My project manager ask me to do the Active Directory User Selective inductive method to seperate out the active directory users from the telephone extension list users who were binded in their Display Name with the Active Directory, the following is a small module for our companies sharepoint protal management server to maintain all the resources in a centeral station as repository for that we have developed a list contains the extension list of all employees…
the list does has two field types, column named <Employee Name> and <Extension Number>
Note : <Employee Name> Field maps with the Display Name of the Active Directory Users List…
the following xCode.GetADUser.Field.cs
namespace xCode.GetADUser
{
using System;
using System.Runtime.InteropServices;
using System.Security.Permissions;
using Microsoft.SharePoint;
using Microsoft.SharePoint.WebControls;
using Microsoft.SharePoint.Security;
[CLSCompliant(false)]
[Guid("d3fee3ce-4e3a-4990-8bde-3b52d3596be4")]
public class ADUserField : SPFieldText
{
/// <summary>
///
/// </summary>
/// <param name="fields"></param>
/// <param name="fieldName"></param>
public GetADUserField(SPFieldCollection fields, string fieldName)
: base(fields, fieldName)
{
}
/// <summary>
///
/// </summary>
/// <param name="fields"></param>
/// <param name="typeName"></param>
/// <param name="displayName"></param>
public GetADUserField(SPFieldCollection fields, string typeName, string displayName)
: base(fields, typeName, displayName)
{
}
/// <summary>
///
/// </summary>
public override BaseFieldControl FieldRenderingControl
{
[SharePointPermission(SecurityAction.LinkDemand, ObjectModel = true)]
get
{
BaseFieldControl fieldControl = new GetADUserFieldControl();
fieldControl.FieldName = this.InternalName;
return fieldControl;
}
}
}
}
the below code describes the functionality for the get Active directory Users…
lets take two asp.net controls for the following functionality, where the dropdownlist list up all the users from the active directory irregardless any condition except the object.filter by user…
// Golbal variables for the Get Active Directory Userfield control.
private DropDownList ddlRemainADUsers;
private Label lblADUser;
the above DropDownList list will visible only on the Newform.aspx and Editform.aspx whereas the Label control will visible only for an alternate form (Dispform.aspx)
/// <summary>
/// CreateChildControls() will be called by the PreRender stage
/// </summary>
protected override void CreateChildControls()
{
base.CreateChildControls();
//Filtering the ControlMode for field in both Newform.aspx as well as Editform.aspx
if (this.ControlMode == SPControlMode.Edit ||
this.ControlMode == SPControlMode.New)
{
// Initialize the ddlRemainADUsers DropDownList with new instance
this.ddlRemainADUsers = new DropDownList();
// Gets the current site from the SPContext
SPSite objSite = SPContext.GetContext(this.Context).Site;
// Binding all Active directory Users into the AdUsersList ArrayList Control.
// return all users from the Active Directory.
ArrayList AdUsersList = getADUsers();
// ArrayList to be subtracted to the AdUsersList ArrayList...
ArrayList UserList = new ArrayList();
// Remained Users after the Seperation done...
ArrayList RemainList = new ArrayList();
SPWeb objWeb = objSite.OpenWeb();
// validating the List Item Count not set to be 0 or less than that...
if (web.Lists[<listName>].ItemCount > 0) {
SPListItemCollection objListItemColl = objWeb.Lists[<listName>].Items;
// Iterating through each ListItem from the respective list <listName>
foreach (SPListItem objListItem in objListItemColl) {
if (objListItem[<EmployeeNameField>] == null) {
UserList.Add(""); // Adding the empty string.Empty when the field value set to be null...
}
else {
UserList.Add(_Item[<EmployeeNameField>].ToString()); // else addnig the field value
}
}
// Here the Magic code.
int Count = AdUsersList.Count;
if (!(UserList.Count <= 0)) {
for (int inr = 0; inr < Count; inr++) {
// if Active Directory Users were not found to be in the UserList ArrayList then add those users into the RemainList ArrayList
if (!UserList.Contains(AdUsersList[inr]))
RemainList.Add(AdUsersList[inr].ToString());
}
}
else {
for (int inr = 0; inr < Count; inr++) {
RemainList.Add(AdUsersList[inr].ToString());
}
}
}
else {
int Count = AdUsersList.Count;
for (int inr = 0; inr < Count; inr++) {
RemainList.Add(AdUsersList[inr].ToString());
}
}
// Sorting the ArrayList if needed
RemainList.Sort();
// Binds the RemainList Users to the ddlRemainADUsers DropDownList
this.ddlRemainADUsers.DataSource = RemainList;
this.ddlRemainADUsers.DataBind(); // Call a Simple DataBind()
// Get the current value of the field.
string currentValue = (string)this.ItemFieldValue;
if (!string.IsNullOrEmpty(currentValue)) { // Checks or Validates the currentValue
this.ddlRemainADUsers.SelectedValue = currentValue;
}
else if (this.ddlRemainADUsers.Items.Count > 0) {
this.ddlRemainADUsers.SelectedIndex = 0;
}
// Add an Attributes for "onchange" event for the ddlRemainADUsers DropDownList
this.ddlRemainADUsers.Attributes["onchange"] = "this.options[this.selectedIndex].value;";
base.Controls.Add(ddlRemainADUsers);
}
string text = null;
object textObject = this.ItemFieldValue;
if (textObject != null) {
// ReBinds the textObject Value to the textbox for the View Mode
text = (string)textObject;
}
if (text == null || text == string.Empty) {
text = this.ddlRemainADUsers.SelectedValue;
}
//Filtering the ControlMode for field in both Dispform.aspx
if (this.ControlMode == SPControlMode.Display) {
lblADUser = new Label();
lblADUser.Text = text.ToString();
base.Controls.Add(lblADUser);
}
}
/// <summary>
/// Updates the Field Value with from the ddlRemainADUsers.SelectedValue to the ItemFieldValue.Value
/// from where we rebind the ItemFieldValue to the textObject Value
/// </summary>
public override void UpdateFieldValueInItem()
{
this.EnsureChildControls();
try {
this.Value = this.ddlRemainADUsers.SelectedValue;
this.ItemFieldValue = this.Value;
}
catch {
;
}
}
/// <summary>
/// Render the xCode.GetADUser
/// </summary>
/// <param name="output"></param>
protected override void Render(HtmlTextWriter output)
{
if (this.ControlMode == SPControlMode.Edit ||
this.ControlMode == SPControlMode.New) {
this.ddlRemainADUsers.RenderControl(output);
}
if (this.ControlMode == SPControlMode.Display) {
this.lblADUser.RenderControl(output);
}
}
}
might thing this helps a lot for the comparing as well as subtracting the Active Directory Users with the Desired List Column…
Cheers !!!
Happy Coding…
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