Entity Framework error whilepopulate the TextBox in the form

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.

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.

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)

welcome my pleasure..

Mohsin Arif

Thank you so much now it worked.

<asp:DropDownList ID="ddlUser" runat="server" AppendDataBoundItems="true" AutoPostBack="true" onselectedindexchanged="ddlUser_SelectedIndexChanged">

Mohsin Arif

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

<%@ Page Title="" 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" />

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

<%@ 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>
Company Name:
<asp:TextBox ID="tbCompanyName" runat="server" />
Contact Name:
<asp:TextBox ID="tbContactName" runat="server" />
Contact Title:
<asp:TextBox ID="tbContactTitle" runat="server" />
Address:
<asp:TextBox ID="tbAddress" runat="server" />
City:
<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.

please confirm me is there fire the event of ddlUser_SelectedIndexChanged

put the breakpoint and check otherwise send me html side code.

On Selection of dropdownlist "ddlUser_SelectedIndexChanged" does not work.

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

Hey

Mohsin Arif

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

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

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Mohsin Arif7y ago
Accepted 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 Ghadage7y ago
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 Arif7y ago
welcome my pleasure..
Priyanka Singh7y ago
Mohsin Arif

Thank you so much now it worked.
Mohsin Arif7y ago
1. <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

Entity Framework error whilepopulate the TextBox in the form

Mohsin Arif

Add New

Mohsin Arif