参数字典包含参数';id';不可为null的类型';System.Int32';
本文关键字:参数 类型 Int32 null System 字典 包含 id | 更新日期: 2023-09-27 17:59:08
当我提交编辑时,我不断收到这个错误。我尝试了一些不同的策略,比如添加int?
或通过url发送id,但我不知道自己做错了什么。
参数字典包含"XXX.Controller.OBProfileTaskFieldsController"中方法"System.Web.Mvc.ActionResult Index(Int32,Int32)"的不可为null类型"System.Int32"的参数"id"的null条目。可选参数必须是引用类型、可为null的类型,或者声明为可选参数。
参数名称:参数
我的控制器看起来像这样:
[HttpPost]
public ActionResult Edit(int id, int tid, OBProfileTaskFields fieldToUpdate)
{
try
{
OBProfileTaskFields originalField = this.dbContext.OBProfileTaskFields.FirstOrDefault(obptf => obptf.ProfileID == fieldToUpdate.ProfileID && obptf.TaskID == fieldToUpdate.TaskID && obptf.FName == fieldToUpdate.FName);
originalField.FRequired = fieldToUpdate.FRequired;
originalField.FLocked = fieldToUpdate.FLocked;
originalField.CCAccess = fieldToUpdate.CCAccess;
originalField.EEAccess = fieldToUpdate.EEAccess;
if (originalField.SeqNbr != fieldToUpdate.SeqNbr) ReorderProfileTaskFields(fieldToUpdate.ProfileID, fieldToUpdate.TaskID, fieldToUpdate.FName, (int)fieldToUpdate.SeqNbr);
originalField.SeqNbr = fieldToUpdate.SeqNbr;
this.dbContext.SaveChanges();
return RedirectToAction("Index", "OBProfileTasks", new { id = originalField.ProfileID});
}
catch
{
return View(this.dbContext.OBProfileTaskFields.FirstOrDefault(obptf => obptf.ProfileID == fieldToUpdate.ProfileID && obptf.TaskID == fieldToUpdate.TaskID && obptf.FName == fieldToUpdate.FName));
}
}
我的观点是这样的:
<!--Modals-->
<div class="modal fade" id="instructions-@item.TaskID" tabindex="-1" role="dialog" aria-labelledby="instructionsLabel">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button>
<h4 class="modal-title" id="instructionsLabel">Instructions</h4>
</div>
@using (Html.BeginForm("Edit", "OBProfileTaskFields", FormMethod.Post))
{
<div class="modal-body">
<input type="hidden" name="id" value="@item.ProfileID"/>
<input type="hidden" name="tid" value="@item.TaskID" />
<p>Placeholder text for isntructions or anything of that sort.</p>
@Html.TextAreaFor(modelItem => item.CCInstruction, new {@class = "form-control", @rows = "6", @style = "width: 80%;"})
<p>Placeholder text for isntructions or anything of that sort.</p>
@Html.TextAreaFor(modelItem => item.EEInstruction, new {@class = "form-control", @rows = "6", @style = "width: 80%;"})
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
<button type="submit" class="btn btn-primary">Save changes</button>
</div>
}
</div>
</div>
</div>
我正在传递我认为需要的两个不同的ID。
此处出现错误:return RedirectToAction("Index", "OBProfileTasks", new { id = originalField.ProfileID});
您只传递1个参数,而错误显示Index需要2(Index(Int32, Int32)
)
这里的方法Index似乎需要2个参数,所以你必须用2个参数重定向,比如`
return RedirectToAction("Index", "OBProfileTasks", new { id = originalField.ProfileID, tid = 2});
在这里,我们选择tid=2