我在数据库中有3个表
students_login， interview_events， interested_students，
student_login具有唯一性： - student_id，
interview_events具有唯一性： - id，
interest_students具有唯一性： - id，student_id，interview_id。
所以在接受采访.aspx页面上午显示采访。就像这个mdl-card。它有一个按钮（yes am going）。所以点击这个按钮我想通过存储student_id和interview_id来更新interested_student表。点击按钮后应该隐藏，一条消息显示为“成功”。
如果学生再次访问interview.aspx页面，那么卡片上的按钮就不会显示。
我尝试了很多东西但没有开始工作
我的aspx.cs页面
<asp:Repeater ID="Repeater1" runat="server">
<ItemTemplate>
<asp:Label ID="lbl_company_name" runat="server" Text='<%# Eval("company_name") %>'></asp:Label>
<asp:Label ID="lbl_description" runat="server" Text='<%# Eval("description") %>'></asp:Label></b>
<asp:Label ID="lbl_event_date" runat="server" Text='<%# "Date :"+Convert.ToDateTime(Eval("event_date")).ToString("dd/MMM/yyyy") %>'></asp:Label>
<asp:Label ID="lbl_min_Ty" runat="server" Text=<%#"Minimum Aggregate of All Sems :"+ Eval("min_ty_per")+" %" %>></asp:Label>
<asp:Label ID="lbl_min_hsc" runat="server" Text=<%#"Minimum Hsc Percentage : "+ Eval("min_hsc_per")+" %" %>></asp:Label>
<asp:Label ID="lbl_min_ssc" runat="server" Text=<%#"Minumum SSC Percentage : "+ Eval("min_ssc_per")+" %" %>></asp:Label>
<asp:Label ID="lbl_backlogs" runat="server" Text='<%#"Allowed Live Backlogs : "+ Eval("backlogs") %>'></asp:Label>
<asp:HiddenField ID="hf_event_id" runat="server" Value=<%# Eval("id") %>></asp:HiddenField>
<asp:HiddenField ID="hf_intreseted" runat="server" Value=<%# Eval("intrested") %>></asp:HiddenField>
<asp:Label ID="lbl_already_intrested" runat="server" Text="You are Going To This Interview"></asp:Label>
<asp:Button Text="Yes am Going" runat='server' ID="btn_intrested" OnClick="btn_Intrested_Click"></asp:Button>
<asp:Label ID="lbl_status" runat="server" Text=""></asp:Label>
<asp:Label ID="Label1" runat="server" Text=<%#Eval("intrested") %>></asp:Label>
</ItemTemplate>
</asp:Repeater>
.cs页面：
public partial class InterviewDetails : System.Web.UI.Page
{
//List<int> intrested_event = new List<int>();
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
if (Session["student_username"] != null)
{
fetchInterviews();
}
else {
Response.Redirect("studentLogin.aspx");
}
}
}
private void fetchInterviews()
{
//fetch both the tables interviews as well as interested
DataSet ds = DataAccessLayer.fetchInterviewsEvents(Session["student_username"].ToString());
DataTable dt_interview = ds.Tables[0];//interview table
dt_interview.Columns.Add("intrested",typeof(bool));//added a column
DataTable dt_intrested = ds.Tables[1];//interested table
//this code is to insert true or false in the column we have created above
if (dt_intrested.Rows.Count > 0)//check if the student have not interested in any interview or coming for first time
{
foreach (DataRow dr_intrested in dt_intrested.Rows)
{
//interested_event.Add(Convert.ToInt32(dr_intrested.ItemArray[1]));
foreach (DataRow dr_interview in dt_interview.Rows)
{
//check if the interested table has the interiew_id
if (Convert.ToInt32(dr_intrested["interview_id"]) == Convert.ToInt32(dr_interview["id"]))
{
dr_interview["intrested"] = true;//student is intereseted
}
else
{
dr_interview["intrested"] = false;//student is not interested
}
}
}
}
else {
foreach (DataRow dr_interview in dt_interview.Rows)
{
dr_interview["intrested"] = false;//make all value false if he is coming first time or not interested in avy interview
}
}
Repeater1.DataSource = ds.Tables[0];
Repeater1.DataBind();
}
protected void btn_Intrested_Click(object sender, EventArgs e)
{
var button = (Button)sender;
var item = (RepeaterItem)button.NamingContainer;
HiddenField hf_event_id = (HiddenField)item.FindControl("hf_event_id");
int event_id = Convert.ToInt32(hf_event_id.Value);
Label lbl_company_name = (Label)item.FindControl("lbl_company_name");
Label lbl_description = (Label)item.FindControl("lbl_description");
Label lbl_event_date = (Label)item.FindControl("lbl_event_date");
Label lbl_min_Ty = (Label)item.FindControl("lbl_min_Ty");
Label lbl_min_hsc = (Label)item.FindControl("lbl_min_hsc");
Label lbl_min_ssc = (Label)item.FindControl("lbl_min_ssc");
Label lbl_backlogs = (Label)item.FindControl("lbl_backlogs");
Label lbl_status = (Label)item.FindControl("lbl_status");
string error;
//Label2.Text = event_id.ToString() +" "+ lbl_company_name.Text + " " + lbl_description.Text + " " + lbl_event_date.Text + " " + lbl_min_Ty.Text + " " + lbl_min_hsc.Text + " " + lbl_min_ssc.Text + " " + lbl_backlogs.Text;
//submitting data to database
if (DataAccessLayer.addStudentToIntrested(Session["student_username"].ToString(), event_id, out error))
{
if (error == null)
{
button.Visible = false;
lbl_status.Text = "You are Going To This Interview";
}
else
{
lbl_status.Text = error;
}
}
else
{
lbl_status.Text = "Some Error Occured";
}
}
protected void Repeater1_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
if (e.Item.ItemType == ListItemType.Item)
{
Button btn_intrested = (Button)e.Item.FindControl("btn_intrested");
Label lbl_already_intrested = (Label)e.Item.FindControl("lbl_already_intrested");
//HiddenField hf_event_id = (HiddenField)e.Item.FindControl("hf_event_id");
HiddenField hf_intrested = (HiddenField)e.Item.FindControl("hf_event_id");
//int event_id = Convert.ToInt32(hf_event_id.Value);
bool intrested = Convert.ToBoolean(hf_intrested.Value);
if (intrested == true)
{
btn_intrested.Visible = false;
lbl_already_intrested.Visible = true;
}
else
{
btn_intrested.Visible = true;
lbl_already_intrested.Visible = false;
}
}
}
}