

View:

<label id="lblShift" class="editEmp_label">Shift</label>
  @Html.DropDownList("ShiftId", "Select Shift")

I am suing Linq to sql, MVC 3 C#

解决方案

Pass the DepartmentId in which user works as a parameter will automatically select


DepartmentId= Department Id of user 5 for this scenario (Id of Operation Department)
ViewData["ShiftId"] = new SelectList(ShiftNames, "ShiftId", "ShiftName",DepartmentId);

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