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SOLVED
10 replies

Method Void Error on Custom object

Hey everyone, Im fairly  new to APEX and need some guidance through this simple error. The error i receive is the Method void DeleteContact() is referenced by VisualForce page(cls) in salesforce.com. Remove the usage and try again.
This is pointing to the void DeleteInventory in the controller, so I am not sure what this error is exactly pointing.

cls page
<apex:page controller="clsController" sidebar="true" showheader="false" showChat="true" >

<html>
  <head>
    <title></title>
        <link href="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.2.2/css/bootstrap-combined.min.css" rel="stylesheet" 

media="screen"/>    

   <style>
      body {
        padding-top: 60px;
         }
     
    </style>
  </head>
  <body>
       <script src="http://code.jquery.com/jquery-latest.js"></script>
       <script src="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.2.2/js/bootstrap.min.js"></script>
    <div class="navbar navbar-inverse navbar-fixed-top">
      <div class="navbar-inner">
        <div class="container">
          <a class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
          </a>
          <a class="brand" href="#">Computer Inventory</a>
          <div class="nav-collapse collapse">
            <ul class="nav">
              <li class="active"><a href="#">Home</a></li>
              <li><a href="#about">About</a></li>
              <li><a href="#else">Contact</a></li>
            </ul>
          </div>        
          </div>
      </div>
    </div>

    <div class="container">



 <apex:form id="form">
<apex:image value="{!$Resource.LogoAbel}" width="30%" />
  <apex:pageBlock title="Computer Inventory">
  <apex:pageMessages >
</apex:pageMessages>
  <apex:pageBlockButtons >
          <apex:commandButton action="{!save}" value="Save"/>
  </apex:pageBlockButtons>
 <apex:pageBlock >
     <apex:panelgrid columns="2">
     <apex:selectList value="{!selectedField }" size="1">
     <apex:selectOption itemValue="Employee_Name__c" itemLabel="EmployeeName"/>
     <apex:selectOption itemValue="ASI_Solutions_Inventory_Number__c" itemLabel="ASI Solutions Inventory Number"/>
     <apex:selectOption itemValue="Location__c" itemLabel="Location"/>
     <apex:selectOption itemValue="Make__c" itemLabel="Make"/>
     <apex:selectOption itemValue="Model__c" itemLabel="Model"/>
     <apex:selectOption itemValue="Purchase_Date__c" itemLabel="Purchase Date"/>
     <apex:selectOption itemValue="Serial_Number__c" itemLabel="Serial Number"/>
     <apex:selectOption itemValue="Warranty__c" itemLabel="Warranty"/>
     <apex:selectOption itemValue="Vendor__c" itemLabel="Vendor"/>    
     </apex:selectList>
    <apex:commandButton value="Click Here to Sort" action="{!sortMethod}" reRender="pgblcktbl"/>
   </apex:panelgrid>
  </apex:pageBlock>
  <apex:pageBlock >
  
   <apex:pageblocktable value="{!inventories}" var="rec" id="pgblcktbl" >
  
   <apex:column >       
<apex:outputLink title="" value="/{!rec.id}/e?retURL=/apex/{!$CurrentPage.Name}" style="font-weight:bold">Edit</apex:outputLink>&nbsp;|&nbsp;       
<a href="javascript:if (window.confirm('Are you sure?')) DeleteInventory('{!rec.Id}');" style="font-weight:bold">Del</a>     
</apex:column> 
   
     <apex:column value="{!rec.Employee_Name__c}"/>
     <apex:column value="{!rec.ASI_Solutions_Inventory_Number__c}"/>
      <apex:column value="{!rec.Location__c}"/>
       <apex:column value="{!rec.Make__c}"/>
       <apex:column value="{!rec.Model__c}"/>
        <apex:column value="{!rec.Purchase_Date__c}"/>
        <apex:column value="{!rec.Serial_Number__c}"/>
        <apex:column value="{!rec.Warranty__c}"/>
        <apex:column headerValue="Vendor">
          <apex:inputField value="{!rec.Vendor__c}"/>
        </apex:column>   
  </apex:pageblocktable>
   
  
  </apex:pageBlock>
    
  </apex:pageBlock>
     <apex:actionFunction action="{!DeleteInventory}" name="DeleteInventory" reRender="form" >   
<apex:param name="inventoriesid" value="" assignTo="{!selectedField}"/>
</apex:actionFunction>
 
 </apex:form>
     </div> 
      </body>
</html>
</apex:page>



here is the controller
public with sharing class clsController 
{

    public List<Inventory__c> inventories {get;set;}
    public List<Inventory__c> con {get; set;}
    public string selectedField {get;set;}
    public clsController()
    {
    LoadData();
    }
       
    public void LoadData()
    { 
    
         inventories = [select Employee_Name__c, ASI_Solutions_Inventory_Number__c, Make__c, Model__c, Purchase_Date__c, Serial_Number__c,
        Vendor__c, Warranty__c, Location__c from inventory__c Limit 10];
     } 
    
   public void DeleteInventory()   {      
    
    if (SelectedField == null) 
    {      
    return;     
     }        
 Inventory__c tobeDeleted = null;     
  for(Inventory__c a: inventories)        
         if (a.Id == SelectedField) 
         {          
         tobeDeleted = a;  break;       
         }         
         
if (tobeDeleted != null) {      
 Delete tobeDeleted;      }          
         
         LoadData();   }       
          
            
  public void sortMethod()
  {
  if (selectedField =='Employee_Name__c')
  inventories = [select Employee_Name__c, ASI_Solutions_Inventory_Number__c, Make__c, Model__c, Purchase_Date__c, Serial_Number__c,
        Vendor__c, Warranty__c, Location__c from inventory__c where id IN:inventories order by Employee_Name__c Limit 10];
        
  else if(selectedField == 'ASI_Solutions_Inventory_Number__c') 
     inventories = [select Employee_Name__c, ASI_Solutions_Inventory_Number__c, Make__c, Model__c, Purchase_Date__c, Serial_Number__c,
        Vendor__c, Warranty__c, Location__c from inventory__c where id IN:inventories order by ASI_Solutions_Inventory_Number__c Limit 10];
        
 else if(selectedField ==  'Make__c') 
     inventories = [select Employee_Name__c, ASI_Solutions_Inventory_Number__c, Make__c, Model__c, Purchase_Date__c, Serial_Number__c,
        Vendor__c, Warranty__c, Location__c from inventory__c where id IN:inventories order by  Make__c Limit 10];
        
else if(selectedField == 'Model__c')
     inventories = [select Employee_Name__c, ASI_Solutions_Inventory_Number__c, Make__c, Model__c, Purchase_Date__c, Serial_Number__c,
        Vendor__c, Warranty__c, Location__c from inventory__c where id IN:inventories order by Model__c Limit 10];
        
else if(selectedField == 'Purchase_Date__c') 
     inventories = [select Employee_Name__c, ASI_Solutions_Inventory_Number__c, Make__c, Model__c, Purchase_Date__c, Serial_Number__c,
        Vendor__c, Warranty__c, Location__c from inventory__c where id IN:inventories order by Purchase_Date__c Limit 10];
        
else if(selectedField == 'Serial_Number__c') 
     inventories = [select Employee_Name__c, ASI_Solutions_Inventory_Number__c, Make__c, Model__c, Purchase_Date__c, Serial_Number__c,
        Vendor__c, Warranty__c, Location__c from inventory__c where id IN:inventories order by Serial_Number__c Limit 10];
       
else if(selectedField == 'Vendor__c') 
     inventories = [select Employee_Name__c, ASI_Solutions_Inventory_Number__c, Make__c, Model__c, Purchase_Date__c, Serial_Number__c,
        Vendor__c, Warranty__c, Location__c from inventory__c where id IN:inventories order by  Vendor__c Limit 10];
        
else if(selectedField == 'Warranty__c') 
     inventories = [select Employee_Name__c, ASI_Solutions_Inventory_Number__c, Make__c, Model__c, Purchase_Date__c, Serial_Number__c,
        Vendor__c, Warranty__c, Location__c from inventory__c where id IN:inventories order by Warranty__c Limit 10];
        
else if(selectedField ==  'Location__c') 
     inventories = [select Employee_Name__c, ASI_Solutions_Inventory_Number__c, Make__c, Model__c, Purchase_Date__c, Serial_Number__c,
        Vendor__c, Warranty__c, Location__c from inventory__c where id IN:inventories order by Location__c Limit 10];
  
  }
   
  public void save()
    {
    update inventories;
    }
    

}
thank you for any help

SOLVED
10 replies

Method Void Error on Custom object

Hey everyone, Im fairly  new to APEX and need some guidance through this simple error. The error i receive is the Method void DeleteContact() is referenced by VisualForce page(cls) in salesforce.com. Remove the usage and try again.
This is pointing to the void DeleteInventory in the controller, so I am not sure what this error is exactly pointing.

cls page
<apex:page controller="clsController" sidebar="true" showheader="false" showChat="true" >

<html>
  <head>
    <title></title>
        <link href="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.2.2/css/bootstrap-combined.min.css" rel="stylesheet" 

media="screen"/>    

   <style>
      body {
        padding-top: 60px;
         }
     
    </style>
  </head>
  <body>
       <script src="http://code.jquery.com/jquery-latest.js"></script>
       <script src="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.2.2/js/bootstrap.min.js"></script>
    <div class="navbar navbar-inverse navbar-fixed-top">
      <div class="navbar-inner">
        <div class="container">
          <a class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
          </a>
          <a class="brand" href="#">Computer Inventory</a>
          <div class="nav-collapse collapse">
            <ul class="nav">
              <li class="active"><a href="#">Home</a></li>
              <li><a href="#about">About</a></li>
              <li><a href="#else">Contact</a></li>
            </ul>
          </div>        
          </div>
      </div>
    </div>

    <div class="container">



 <apex:form id="form">
<apex:image value="{!$Resource.LogoAbel}" width="30%" />
  <apex:pageBlock title="Computer Inventory">
  <apex:pageMessages >
</apex:pageMessages>
  <apex:pageBlockButtons >
          <apex:commandButton action="{!save}" value="Save"/>
  </apex:pageBlockButtons>
 <apex:pageBlock >
     <apex:panelgrid columns="2">
     <apex:selectList value="{!selectedField }" size="1">
     <apex:selectOption itemValue="Employee_Name__c" itemLabel="EmployeeName"/>
     <apex:selectOption itemValue="ASI_Solutions_Inventory_Number__c" itemLabel="ASI Solutions Inventory Number"/>
     <apex:selectOption itemValue="Location__c" itemLabel="Location"/>
     <apex:selectOption itemValue="Make__c" itemLabel="Make"/>
     <apex:selectOption itemValue="Model__c" itemLabel="Model"/>
     <apex:selectOption itemValue="Purchase_Date__c" itemLabel="Purchase Date"/>
     <apex:selectOption itemValue="Serial_Number__c" itemLabel="Serial Number"/>
     <apex:selectOption itemValue="Warranty__c" itemLabel="Warranty"/>
     <apex:selectOption itemValue="Vendor__c" itemLabel="Vendor"/>    
     </apex:selectList>
    <apex:commandButton value="Click Here to Sort" action="{!sortMethod}" reRender="pgblcktbl"/>
   </apex:panelgrid>
  </apex:pageBlock>
  <apex:pageBlock >
  
   <apex:pageblocktable value="{!inventories}" var="rec" id="pgblcktbl" >
  
   <apex:column >       
<apex:outputLink title="" value="/{!rec.id}/e?retURL=/apex/{!$CurrentPage.Name}" style="font-weight:bold">Edit</apex:outputLink>&nbsp;|&nbsp;       
<a href="javascript:if (window.confirm('Are you sure?')) DeleteInventory('{!rec.Id}');" style="font-weight:bold">Del</a>     
</apex:column> 
   
     <apex:column value="{!rec.Employee_Name__c}"/>
     <apex:column value="{!rec.ASI_Solutions_Inventory_Number__c}"/>
      <apex:column value="{!rec.Location__c}"/>
       <apex:column value="{!rec.Make__c}"/>
       <apex:column value="{!rec.Model__c}"/>
        <apex:column value="{!rec.Purchase_Date__c}"/>
        <apex:column value="{!rec.Serial_Number__c}"/>
        <apex:column value="{!rec.Warranty__c}"/>
        <apex:column headerValue="Vendor">
          <apex:inputField value="{!rec.Vendor__c}"/>
        </apex:column>   
  </apex:pageblocktable>
   
  
  </apex:pageBlock>
    
  </apex:pageBlock>
     <apex:actionFunction action="{!DeleteInventory}" name="DeleteInventory" reRender="form" >   
<apex:param name="inventoriesid" value="" assignTo="{!selectedField}"/>
</apex:actionFunction>
 
 </apex:form>
     </div> 
      </body>
</html>
</apex:page>



here is the controller
public with sharing class clsController 
{

    public List<Inventory__c> inventories {get;set;}
    public List<Inventory__c> con {get; set;}
    public string selectedField {get;set;}
    public clsController()
    {
    LoadData();
    }
       
    public void LoadData()
    { 
    
         inventories = [select Employee_Name__c, ASI_Solutions_Inventory_Number__c, Make__c, Model__c, Purchase_Date__c, Serial_Number__c,
        Vendor__c, Warranty__c, Location__c from inventory__c Limit 10];
     } 
    
   public void DeleteInventory()   {      
    
    if (SelectedField == null) 
    {      
    return;     
     }        
 Inventory__c tobeDeleted = null;     
  for(Inventory__c a: inventories)        
         if (a.Id == SelectedField) 
         {          
         tobeDeleted = a;  break;       
         }         
         
if (tobeDeleted != null) {      
 Delete tobeDeleted;      }          
         
         LoadData();   }       
          
            
  public void sortMethod()
  {
  if (selectedField =='Employee_Name__c')
  inventories = [select Employee_Name__c, ASI_Solutions_Inventory_Number__c, Make__c, Model__c, Purchase_Date__c, Serial_Number__c,
        Vendor__c, Warranty__c, Location__c from inventory__c where id IN:inventories order by Employee_Name__c Limit 10];
        
  else if(selectedField == 'ASI_Solutions_Inventory_Number__c') 
     inventories = [select Employee_Name__c, ASI_Solutions_Inventory_Number__c, Make__c, Model__c, Purchase_Date__c, Serial_Number__c,
        Vendor__c, Warranty__c, Location__c from inventory__c where id IN:inventories order by ASI_Solutions_Inventory_Number__c Limit 10];
        
 else if(selectedField ==  'Make__c') 
     inventories = [select Employee_Name__c, ASI_Solutions_Inventory_Number__c, Make__c, Model__c, Purchase_Date__c, Serial_Number__c,
        Vendor__c, Warranty__c, Location__c from inventory__c where id IN:inventories order by  Make__c Limit 10];
        
else if(selectedField == 'Model__c')
     inventories = [select Employee_Name__c, ASI_Solutions_Inventory_Number__c, Make__c, Model__c, Purchase_Date__c, Serial_Number__c,
        Vendor__c, Warranty__c, Location__c from inventory__c where id IN:inventories order by Model__c Limit 10];
        
else if(selectedField == 'Purchase_Date__c') 
     inventories = [select Employee_Name__c, ASI_Solutions_Inventory_Number__c, Make__c, Model__c, Purchase_Date__c, Serial_Number__c,
        Vendor__c, Warranty__c, Location__c from inventory__c where id IN:inventories order by Purchase_Date__c Limit 10];
        
else if(selectedField == 'Serial_Number__c') 
     inventories = [select Employee_Name__c, ASI_Solutions_Inventory_Number__c, Make__c, Model__c, Purchase_Date__c, Serial_Number__c,
        Vendor__c, Warranty__c, Location__c from inventory__c where id IN:inventories order by Serial_Number__c Limit 10];
       
else if(selectedField == 'Vendor__c') 
     inventories = [select Employee_Name__c, ASI_Solutions_Inventory_Number__c, Make__c, Model__c, Purchase_Date__c, Serial_Number__c,
        Vendor__c, Warranty__c, Location__c from inventory__c where id IN:inventories order by  Vendor__c Limit 10];
        
else if(selectedField == 'Warranty__c') 
     inventories = [select Employee_Name__c, ASI_Solutions_Inventory_Number__c, Make__c, Model__c, Purchase_Date__c, Serial_Number__c,
        Vendor__c, Warranty__c, Location__c from inventory__c where id IN:inventories order by Warranty__c Limit 10];
        
else if(selectedField ==  'Location__c') 
     inventories = [select Employee_Name__c, ASI_Solutions_Inventory_Number__c, Make__c, Model__c, Purchase_Date__c, Serial_Number__c,
        Vendor__c, Warranty__c, Location__c from inventory__c where id IN:inventories order by Location__c Limit 10];
  
  }
   
  public void save()
    {
    update inventories;
    }
    

}
thank you for any help