CODEWITHSUNDEEP
c#asp.netado.net
Serdia
Serdia

Reputation: 4428

WebForm1 doesnt contain a definition for 'Context'

I am new to C#. Just following simple examples from Kudvenkat tutorials. http://csharp-video-tutorials.blogspot.com/2012/10/calling-stored-procedure-with-output.html

Keep getting those errors and cannot understand what am I doing wrong?

My .aspx file:

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="WebForm1.aspx.cs" Inherits="WebForm1"%>

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
        <table style="border: 1px solid black; font-family:Arial">
            <tr>
                <td>
                    Employee Name
                </td>
                <td>
                    <asp:TextBox ID="txtEmployeeName" runat="server"></asp:TextBox>
                </td>
            </tr>        
            <tr>
                <td>
                    Gender
                </td>
                <td>
                <asp:DropDownList ID="ddlGender" runat="server">
                    <asp:ListItem>Male</asp:ListItem>
                    <asp:ListItem>Female</asp:ListItem>
                </asp:DropDownList>
                </td>
            </tr> 
            <tr>
                <td>
                    Salary
                </td>
                <td>
                    <asp:TextBox ID="txtSalary" runat="server"></asp:TextBox>
                </td>
            </tr>       
            <tr>
                <td colspan="2">
                    <asp:Button ID="btnSubmit" runat="server" Text="Submit" onclick="btnSubmit_Click" />
                </td>
            </tr>          
            <tr>
                <td colspan="2">
                    <asp:Label ID="lblMessage" runat="server"></asp:Label>
                </td>
            </tr>  
        </table>
    </form>
</body>
</html>

In my aspx.cs file txtEmployeeName.Text, ddlGender.SelectedValue and 'txtSalary.Text' have red underline that says "The name .txt does not exist in a current context"

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Configuration;


namespace adoDemo
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void btnSubmit_Click(object sender, EventArgs e)

        {
            //Read the connection string from Web.Config file
            string ConnectionString = ConfigurationManager.ConnectionStrings["DBCS"].ConnectionString;
            using (SqlConnection con = new SqlConnection(ConnectionString))
            {
                //Create the SqlCommand object
                SqlCommand cmd = new SqlCommand("spAddEmployee", con);
                //Specify that the SqlCommand is a stored procedure
                cmd.CommandType = System.Data.CommandType.StoredProcedure;

                //Add the input parameters to the command object
                cmd.Parameters.AddWithValue("@Name", txtEmployeeName.Text);
                cmd.Parameters.AddWithValue("@Gender", ddlGender.SelectedValue);
                cmd.Parameters.AddWithValue("@Salary", txtSalary.Text);

                //Add the output parameter to the command object
                SqlParameter outPutParameter = new SqlParameter();
                outPutParameter.ParameterName = "@EmployeeId";
                outPutParameter.SqlDbType = System.Data.SqlDbType.Int;
                outPutParameter.Direction = System.Data.ParameterDirection.Output;
                cmd.Parameters.Add(outPutParameter);

                //Open the connection and execute the query
                con.Open();
                cmd.ExecuteNonQuery();

                //Retrieve the value of the output parameter
                string EmployeeId = outPutParameter.Value.ToString();
                lblMessage.Text = "Employee Id = " + EmployeeId;
            }
        }
    }
}

And my aspx.designer.cs file:

//------------------------------------------------------------------------------
// <auto-generated>
//     This code was generated by a tool.
//
//     Changes to this file may cause incorrect behavior and will be lost if
//     the code is regenerated. 
// </auto-generated>
//------------------------------------------------------------------------------

namespace adoDemo {


    public partial class WebForm1 {

        /// <summary>
        /// form1 control.
        /// </summary>
        /// <remarks>
        /// Auto-generated field.
        /// To modify move field declaration from designer file to code-behind file.
        /// </remarks>
        protected global::System.Web.UI.HtmlControls.HtmlForm form1;

        /// <summary>
        /// txtEmployeeName control.
        /// </summary>
        /// <remarks>
        /// Auto-generated field.
        /// To modify move field declaration from designer file to code-behind file.
        /// </remarks>
        protected global::System.Web.UI.WebControls.TextBox txtEmployeeName;

        /// <summary>
        /// ddlGender control.
        /// </summary>
        /// <remarks>
        /// Auto-generated field.
        /// To modify move field declaration from designer file to code-behind file.
        /// </remarks>
        protected global::System.Web.UI.WebControls.DropDownList ddlGender;

        /// <summary>
        /// txtSalary control.
        /// </summary>
        /// <remarks>
        /// Auto-generated field.
        /// To modify move field declaration from designer file to code-behind file.
        /// </remarks>
        protected global::System.Web.UI.WebControls.TextBox txtSalary;

        /// <summary>
        /// btnSubmit control.
        /// </summary>
        /// <remarks>
        /// Auto-generated field.
        /// To modify move field declaration from designer file to code-behind file.
        /// </remarks>
        protected global::System.Web.UI.WebControls.Button btnSubmit;

        /// <summary>
        /// lblMessage control.
        /// </summary>
        /// <remarks>
        /// Auto-generated field.
        /// To modify move field declaration from designer file to code-behind file.
        /// </remarks>
        protected global::System.Web.UI.WebControls.Label lblMessage;
    }
}

Upvotes: 0

Views: 2888

Answers (2)

VDWWD
VDWWD

Reputation: 35564

The problem lies in this line

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="WebForm1.aspx.cs" Inherits="WebForm1"%>

It should be 

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="WebForm1.aspx.cs" Inherits="adoDemo.WebForm1"%>

Inherits should also contain the namespace name, in your case adoDemo

Upvotes: 1

Mohit S
Mohit S

Reputation: 14064

You might get this error due to and assembly caching problem because VS gets confused about what actually needs to be recompiled. Just delete the cache items and recompile normally.

Take a look in the designer file and see if Visual Studio created an entry in there for the controls. Make sure you don't have another file somewhere with a similar declarations.

Many times, best way to fix this is to delete, re-create and re-name the form. Since, We're not supposed to edit the designer file ourselves.

Upvotes: 2

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