【发布时间】：2010-10-17 15:39:47
【问题描述】：
我正在尝试创建一个页面，允许我从数据库中删除求职者。 我的页面工作正常，但是当我单击删除按钮时，它会重新加载页面，但不会删除申请人及其详细信息。我正在使用 linq。
这是我的代码
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="ApplicantManagement.aspx.cs" Inherits="AdminPanel_ApplicantManagement" MasterPageFile="../AdminMaster.master" Title="ApplicantManagement" EnableEventValidation="false" %>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPagePlaceHolder1" Runat="Server">
<div class="content">
<div class="titleMain">Library -> Applicant Management
</div>
<h1><span></span>Applicant Management</h1>
<div class="contentpage" >
<p>On this page you add, update, delete the Job applicants.
<b><asp:Label ID="ApplicantError" runat="server" Visible="false" /></b>
<asp:Label ID="ApplicantMsg" runat="server" Visible="false" />
<br />
<table>
<tr>
<td>
<asp:DropDownList ID="JobList" runat="server">
</asp:DropDownList>
</td>
<td>
<asp:Button ID="select" runat="server" Text="Select" onclick="btn_Select_Click"/>
</td>
</tr>
</table>
<asp:ListView ID="lv_Applicant" runat="server" DataKeyNames="applicant_id"
EnableViewState="false" OnItemDeleting="lv_Applicant_ItemDeleting">
<LayoutTemplate>
<table width="550" class="table">
<asp:PlaceHolder ID="itemPlaceholder" runat="server" />
</table>
<asp:DataPager ID="ApplicantPager" runat="server" PageSize="5">
<Fields>
<asp:NextPreviousPagerField ShowFirstPageButton="false" ShowPreviousPageButton="true" ShowNextPageButton="false" />
<asp:NumericPagerField />
<asp:NextPreviousPagerField ShowFirstPageButton="false" ShowPreviousPageButton="false" ShowNextPageButton="true" ShowLastPageButton="false" />
</Fields>
</asp:DataPager>
</LayoutTemplate>
<ItemTemplate>
<tr>
<td></td>
<td><asp:Label ID="ApplicantID" runat="server" Text='<%# Eval("applicant_id") %>' Visible="false" />
</td>
</tr>
<tr>
<td>
<b>Name</b>
</td>
<td>
<asp:Label ID="ApplicantName" runat="server" Text='<%# Eval("applicant_name") %>'/>
</td>
</tr>
<tr>
<td>
<b>Address</b>
</td>
<td>
<asp:Label ID="ApplicantAddress" runat="server" Text='<%# Eval("applicant_address") %>'/>
</td>
</tr>
<tr>
<td>
<b>Phone</b>
</td>
<td>
<asp:Label ID="ApplicantPone" runat="server" Text='<%# Eval("applicant_phone") %>'/>
</td>
</tr>
<tr>
<td>
<b>Email</b>
</td>
<td>
<asp:Label ID="ApplicantEmail" runat="server" Text='<%# Eval("applicant_email") %>'/>
</td>
</tr>
<tr>
<td>
<b>Education</b>
</td>
<td>
<asp:Label ID="ApplicantEducation" runat="server" Text='<%# Eval("applicant_education") %>'/>
</td>
</tr>
<tr>
<td>
<b>Experience</b>
</td>
<td>
<asp:Label ID="ApplicantExperience" runat="server" Text='<%# Eval("applicant_experience") %>'/>
</td>
</tr>
<tr>
<td>
<b>Interests</b>
</td>
<td>
<asp:Label ID="ApplicantInterests" runat="server" Text='<%# Eval("applicant_interest") %>'/>
</td>
</tr>
<tr>
<td>
<b>Other</b>
</td>
<td>
<asp:Label ID="ApplicantOther" runat="server" Text='<%# Eval("applicant_other") %>'/>
</td>
</tr>
<tr>
<td></td>
<td>
<asp:Button ID="ApplicantButton2" runat="server" CommandName="Delete"
Text="Delete" Width="50" /><br /><br />
</td>
</tr>
</ItemTemplate>
</asp:ListView>
</p></div>
</div>
</asp:Content>
以及背后的代码：
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
public partial class AdminPanel_ApplicantManagement : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
getApplicantListDDL();
}
}
#region Getting the List
protected void getApplicantListDDL()
{
using (CareersDataContext applist = new CareersDataContext())
{
var appList = from a in applist.team5_jobs
select new
{
a.job_id,
a.job_name
};
JobList.DataSource = appList;
JobList.DataTextField = "job_name";
JobList.DataValueField = "job_id";
JobList.DataBind();
JobList.Items[0].Selected = true;
}
}
#endregion
protected void lv_Applicant_ItemDeleting(object sender, ListViewDeleteEventArgs e)
{
int ID = Int32.Parse(lv_Applicant.DataKeys[e.ItemIndex].Value.ToString());
using (CareersDataContext applist = new CareersDataContext())
{
team5_job_applicant applicants = applist.team5_job_applicants.Single(al => al.applicant_id == ID);
applist.team5_job_applicants.DeleteOnSubmit(applicants);
applist.SubmitChanges();
}
getApplicantList();
}
protected void getApplicantList()
{
string jobName = JobList.SelectedItem.ToString();
using (CareersDataContext applist = new CareersDataContext())
{
var applicantListVar = from apl in applist.team5_job_applicants
where (apl.job_name == jobName)
select new
{
job_name = apl.job_name,
applicant_id = apl.applicant_id,
applicant_name = apl.applicant_name,
applicant_address = apl.applicant_address,
applicant_phone = apl.applicant_phone,
applicant_email = apl.applicant_email,
applicant_education = apl.applicant_education,
applicant_experience = apl.applicant_experience,
applicant_interest = apl.applicant_interest,
applicant_other = apl.applicant_other
};
lv_Applicant.DataSource = applicantListVar;
lv_Applicant.DataBind();
}
}
protected void btn_Select_Click(object sender, EventArgs e)
{
getApplicantList();
}
}
谢谢...
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