Entity Framework error whilepopulate the TextBox in the form

Question

I got the error while populating dropdownlist in Entity Framework.

private void PopulateFormFieds(int userID)
{
UserManager userMgr = new UserManager();
var result = userMgr.GetUserDetail(userID);
if (result.Count > 0)
{
var user = result.First();
tbFirstName.Text = user.FirstName;
tbLastName.Text = user.LastName;
tbContactNumber.Text = user.ContactNumber;
}
else
{
//NO RECORDS FOUND.
tbFirstName.Text = string.Empty;
tbLastName.Text = string.Empty;
tbContactNumber.Text = string.Empty;
}
}
protected void ddlUser_SelectedIndexChanged(object sender, EventArgs e)
{
PopulateFormFieds(Convert.ToInt32(ddlUser.SelectedItem.Value));
}

Operator '>' cannot be applied to operands of type 'method group' and 'int' in

if (result.Count > 0)

Help me to resolve the problem.Thank You.

Mohsin Arif · Answer

Priyanka Singh hey there shouldn't show the error idont know why it is. i checked your in my VS but i haven't got the error . anyway try this if (result.Count() > 0) beacuase the error means it is method and you use as a property.

Akash Ghadage · Answer

Hi Priyanka, When you are using lazy loading at that time every time you need to first load complete object. if result datatype is IsEnumarator or IQueryable you need to use result .Count() ; if result datatype is List then you can use result.Count; you must try this.. if (result.Count() > 0)

Mohsin Arif · Answer

welcome my pleasure..

Mohsin Arif · Answer

asp:DropDownList ID = "ddlUser" runat = "server" AppendDataBoundItems = "true" AutoPostBack = "true" onselectedindexchanged = "ddlUser_SelectedIndexChanged" > try this add AutoPostBack="true" property then tell me if not work

Mohsin Arif · Answer

ok. i checked this in VS 2013. well good its done.

Priyanka Singh · Answer

Mohsin Arif Thank you so much now it worked.

Priyanka Singh · Answer

Mohsin Arif Please Check I made the correction earlier I upload some other file.

Mohsin Arif · Answer

"" Language= "C#" MasterPageFile= "~/Site.Master" AutoEventWireup= "true" CodeBehind= "Entity_Model.aspx.cs" Inherits= "GRIDOPERATION.Model.Entity_Model" %> "Content1" ContentPlaceHolderID= "HeadContent" runat= "server" > "Content2" ContentPlaceHolderID= "MainContent" runat= "server" > Add New Customer ID "tbCustomerId" runat= "server" /> Company Name "tbCompanyName" runat= "server" /> Contact Name "tbContactName" runat= "server" /> Contact Title "tbContactTitle" runat= "server" /> Address "tbAddress" runat= "server" /> City "tbCity" runat= "server" /> "lblMessage" runat= "server" /> "btnAdd" runat= "server" Text= "Add" onclick= "btnAdd_Click" /> there is no any ddluser so where it displayed and how???

Mohsin Arif · Answer

hey where is ddluser in html side. so how can it fire...

Priyanka Singh · Answer

%@ Page Language = "C#" AutoEventWireup = "true" CodeBehind = "Entity_Extract_Data.aspx.cs" Inherits = "GRIDOPERATION.Model.Entity_Extract_Data" % > > html xmlns = "http://www.w3.org/1999/xhtml" > head runat = "server" > title > title > head > body > form id = "form1" runat = "server" > div > asp:DropDownList ID = "ddlUser" runat = "server" AppendDataBoundItems = "true" onselectedindexchanged = "ddlUser_SelectedIndexChanged" > asp:ListItem Selected = "True" Text = " Select a Company Name" Value = "0" > asp:ListItem > asp:DropDownList > br /> Company Name: br /> asp:TextBox ID = "tbCompanyName" runat = "server" /> br /> Contact Name: br /> asp:TextBox ID = "tbContactName" runat = "server" /> br /> Contact Title: br /> asp:TextBox ID = "tbContactTitle" runat = "server" /> br /> Address: br /> asp:TextBox ID = "tbAddress" runat = "server" /> br /> City: br /> asp:TextBox ID = "tbCity" runat = "server" /> div > form > body > html > I have applied the breakpoint in protected void ddlUser_SelectedIndexChanged( object sender, EventArgs e) { PopulateFormFields(Convert.ToInt32(ddlUser.SelectedItem.Value)); } but on selection of any of the value in dropdown list,it doesn't goes on the ddlUser_SelectedIndexChanged.I dont know why,that's why I think value not displayed in textbox because it failed to called the method "PopulateFormFields".Please Tell me what to do next.

Mohsin Arif · Answer

please confirm me is there fire the event of ddlUser_SelectedIndexChanged put the breakpoint and check otherwise send me html side code.

Priyanka Singh · Answer

On Selection of dropdownlist " ddlUser_SelectedIndexChanged " does not work.

Priyanka Singh · Answer

Hey Mohsin Arif I use Visual studio 2010 it shows error in my program.

Mohsin Arif · Answer

you are doing fine there is no issue in your code Count is property and also a method . but why this error is occured on your side i cant understand. while your same code i run but i haven't got any error

Mohsin Arif · Answer

which you Use VS ?