我在MVC中有一个web网格，自动调用ajax进行分页。 我正在使用Jquery Ajax调用从webgrid中删除一行。
问题是当我通过Ajax删除功能时，大多数时候我得到500内部服务器错误。我不确定导致错误的原因。 注意：如果我在调试模式下，那么我没有遇到任何错误。
以下是我的代码：
Webgrid HTML页面：
<div class="row panel panel-default">
<div class="panel-heading">
<h3 class="panel-title"><b>All Recipients</b></h3>
</div>
<div class="panel-body">
<div id="SearchRecipientGrid">
@MvcHtmlString.Create(
@grid.GetHtml(
htmlAttributes: new
{
id = "Grid",
@class = "table table-bordered table-striped table-condensed"
},
mode: WebGridPagerModes.All,
firstText: "First",
previousText: "Prev",
nextText: "Next",
lastText: "Last",
columns: grid.Columns
(
grid.Column("", "View", format: @<text> <a href="@Url.Action("ViewRecipient", "Recipient", new {id = @item.UniqueKey})" class="btn">
<span class="glyphicon glyphicon-folder-open" aria-hidden="true"></span>
</a> </text>),
grid.Column("", "Update", format: @<text> <a href="@Url.Action("UpdateRecipient", "Recipient", new { id = @item.UniqueKey })" class="btn">
<span class="glyphicon glyphicon-edit" aria-hidden="true"></span>
</a> </text>),
grid.Column("", "Delete", format: @<text> <a href="#"
id="@item.RecipientsID" class="btn deleteRecipient" value="@item.Name">
<span class="glyphicon glyphicon-trash" aria-hidden="true"></span>
</a> </text>),
grid.Column("Name", "Name"),
grid.Column("MedicaidNumber", "Medicaid Number"),
grid.Column("SSN", "SSN"),
grid.Column("CaseNumber", "Case Number"),
grid.Column("County", "County"),
grid.Column("LienStatus", "LienStatus")
)
).ToString().Replace("<tfoot>",
"<tfoot><tr class='footstuff'><td colspan='9' style='color: black;'>Page " + (grid.PageIndex + 1) + " of " + ((grid.TotalRowCount / grid.RowsPerPage) + 1) + "</td>"))
</div>
</div>
</div>
jQuery Ajax调用：
注意：如果我不使用＆＃39;文件＆＃39;对于点击事件，我无法删除分页上的功能
//It is used to delete a property from web grid
$(document).on('click', '.deleteRecipient', function () {
var id = $(this).attr('id');
var name = $.trim($(this).attr('value'));
var paramObj = { id :id, name :name }
window.baseShowModalOkCancelWithFunction("Delete Recipient"
, "<p>Are you sure to delete Recipient " + name + "</p>"
, deleteRecipient
, ""
, paramObj
, ""
, "INFORMATIONAL");
});
function deleteRecipient(paramObj) {
var data = { "id": paramObj.id };
var url = "@Url.Action("DeleteRecipient", "Recipient")?id=" + data.id;
console.log(url);
$.ajax({
url: url,
type: 'POST',
dataType: "json",
contentType: 'application/json; charset=utf-8',
success: function (result) {
if (result === true) { // Successfully Deleted
window.baseCustomAutoClose("Recipient " + name + " was successfully deleted from the database.");
$("#" + id).closest("tr").remove();
}
},
error: function () {
window.baseShowModalOkCancel("<p>Recipient NOT deleted</p", "<p>Recipient Name: " + paramObj.name + " encountered a database error</p>", "ERROR");
}
});
}
控制器代码：
public ActionResult SearchRecipient(RecipientSearchModel model)
{
using (var db = new LiensTrackerEntities())
{
List<SearchRecipientView> modelRec = new List<SearchRecipientView>();
RecipientSearchModel viewData = new RecipientSearchModel()
{
AllDropDowns = LiensHelper.GetAllDropDown(),
RecipientsList = modelRec
};
if (!string.IsNullOrEmpty(model.SearchTypeText))
{
if (model.SearchType == "1")
{
viewData.RecipientsList = db.SearchRecipientViews.Where(x => x.Name.ToLower().Contains(model.SearchTypeText)).ToList();
}
else if (model.SearchType == "2")
{
viewData.RecipientsList = db.SearchRecipientViews.Where(x => x.MedicaidNumber == model.SearchTypeText).ToList();
}
else if (model.SearchType == "3")
{
viewData.RecipientsList = db.SearchRecipientViews.Where(x => x.SSN == model.SearchTypeText).ToList();
}
else if (model.SearchType == "4")
{
viewData.RecipientsList = db.SearchRecipientViews.Where(x => x.County == model.SearchTypeText).ToList();
}
else if (model.SearchType == "5")
{
viewData.RecipientsList = db.SearchRecipientViews.Where(x => x.MedicaidNumber == model.SearchTypeText).ToList();
}
}
else if (model.SearchType == null)
{
viewData.RecipientsList = db.SearchRecipientViews.ToList();
}
return View(viewData);
}
}
[HttpPost]
public ActionResult DeleteRecipient(int id)
{
using (var db = new LiensTrackerEntities())
{
using (var transaction = db.Database.BeginTransaction())
{
Recipient recipient = db.Recipients.FirstOrDefault(x => x.RecipientsID == id);
if (recipient != null)
{
recipient.DeleteFlag = true;
db.SaveChanges();
transaction.Commit();
return Json(true, JsonRequestBehavior.AllowGet);
}
return View("Error");
}
}
}