the server is unwilling to process the request active directory

I am trying to update a user's ad properties but I am getting error:
the server is unwilling to process the request active directory on commit chnages function();

Please see code below:

using

System;

using

System.Data;

using

System.Configuration;

using

System.Web.Security;

using

System.Web.UI;

using

System.Web.UI.WebControls;

using

System.Web.UI.WebControls.WebParts;

using

System.Web.UI.HtmlControls;

using

System.DirectoryServices;

using

System.DirectoryServices.ActiveDirectory;

using

System.DirectoryServices.Protocols;

using

System.DirectoryServices.AccountManagement;

using

System.Collections;

using

System.ComponentModel;

using

System.IO;

using

System.Xml;

using

System.Xml.XPath;

using

System.Diagnostics.CodeAnalysis;

public

partial class _Default : System.Web.UI.Page

{

TxtUserId.Focus();

}

{

de.Path =

protected void Page_Load(object sender, EventArgs e)public static DirectoryEntry GetDirectoryEntry()DirectoryEntry de = new DirectoryEntry();"LDAP://vaa.vtg.local"; /*modified*/

de.Username =

"install";/*modified*/

de.Password =

"C0pyright";/*modified*/

de.AuthenticationType =

}

{

AuthenticationTypes.Secure;return de;protected void CmdSearch_Click(object sender, EventArgs e)// System.Diagnostics.Debugger.Break();

username = TxtUserId.Text;

deSearch.SearchRoot = de;

deSearch.Filter =

{

Response.Write(

TxtUserId.Text =

}

String username;DirectoryEntry de = GetDirectoryEntry();DirectorySearcher deSearch = new DirectorySearcher();"(&(objectClass=user) (SAMAccountName=" + username + "))";SearchResultCollection results = deSearch.FindAll();if (results.Count == 0)"");" ";/* global::System.Windows.Forms.MessageBox.Show("This User ID Does not Exist,please type right ID");*/

else

{

DirectoryEntry entry = GetDirectoryEntry();String account = username.Replace(@"vaa\", "");try

{

search.Filter =

search.PropertiesToLoad.Add(

{

LblDispName.Text = result.Properties[

LblDept.Text = result.Properties[

LblJob.Text = result.Properties[

LblEmpType.Text = result.Properties[

LblBV.Text = result.Properties[

manager = managerModified[0].Substring(3);

LblMngr.Text = manager;

LblCO.Text = result.Properties[

LblCountry.Text = result.Properties[

LblTelephone.Text = result.Properties[

Lblmail.Text = result.Properties[

LblDN.Text = result.Properties[

{

memberof = memberofModified[0].Substring(3);

ListMemberOf.Items.Add(memberof);

}

{

}

{

DirectorySearcher search = new DirectorySearcher(entry);"(SAMAccountName=" + account + ")";"displayName");"department");"title");"employeeType");"vaaBusinessVertical");"manager");"company");"co");"telephoneNumber");"mail");"distinguishedName");"memberOf");SearchResult result = search.FindOne();if (result != null)"displayname"][0].ToString();"department"][0].ToString();"title"][0].ToString();"employeeType"][0].ToString();"vaaBusinessVertical"][0].ToString();String manager = result.Properties["manager"].ToString();string[] managerModified = manager.Split(',');"company"][0].ToString();"co"][0].ToString();"telephoneNumber"].ToString();"mail"][0].ToString();"distinguishedName"][0].ToString();for (int groupCount = 0; groupCount < result.Properties["memberOf"].Count; groupCount++)String memberof = result.Properties["memberOf"][groupCount].ToString();string[] memberofModified = memberof.Split(',');catch (Exception ex)string debug = ex.Message;protected void CmdAssign_Click(object sender, EventArgs e)// System.Diagnostics.CodeAnalysis();

// System.Diagnostics.Debug;

// System.Diagnostics.DebuggableAttribute();

username = TxtUserId.Text;

deSearch.SearchRoot = de;

deSearch.Filter =

String username;String userdn;DirectoryEntry de = GetDirectoryEntry();DirectorySearcher deSearch = new DirectorySearcher();"(&(objectClass=user) (SAMAccountName=" + username + "))";SearchResultCollection results = deSearch.FindAll();DirectoryEntry entry = GetDirectoryEntry();String account = username.Replace(@"vaa\", "");try

{

search.Filter =

search.PropertiesToLoad.Add(

userdn = result.Properties[

Response.Write(userdn);

{

entry =

ListBox1.SelectedIndex = 0;

DirectorySearcher search = new DirectorySearcher(entry);"(SAMAccountName=" + account + ")";"distinguishedName");"memberOf");SearchResult result = search.FindOne();"distinguishedName"][0].ToString();if (DDListDeptTemp.SelectedItem.ToString() == "SSS")new DirectoryEntry("LDAP://vaa.vtg.local", "aryam", "Pucchu9nonu", AuthenticationTypes.Secure);string groups = ListBox1.SelectedItem.Text;/*Listbox1.setselected(0,True);*/

/*entry.Properties["memberOf"].Add(groups);*/

entry.Properties[

Response.Write(disp);

"displayname"].Value = "XYZ";string disp = entry.Properties["displayname"][0].ToString();/*Response.Write("");*/

entry.CommitChanges();

Response.Write(disp);

entry.Close();

}

{

entry =

xmlDocument.Load(

else if (DDListDeptTemp.SelectedValue == "Administration LHR (3010) - Template1")new DirectoryEntry("LDAP://vaa.vtg.local", "install", "C0pyright", AuthenticationTypes.Secure);XmlDocument xmlDocument = new XmlDocument();"XMLFile2.xml");XmlNodeList xmldept = xmlDocument.GetElementsByTagName("Group1");string x;try

{

//Search user name in AD Group

//string pathADGroup = "LDAP://vaa.vtg.local/CN=GS_CTX_BO_GTI,OU=Groups,OU=United Kingdom,DC=vaa,DC=vtg,DC=local";

objEntry.Path =

objEntry.Username=

objEntry.Password =

objEntry.AuthenticationType=

DirectoryEntry objEntry = new DirectoryEntry();"LDAP://vaa.vtg.local/CN=GS_CTX_BO_GTI,OU=Groups,OU=United Kingdom,DC=vaa,DC=vtg,DC=local";@"vaa\install";"C0pyright";AuthenticationTypes.Secure;// objEntry.Properties["member"].Add("testid");

// DirectoryEntries users = objEntry.Children;

// DirectoryEntry user = users.Add("CN=Megha Arya", "user");

// user.Properties["company"].Add("Some Company");

objEntry.Properties[

"member"].Value = "GS_CTX_BO_GTI";// objEntry.Properties["member"][0].Equals(objEntry.Path);

// string d1= objEntry.Properties["title"][0].ToString();

try

{

objEntry.CommitChanges();

}

{

}

catch (Exception ex1)string debug1 = ex1.Message;// string obj = objEntry.Children.Find("member").ToString();

// Response.Write(obj);

objEntry.Close();

}

{

}

catch (Exception ex)string debug = ex.Message;//DirectoryEntry dirEntry = new DirectoryEntry("LDAP://vaa.vtg.local");

//DirectorySearcher search = new DirectorySearcher(dirEntry);

//search.Filter = "(SAMAccountName= GS_CTX_BO_GTI)";

//search.PropertiesToLoad.Add("distinguishedName");

//dirEntry.Properties["member"].Add("testid");

//dirEntry.CommitChanges();

//dirEntry.Close();

// DDListDeptTemp.Items.Add("-----------Select-----------");

// foreach (XmlNode node in xmldept)

// {

// x = node.Attributes.GetNamedItem("text").Value;

//// group.Invoke("Add", new object[] { deUser.Path.ToString() });

// entry.Properties["telephoneNumber"].Add("00001");

// //entry = de.Children.Add("DN=",x);

// // String memberof = result.Properties["memberOf"][groupCount].ToString();

// // string[] memberofModified = memberof.Split(',');

// // memberof = memberofModified[0].Substring(3);

// // ListMemberOf.Items.Add(memberof);

// try

// {

// entry.CommitChanges();

// }

// catch (Exception ex1)

// {

// string desdsd = ex1.Message;

// }

// Response.Write("delts");

// }

//}

{

entry = new DirectoryEntry("LDAP://" + groupdn2);

entry.Properties["member"].Add(userdn);

entry.CommitChanges();

entry.Close();

} */

/*if (Dept == "IOCC")

}

{

}

{

Response.Write(

}

{

TxtUserId.Text =

LblDispName.Text =

LblDept.Text =

LblJob.Text =

LblEmpType.Text =

LblBV.Text =

LblMngr.Text =

LblCO.Text =

LblCountry.Text =

LblTelephone.Text =

Lblmail.Text =

LblDN.Text =

catch (Exception ex)string debug = ex.Message;protected void CmdExit_Click(object sender, EventArgs e)"");protected void CmdReset_Click(object sender, EventArgs e)"";"";"";"";"";"";"";"";"";"";"";"";//LblGM.Text = "";

ListMemberOf.Items.Clear();

}

{

DDListDept.Items.Clear();

DDListDept.Items.Add(

}

protected void DDListBV_SelectedIndexChanged(object sender, EventArgs e)if (DDListBV.SelectedValue == "Airports, Cargo and Overseas")"-------------Select--------------- ");"Airports");"Cargo");"Overseas");else

{

DDListDept.Items.Clear();

DDListDept.Items.Add(

}

{

xmlDocument.Load(

DDListDeptTemp.Items.Add(

{

x = node.Attributes.GetNamedItem(

DDListDeptTemp.Items.Add(x);

}

{

DDListDeptTemp.Items.Clear();

DDListDeptTemp.Items.Add(

}

{

}

{

xmlDocument.Load(

DDListDeptTemp.Items.Add(

{

x = node.Attributes.GetNamedItem(

ListBox1.Items.Add(x);

if (DDListBV.SelectedValue == "Back Office")"BB");protected void DDListDept_SelectedIndexChanged(object sender, EventArgs e)if (DDListDept.SelectedValue == "Airports")XmlDocument xmlDocument = new XmlDocument();"XMLFile2.xml");XmlNodeList xmldept = xmlDocument.GetElementsByTagName("Department");string x;"-----------Select-----------");foreach (XmlNode node in xmldept)"text").Value;else if (DDListDept.SelectedValue == "Cargo")" ");"DDD");protected void ListBox1_SelectedIndexChanged(object sender, EventArgs e)protected void DDListDeptTemp_SelectedIndexChanged(object sender, EventArgs e)if (DDListDeptTemp.SelectedValue == "Administration LHR (3010) - Template1")XmlDocument xmlDocument = new XmlDocument();"XMLFile2.xml");XmlNodeList xmldept = xmlDocument.GetElementsByTagName("Group1");string x;"-----------Select-----------");foreach (XmlNode node in xmldept)"text").Value;// Response.Write(x);

}

{

}

{

}

protected void XmlDataSource1_Transforming(object sender, EventArgs e)protected void ListMemberOf_SelectedIndexChanged(object sender, EventArgs e)

PLease help