I have an application that get data and write xml file from this data.
The application should put the data as a message in the Message Queuing.
Every time I encounter an error saying: "The queue does not exist or you do
not have sufficient permissions to perform the operation".

This is designer code:
---------------------

namespace ReceiveOrder
{
   partial class ReceiveOrder
   {
       /// <summary>
       /// Required designer variable.
       /// </summary>
       private System.ComponentModel.IContainer components = null;

       /// <summary>
       /// Clean up any resources being used.
       /// </summary>
       /// <param name="disposing">true if managed resources should be
disposed; otherwise, false.</param>
       protected override void Dispose(bool disposing)
       {
           if (disposing && (components != null))
           {
               components.Dispose();
           }
           base.Dispose(disposing);
       }

       #region Windows Form Designer generated code

       /// <summary>
       /// Required method for Designer support - do not modify
       /// the contents of this method with the code editor.
       /// </summary>
       private void InitializeComponent()
       {
           this.label1 = new System.Windows.Forms.Label();
           this.label2 = new System.Windows.Forms.Label();
           this.label3 = new System.Windows.Forms.Label();
           this.Status = new System.Windows.Forms.Label();
           this.WelcomeMessage = new System.Windows.Forms.Label();
           this.ProductID = new System.Windows.Forms.TextBox();
           this.Quantity = new System.Windows.Forms.TextBox();
           this.EmailAddress = new System.Windows.Forms.TextBox();
           this.Checkout = new System.Windows.Forms.Button();
           this.SuspendLayout();
           //
           // label1
           //
           this.label1.AutoSize = true;
           this.label1.Location = new System.Drawing.Point(12, 26);
           this.label1.Name = "label1";
           this.label1.Size = new System.Drawing.Size(55, 13);
           this.label1.TabIndex = 0;
           this.label1.Text = "ProductID";
           //
           // label2
           //
           this.label2.AutoSize = true;
           this.label2.Location = new System.Drawing.Point(12, 66);
           this.label2.Name = "label2";
           this.label2.Size = new System.Drawing.Size(49, 13);
           this.label2.TabIndex = 1;
           this.label2.Text = "Quantity";
           //
           // label3
           //
           this.label3.AutoSize = true;
           this.label3.Location = new System.Drawing.Point(12, 106);
           this.label3.Name = "label3";
           this.label3.Size = new System.Drawing.Size(73, 13);
           this.label3.TabIndex = 2;
           this.label3.Text = "Email Address";
           //
           // Status
           //
           this.Status.AutoSize = true;
           this.Status.Location = new System.Drawing.Point(12, 196);
           this.Status.Name = "Status";
           this.Status.Size = new System.Drawing.Size(0, 13);
           this.Status.TabIndex = 3;
           //
           // WelcomeMessage
           //
           this.WelcomeMessage.AutoSize = true;
           this.WelcomeMessage.Location = new System.Drawing.Point(12,
236);
           this.WelcomeMessage.Name = "WelcomeMessage";
           this.WelcomeMessage.Size = new System.Drawing.Size(0, 13);
           this.WelcomeMessage.TabIndex = 4;
           //
           // ProductID
           //
           this.ProductID.Location = new System.Drawing.Point(88, 22);
           this.ProductID.Name = "ProductID";
           this.ProductID.Size = new System.Drawing.Size(243, 20);
           this.ProductID.TabIndex = 5;
           //
           // Quantity
           //
           this.Quantity.Location = new System.Drawing.Point(88, 62);
           this.Quantity.Name = "Quantity";
           this.Quantity.Size = new System.Drawing.Size(243, 20);
           this.Quantity.TabIndex = 6;
           //
           // EmailAddress
           //
           this.EmailAddress.Location = new System.Drawing.Point(88, 102);
           this.EmailAddress.Name = "EmailAddress";
           this.EmailAddress.Size = new System.Drawing.Size(243, 20);
           this.EmailAddress.TabIndex = 7;
           //
           // Checkout
           //
           this.Checkout.Location = new System.Drawing.Point(88, 141);
           this.Checkout.Name = "Checkout";
           this.Checkout.Size = new System.Drawing.Size(75, 23);
           this.Checkout.TabIndex = 8;
           this.Checkout.Text = "Checkout!";
           this.Checkout.UseVisualStyleBackColor = true;
           this.Checkout.Click += new
System.EventHandler(this.Checkout_Click);
           //
           // ReceiveOrder
           //
           this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
           this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
           this.ClientSize = new System.Drawing.Size(343, 197);
           this.Controls.Add(this.Checkout);
           this.Controls.Add(this.EmailAddress);
           this.Controls.Add(this.Quantity);
           this.Controls.Add(this.ProductID);
           this.Controls.Add(this.WelcomeMessage);
           this.Controls.Add(this.Status);
           this.Controls.Add(this.label3);
           this.Controls.Add(this.label2);
           this.Controls.Add(this.label1);
           this.Name = "ReceiveOrder";
           this.Text = "Receive Order";
           this.ResumeLayout(false);
           this.PerformLayout();

       }

       #endregion

       private System.Windows.Forms.Label label1;
       private System.Windows.Forms.Label label2;
       private System.Windows.Forms.Label label3;
       private System.Windows.Forms.Label Status;
       private System.Windows.Forms.Label WelcomeMessage;
       private System.Windows.Forms.TextBox ProductID;
       private System.Windows.Forms.TextBox Quantity;
       private System.Windows.Forms.TextBox EmailAddress;
       private System.Windows.Forms.Button Checkout;
   }
}

-----------------------------------------------------------------------------------------

This is my code:
---------------

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Xml;
using System.Messaging;
using System.Globalization;

namespace ReceiveOrder
{
   public partial class ReceiveOrder : Form
   {

       AccessControlList acl;
       MessageQueue queue;

       public ReceiveOrder()
       {
           InitializeComponent();

           MakeAccessControlList();
       }

       private void MakeAccessControlList()
       {
           //Set Permissions on queue with AccessControlList
           //Grant permissions to multiple users at the same time

           acl = new AccessControlList();

           AccessControlEntry ace = new AccessControlEntry();
           ace.Trustee = new Trustee(@"bishoylaptop\bishoy");
           ace.EntryType = AccessControlEntryType.Deny;
           ace.GenericAccessRights = GenericAccessRights.Write;
           ace.StandardAccessRights = StandardAccessRights.Write;

           acl.Add(ace);
       }

       private void SetQueuePermissions()
       {
           queue.SetPermissions(acl);

           //Set Permissions on queue with MessageQueueAccessControlEntry
           MessageQueueAccessControlEntry msmqace = new
MessageQueueAccessControlEntry(new Trustee("Everyone"),
MessageQueueAccessRights.WriteMessage, AccessControlEntryType.Allow);
           queue.SetPermissions(msmqace);

           //Set permissions on queue with those last 2 overloads.
           queue.SetPermissions(@"bishoylaptop\bishoy",
MessageQueueAccessRights.ReceiveMessage);
           queue.SetPermissions(@"bishoylaptop\bishoy",
MessageQueueAccessRights.WriteMessage, AccessControlEntryType.Allow);

       }

       private void SendMessage(StringWriter sw, DateTime dt)
       {
           // Send the XML document to the message queue.
           System.Messaging.Message msg = new
System.Messaging.Message(sw.ToString(), new ActiveXMessageFormatter());
           queue = new MessageQueue(@".\Private$\MyOrderQueue");

           SetQueuePermissions();

           if (queue.Transactional)   // Gets a value that indicates
whether the queue accepts only transactions
           {
               MessageQueueTransaction trans1 = new
MessageQueueTransaction();
               trans1.Begin();
               queue.Send(msg, "Order[" + dt + "]", trans1);
               trans1.Commit();
           }
           else
           {
               queue.Send(msg, "Order[" + dt + "]");

           }

           sw.Close();

           // Confirm that the order was received.
           this.Status.Text = "Thank you, your order was received at " + dt
+ ".";
       }

       private void Checkout_Click(object sender, EventArgs e)
       {
           // Create an XmlWriter with an XmlWriterSettings object that
specifies indentation and new lines for attributes.
           XmlWriterSettings settings = new XmlWriterSettings();
           settings.Indent = true;
           settings.IndentChars = "\t";
           settings.NewLineOnAttributes = true;   // This will write
attributes on new line
           StringWriter sw = new
StringWriter(CultureInfo.InvariantCulture);   // Culture Independent
           XmlWriter writer = XmlWriter.Create(sw, settings);   // Create
9th overload is used as StringWriter : TextWriter

           // Call the WriteStartDocument method.
           writer.WriteStartDocument();

           // Writing a comment to the XML Document.
           writer.WriteComment("This message was generated automatically");

           // Writing the root element start tag.
           writer.WriteStartElement("Order");

           // Writing the Email and Timestamp attributes.
           writer.WriteAttributeString("EmailAddress",
this.EmailAddress.Text);
           DateTime dt = DateTime.Now;
           writer.WriteStartAttribute("Timestamp");
           writer.WriteValue(dt);
           writer.WriteEndAttribute();

           // Writing the Product and Quantity elements.
           writer.WriteStartElement("ProductID");
           writer.WriteValue(XmlConvert.ToInt32(this.ProductID.Text));
           writer.WriteEndElement();

           writer.WriteStartElement("Quantity");
           writer.WriteValue(XmlConvert.ToInt32(this.Quantity.Text));
           writer.WriteEndElement();

           // Writing the Root Element closing tag.
           writer.WriteEndElement();

           // Finish writing the XML document.
           writer.WriteEndDocument();
           writer.Close();

           SendMessage(sw, dt);
       }
   }
}