CRM Plugin get Title of a page in C#

Question

I am creating a Plugin for CRM Which sets the Title of the page as First Name for Account Entity.

The desired result I have achieved the same by writing a javascript function on formload Event in CRM.

Following is the code

var titlename = Xrm.Page.data.entity.attributes.get("firstname").getValue();  
    var titleSpan = document.getElementById('form_title_div');  
     if(titleSpan) {  
        for(var i = 0;i < titleSpan.children.length;i++) {  
               if(titleSpan.children[i].className == 'ms-crm-Form-Title-Data autoellipsis') {  
                titleSpan.children[i].innerText = titlename;  
                 }  
          }  
     }

But my client don't want any javascript code instead he wants it thru Plugin .

I have written a plugin but don't know how to get and set the Title of the page.

Plugin project is a C# Class library .

Code is below for Plugin

Basically I want C# code for commented(Javascipt) Lines

using (var crm = new XrmServiceContext(service))  
{  
                var account = crm.ContactSet.Where(c => c.AccountId == id).First();  
                var titlename = contact.Crmp_Firstname.ToString();  
                //var titleSpan = document.getElementById('form_title_div');  
                //if(titleSpan) {  
                    //for(var i = 0;i < titleSpan.children.length;i++) {  
                        //if(titleSpan.children[i].className == 'ms-crm-Form-Title-Data autoellipsis') {  
                            //titleSpan.children[i].innerText = titlename;  
               //}  
          //}  
     //}  
}

Thanks in advance for any help

Answer 1

It is not possible to modify the title of an account form by a plugin. This because plugins act server side, instead JavaScript (and your account form) is executed client side. CRM doesn't store the title of the account, but generates it at runtime.