将值传递给另一个动作结果答案

【问题标题】：Passing value to another action result将值传递给另一个动作结果
【发布时间】：2014-03-05 07:48:48
【问题描述】：

我在此操作中收到 Emplid，（从包含提交 btn 和下拉的 DDL 操作调用）

public ActionResult showDDL(int? EmplID = null) 
        {
            ViewBag.EmplID = EmplID;
            if (EmplID == null) 
            {
                IEnumerable<GetAtdRecord_SpResult> EmployeeAtd_2 = DataContext.GetAtdRecord_Sp(0).ToList();
                return View(EmployeeAtd_2);
            }
            else if (EmplID != null) 
            {
                IEnumerable<GetAtdRecord_SpResult> EmployeeAtd_2 = DataContext.GetAtdRecord_Sp(EmplID).ToList();
                return View(EmployeeAtd_2);
            }

            return View();
        }

查看：

@{

     var grid = new WebGrid(ViewData.Model, defaultSort: "EmplID", rowsPerPage: 20);

  }

@if (Model.Count > 0)
{
  <div id="AllEmpGrid_ByName">
   @grid.GetHtml(columns: grid.Columns(
                                        grid.Column("EmplID", "Employee ID"),
                                        grid.Column("EmplName", "Employee Name"),
                                        grid.Column("ShiftID", "Shift ID"),
                                        grid.Column("DateVisited", "Date of Visit"),
                                        grid.Column("InTime", "In Time"),
                                        grid.Column("TimeOut", "Time Out"),
                                        grid.Column("OverTime", "Over Time"),
                                        grid.Column("TotalWorkingTime", "Total Working Time")
                                      ))
 </div>

 using (Html.BeginForm("ToExcel", "Home", FormMethod.Get))
 {
   <button type="submit" class="button_form button_download" >Download in Excel</button>
 }

}
else
{
    <h2 class="error" >No Data Found</h2> 
}

在同一个视图中，您可以看到 EXCEL 中的“下载”按钮，我想将此 emplID 传递给 ToExcel 方法

public ActionResult ToExcel(int? empid )
        {
            var DataContext = new EmployeeRecordDataContext();

            var grid = new GridView();
            grid.DataSource = DataContext.GetAtdRecord_Sp(null).ToList();
            grid.DataBind();

            Response.ClearContent();
            Response.Buffer = true;
            Response.AddHeader("content-disposition", "attachment; filename=AttendanceSheet.xls");
            Response.ContentType = "application/ms-excel";

            Response.Charset = "";
            StringWriter sw = new StringWriter();
            System.Web.UI.HtmlTextWriter htw = new System.Web.UI.HtmlTextWriter(sw);

            grid.RenderControl(htw);

            Response.Output.Write(sw.ToString());
            Response.Flush();
            Response.End();
            return RedirectToAction("index");
        }

当我单击“在 Excel 中下载”按钮时，我无法弄清楚如何将操作“showDDL”中收到的 EmplID 传递给 EmpID？

【问题讨论】：

标签： asp.net asp.net-mvc asp.net-mvc-3 c#-4.0 razor

【解决方案1】：

您可以使用 ViewBag 执行此操作。首先将值存储在 ViewBag 中。

public ActionResult showDDL(int? EmplID = null) 
{
   ViewBag.Id = EmplId;
   // You other logic....
}

然后像这样在你的表单上使用它 -

 using (Html.BeginForm("ToExcel", "Home", new { empid = ViewBag.Id }, FormMethod.Get))
 {
   <button type="submit" class="button_form button_download" >Download in Excel</button>
 }

还有一台服务器，您可以在参数中获取值 -

public ActionResult ToExcel(int? empid)
{
    // You logic and use empid here...
}

【讨论】：