我有一个页面，我想在集合中添加/删除项目，然后使用POST提交数据。我正在使用actionlinks来添加和删除。我可以传递我想要修改的项目的ID和修改类型的字符串，即删除或添加。但我的模型参数始终为空。
@model Models.Claims.ClaimAll
@for (int i = 0; i < Model.Claims.Count; i++)
{
using (Html.BeginForm())
{
int ClaimNum = i + 1;
<div style="border: solid; border-width: thin; padding: 5px;">
<div style="background-color: #c3bebe">
@Html.Label("Claim: " + ClaimNum.ToString())
<hr />
</div>
@Html.HiddenFor(m => m.Claims[i].ClaimID)
@Html.HiddenFor(m => m.Person.PersonID)
@Html.LabelFor(m => m.Claims[i].ClaimRef)
@Html.TextBoxFor(m => m.Claims[i].ClaimRef)
@{List<SelectListItem> list = new List<SelectListItem>{
new SelectListItem {Text="Legal", Value = "Legal" },
new SelectListItem {Text="Immigration", Value = "Immigration"},
new SelectListItem {Text="Housing", Value = "Housing"}
};}
@Html.Label("Claim type:")
@Html.DropDownListFor(m => m.Claims[i].ClaimType, new SelectList(list, "Text", "Value", Model.Claims[i].ClaimType))
<br />
@{
for (int ii = 0; ii < Model.Claims[i].ClaimActions.Count; ii++)
{
int ActionNum = ii + 1;
@Html.Label("Claim action: " + ActionNum.ToString())
<hr />
@Html.HiddenFor(m => m.Claims[i].ClaimActions[ii].ClaimActionID)
@Html.HiddenFor(m => m.Claims[i].ClaimActions[ii].ClaimID)
@Html.HiddenFor(m => m.Claims[i].ClaimActions[ii].ClaimStatusID)
@Html.HiddenFor(m => m.Claims[i].ClaimActions[ii].ClaimStatus)
@Html.Label("Claim status:")
@Html.DropDownListFor(m => m.ClaimActions[i].ClaimStatusID, new SelectList(Model.ClaimStatuses, "ClaimStatusID", "ClaimStatusText", Model.Claims[i].ClaimActions[ii].ClaimStatusID))
@Html.LabelFor(m => m.Claims[i].ClaimActions[ii].Notes)
@Html.TextBoxFor(m => m.Claims[i].ClaimActions[ii].Notes)
@Html.LabelFor(m => m.Claims[i].ClaimActions[ii].StartDate)
@Html.TextBoxFor(m => m.Claims[i].ClaimActions[ii].StartDate, new { @class = "datepicker" })
@Html.LabelFor(m => m.Claims[i].ClaimActions[ii].EndDate)
@Html.TextBoxFor(m => m.Claims[i].ClaimActions[ii].EndDate, new { @class = "datepicker" })
}
<table border="1">
<tr>
<td>
@*<input type="submit" value="Add claim action for this claim" name="btnSubmit" />*@
@Html.ActionLink("Add claim action for this claim", "AddRemoveClaimActions", new {claimID = Model.Claims[i].ClaimID, text = "Add claim action for this claim", model = Model })
</td>
<td>
@*<input type="submit" value="Remove claim action for this claim" name="btnSubmit" />*@
@Html.ActionLink("Remove claim action for this claim", "AddRemoveClaimActions", new {claimID = Model.Claims[i].ClaimID, text = "Remove claim action for this claim", model = Model})
</td>
</tr>
</table>
}
</div>
<br />
}
}
<hr />
<input type="submit" value="Update claims data" name="btnSubmit" />
<hr />
<script type="text/javascript">
$(function () {
$(".datepicker").datepicker({
dateFormat: "dd/mm/yy",
showStatus: true,
showWeeks: true,
currentText: 'Now',
autoSize: true,
gotoCurrent: true,
showAnim: 'drop',
highlightWeek: true,
changeMonth: true,
changeYear: true
});
$("#anim").change(function () {
$(".datepicker").datepicker("option", "showAnim", $(this).val());
});
});
</script>
<script type="text/javascript">
function hideGenericLbl() {
$("#lblGenericMessage").css("color", "red");
$("#lblGenericMessage").fadeOut(5000);
}
</script>
<script type="text/javascript">
$(document).ready(function () {
hideGenericLbl();
@if (Model.strMessage != null)
{
if (Model.isValidModel == false &&
Model.strMessage.Contains("Must be at least one claim status if making a claim.") ||
Model.strMessage.Contains("New claim status available") ||
Model.strMessage.Contains("One claim status removed."))
{
@:$("#modelClaim_ClaimMade").prop('checked', true);
@:$("#modelPerson_HasDependants").prop('checked', true);
}
}
// Claim made logic
$("#modelClaim_ClaimMade").click(function () {
if ($('#modelClaim_ClaimMade').is(':checked')) {
$("#NewClaim").show();
//$("#divClaimStatus").show();
}
else {
$("#NewClaim").hide();
//$("#divClaimStatus").hide();
}
});
if ($('#modelClaim_ClaimMade').is(':checked')) {
$("#NewClaim").show();
//$("#divClaimStatus").show();
}
else {
$("#NewClaim").hide();
//$("#divClaimStatus").hide();
}
});
</script>
这些是我的行动链接
<table border="1">
<tr>
<td>
@*<input type="submit" value="Add claim action for this claim" name="btnSubmit" />*@
@Html.ActionLink("Add claim action for this claim", "AddRemoveClaimActions", new {claimID = Model.Claims[i].ClaimID, text = "Add claim action for this claim", model = Model })
</td>
<td>
@*<input type="submit" value="Remove claim action for this claim" name="btnSubmit" />*@
@Html.ActionLink("Remove claim action for this claim", "AddRemoveClaimActions", new {claimID = Model.Claims[i].ClaimID, text = "Remove claim action for this claim", model = Model})
</td>
</tr>
</table>
控制器方法
public ActionResult AddRemoveClaimActions(string claimID, string text, ClaimAll model)
{
switch (text)
{
case "Add claim action for this claim":
#region AddClaimStatus
//Add new claim to list
model.ClaimActions.Insert(model.ClaimActions.Count, new ClaimAction());
// SET to false as Model is not ready for DB
model.isValidModel = false;
// SET message for the user
model.strMessage = "New claim status available";
break;
#endregion
case "Remove claim action for this claim":
#region RemoveClaimStatus
// Can't remove IF only 1
model.isValidModel = false;
if (model.ClaimActions.Count == 1)
{
model.strMessage = "Must be at least one claim status if making a claim.";
}
else
{
model.ClaimActions.RemoveAt(model.ClaimActions.Count - 1);
model.strMessage = "One claim status removed.";
}
break;
#endregion
}
return View("~/Views/Claim/EditClaims.cshtml", model);
}
我最初使用按钮来执行此操作，但执行POST修改视图模型没有意义。但是现在我无法在控制器中访问我的模型，因为它是null。我检查了参数名称是否正确以及对象类型。