How can we use LookUpControl in my Custom page in CRM 4.0

I'm trying to replicate the functionality of this CRM 4.0 in my custom aspx page

<nobr>
<asp:TextBox ID="lookupresult" runat="server"></asp:TextBox>
<img src="/_imgs/btn_off_lookup.gif" onclick="ShowOwnerLookupDialog()" />

<script language="javascript">
function ShowOwnerLookupDialog()
{
var lookupItems = showModalDialog( '/_controls/lookup/lookupsingle.aspx?class=BasicOwner&objecttypes=8,2020&browse=0&ShowNewButton=1&ShowPropButton=1&DefaultType=0' , null, '' );
document.all.lookupresult.value = lookupItems.items[0].id;
}
</script>
</nobr>

Update Filtered lookup data in CRM 4.0

For this We have to pass fetch xml string using one of the parameters "search" recognised by the server otherwise exception is thrown (there is a way to disable parameters check through the registry setting
DisableParameterFilter, but it's easier without yet another undocumented setting).
Since we want to disable search functionality it makes sense to re-use search parameter.

Use the following code:

This line of code using for single entity
//The attribute where lookup is attached
var field = crmForm.all.pricelevelid;

// Ensure that search box is not visible in a lookup dialog
field.lookupbrowse = 1;
// Pass fetch xml through search value parameter
field.AddParam("search",
"<fetch mapping='logical'><entity name='pricelevel'>"
+ "<filter><condition attribute='name' operator='eq' value='pricelist name' /></filter></entity></fetch>");


This line of code using for multiple entity
//Lookup will show all the Child users of current loggedIn user

//Return all child users
var targetUserUnits = GetChildusers() //for eg: <value>"+Value1+"</value><value>"+Value2+"</value>
//The attribute where lookup is attached
var field = crmForm.all.new_userid;
//Ensure that search box is not visible in a lookup dialog
field.lookupbrowse = 1;

field.AddParam("search",
"<fetch mapping='logical'><entity name='systemuser'>"
+"<all-attributes/>"
+"<link-entity name='new_nesteduser' from='new_userid' to='systemuserid'>"
+"<filter type='and'><condition attribute='new_lft' operator='between'>"
+targetUserUnits
+"</condition></filter></link-entity></entity></fetch>");

Unsupported
You can manage it from lookup form means if this parameter contains any value then apply this filter otherwise use as origional.
to do this open the page "C:\Program Files\Microsoft Dynamics CRM\CRMWeb\_controls\lookup\lookupsingle.aspx " and change it accordingly as required.

For Eg.

void crmgrid_PreRender( object sender , EventArgs e )
{
// As we don't want to break any other lookups, ensure that we use workaround only if
// search parameter set to fetch xml.
<strong>if (crmGrid.Parameters["search"] != null && crmGrid.Parameters["search"].StartsWith("<fetch"))
{
crmGrid.Parameters.Add("fetchxml", crmGrid.Parameters["search"]);
// searchvalue needs to be removed as it's typically set to a wildcard '*'
crmGrid.Parameters.Remove("searchvalue");
// Icing on a cake - ensure that user cannot create new contact outside of the account
// and then select it.
this._showNewButton = false;
} </strong>
}

Expose the toggling function at the window level in CRM 4.0

After create a function in page load event of any entity in CRM and tried to call it from onSave or any attribute OnChange event
then you don't required to type the same function again and again just toggle this function at the bottom of pageLoad
event, to do this use the following code

//Expose the toggling function at the window level
this.functionName = functionName;

Determine Space Available/Used for Entities

Determine Space Available for your Entity

If you decide to add a custom attribute to an entity, you can determine if there is
space available for the attribute in the entity's extension table by running this
Transact-SQL query on the _CRM database.Use this following query:

select EntityName=e.name,Bytes_Remaining=8060-(Sum(a.length))
from entity e join attribute a on e.entityid=a.entityid
where a.iscustomerfield=1 and a.islogical=0
group by e.Name

Determine Space Used for your Entity

Alternatively, you can determine the number of bytes already used by custom
attributes for an entity by running this Transact-SQL query on the
_CRM database.Use this following query:

select EntityName=e.Name,Physical_size=Sum(a.length)
from entity e join attribute a on e.entityid=a.entityid
where a.iscustomerfield=1 and a.islogical=0
group by e.Name

Increase the Tab limit in MSCRM 4.0

By default the max number of tabs allowed in CRM Form is 8.

The max tab limit is defined in JavaScript of formeditor.aspx. This page can be found at the following location “\Microsoft Dynamics CRM\CRMWeb\Tools\FormEditor”.
You can change the count specified in the _iMaxTabs to increase the count.

Create and Sending Email in CRM 4.0

Use the following code to send an email to multiple customers in CRM4.0

SendMailToMembers(ICrmService crmService, ArrayList members, String msgBody, Guid ownerID, Guid userID,string subject)
{

// create an email
email emailCreate = new email();
emailCreate.subject = subject;
emailCreate.description = msgBody;

//specify the owner for the mail
emailCreate.ownerid = new Owner();
emailCreate.ownerid.type = EntityName.systemuser.ToString();
emailCreate.ownerid.Value = ownerID;

//create an activityparty array holding all the guids specified in the members array list
activityparty[] ap = new activityparty[members.Count];
// creating as many activity party as the no of users or members in a team
int i = 0;
foreach (String memberID in members)
{
ap[i] = new activityparty();
ap[i].partyid = new Lookup();
ap[i].partyid.type = EntityName.contact.ToString();
ap[i].partyid.Value = new Guid(memberID);
i++;
}

// specify to part of the email
emailCreate.to = ap;

// specify the from part of the email
activityparty from = new activityparty();
from.partyid = new Lookup();
from.partyid.type = EntityName.systemuser.ToString();
from.partyid.Value = userID;
emailCreate.from = new activityparty[] { from };

// finally create the email and get the guid of the email
Guid emailId = crmService.Create(emailCreate);

// Create an SendEmailRequest object
SendEmailRequest req = new SendEmailRequest();
req.EmailId = emailId;
req.TrackingToken = string.Empty;
req.IssueSend = true;

// Finally Send the email message.
SendEmailResponse res = (SendEmailResponse)crmService.Execute(req);
}

Updating custom entities icons (Upload a new image for a Custom Entity in CRM)

For all our projects, we are always customizing Microsoft Dynamics CRM 4.0. To achieve that, we create many custom entities and one of the worst aspect of that heavy customization is to have a lot of custom entities with the same icon. So, it is difficult to identify them just with their icon.

In order to customize further the application, it is a good thing to add different icon to each custom entity.

The standard approach

This approach consists of using the standard feature of Microsoft Dynamics CRM 4.0 to update custom entites icons. In the customization view, just click on the menu “More actions” and click on “Update icons…”.

You then need to provide a file for each required icons:

*
icon in web application (16x16 / gif / less that 10kb)
*
Shortcut icon in Outlook (32x32 / ico / less than 10kb)
*
Icon in entity form (66x48 / gif / less than 10kb)

For more Details Click Here