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Populating RadMenu from Code Behind

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Holly
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Holly asked on 17 Aug 2015, 06:57 PM

I  am trying to dynamically populate a Telerik Radmenu control in my code behind. I'm having a really hard time with it.

I have the following code that I get a list of categories from and save to a Session Variable.

 protected void createFilter(int categoryid)
    {
        
         // check cateogyrid 
       
        //get list of proudct id
        List<int> productIds = new List<int>();
        DataRow[] productRow = CategoriesProductsData.Tables["Products"].Select("Category_ID = " + 573);

        productIds = productRow.Select(p => int.Parse(p["Product_ID"].ToString())).ToList();

        //get attributes
        ITCProductService pService = new TCProductServiceClient();
        var productTuples = (pService.GetProductsAttributes(productIds));

        List<Tuple<int, CustomAttribute>> customAttributes = new List<Tuple<int,CustomAttribute>>();
        foreach(var productTuple in productTuples)
        {
            foreach(var attributeTuple in productTuple.m_Item2)
            {
                var customAttribute = new Tuple<int, CustomAttribute>(productTuple.m_Item1, new CustomAttribute(attributeTuple));
                customAttributes.Add(customAttribute);
            }
        }

        List<CustomAttributeCategory> categories = new List<CustomAttributeCategory>();

        var categoryTuples = customAttributes.Select(a => a.Item2).Select(a => a.Attribute.Category).Distinct();
        foreach (var categoryTuple in categoryTuples)
        {
            var category = new CustomAttributeCategory(categoryTuple);
            var attributeByCategory = customAttributes.Select(a => a.Item2).Where(b => b.Attribute.CategoryId == categoryTuple.AttributeCategoryId).Distinct();
            foreach (var attributeTuple in attributeByCategory)
            {
                
                var attribute = new CustomAttribute(attributeTuple.Attribute);
                var attributeProductIds = customAttributes.Where(a => a.Item2.Attribute.AttributeId == attributeTuple.Attribute.AttributeId).Select(a => a.Item1).ToList();
                attribute.ProductIds = attributeProductIds;

                
                category.Attributes.Add(attribute);    
            }
            categories.Add(category);
        }

        Session["filter"] = categories.ToString();        
    
    }

 

 public class CustomAttributeCategory
    {
        public AttributeCategoryModel Category { get; set; }
        public List<CustomAttribute> Attributes { get; set; }

        public CustomAttributeCategory(AttributeCategoryModel category)
        {
            Category = category;
            Attributes = new List<CustomAttribute>();

        }
    }

    public class CustomAttribute
    {
        public AttributeModel Attribute { get; set; }

        public List<int> ProductIds { get; set; }

        public CustomAttribute(AttributeModel attribute)
        {
            Attribute = attribute;
            ProductIds = new List<int>();
        }
    }

 

Then I try to add the categories to the menu with this code:

 protected void handsetMenu_ItemDataBound(object sender, RadMenuEventArgs e)
    {
        var categories = Session["filter"].ToString();

        foreach (var category in categories)
        {
            var item = new RadMenuItem(categories);
            handsetMenu.Items.Add(item);
        }        
    }

 

It's not working.  I know I'm missing something from my HTML to bind the control, but I'm not even sure if the code in my code behind is working.  Here's the control:

<telerik:RadMenu ID="handsetMenu" runat="server" ShowToggleHandle="true" OnItemDataBound="handsetMenu_ItemDataBound">                    
                    <Items>
                        <telerik:RadMenuItem Text="Here">
                            <Items>
                                
                            </Items>
                        </telerik:RadMenuItem>
                    </Items>                    
                </telerik:RadMenu>

 

I am really lost if anyone could help me that'd be great.

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Holly
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answered on 17 Aug 2015, 08:16 PM

Ok, my code is bringing back the categories I need to populate my menu, but the menu doesn't populate.  My code has changed so here is my code behind:

protected void createFilter(int categoryid)
    {
        
         // check cateogyrid 
       
        //get list of proudct id
        List<int> productIds = new List<int>();
        DataRow[] productRow = CategoriesProductsData.Tables["Products"].Select("Category_ID = " + 573);

        productIds = productRow.Select(p => int.Parse(p["Product_ID"].ToString())).ToList();

        //get attributes
        ITCProductService pService = new TCProductServiceClient();
        var productTuples = (pService.GetProductsAttributes(productIds));

        List<Tuple<int, CustomAttribute>> customAttributes = new List<Tuple<int,CustomAttribute>>();
        foreach(var productTuple in productTuples)
        {
            foreach(var attributeTuple in productTuple.m_Item2)
            {
                var customAttribute = new Tuple<int, CustomAttribute>(productTuple.m_Item1, new CustomAttribute(attributeTuple));
                customAttributes.Add(customAttribute);
            }
        }

        List<CustomAttributeCategory> categories = new List<CustomAttributeCategory>();

        var categoryTuples = customAttributes.Select(a => a.Item2).Select(a => a.Attribute.Category).Distinct();
        foreach (var categoryTuple in categoryTuples)
        {
            var category = new CustomAttributeCategory(categoryTuple);
            var attributeByCategory = customAttributes.Select(a => a.Item2).Where(b => b.Attribute.CategoryId == categoryTuple.AttributeCategoryId).Distinct();
            foreach (var attributeTuple in attributeByCategory)
            {
                
                var attribute = new CustomAttribute(attributeTuple.Attribute);
                var attributeProductIds = customAttributes.Where(a => a.Item2.Attribute.AttributeId == attributeTuple.Attribute.AttributeId).Select(a => a.Item1).ToList();
                attribute.ProductIds = attributeProductIds;

                
                category.Attributes.Add(attribute);    
            }
            categories.Add(category);
        }

        foreach (var cat in categories)
        {
            var item = new RadMenuItem();
            handsetMenu.Items.Add(item);               
        }
    
    }

    public class CustomAttributeCategory
    {
        public AttributeCategoryModel Category { get; set; }
        public List<CustomAttribute> Attributes { get; set; }

        public CustomAttributeCategory(AttributeCategoryModel category)
        {
            Category = category;
            Attributes = new List<CustomAttribute>();

        }
    }

    public class CustomAttribute
    {
        public AttributeModel Attribute { get; set; }

        public List<int> ProductIds { get; set; }

        public CustomAttribute(AttributeModel attribute)
        {
            Attribute = attribute;
            ProductIds = new List<int>();
        }
    }

 

And here is my control.  I know I don't have the control set up properly.

<telerik:RadMenu ID="handsetMenu" runat="server" ShowToggleHandle="true">                  
                                       
</telerik:RadMenu>

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Holly
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answered on 17 Aug 2015, 10:45 PM

I've updated my code again.

 foreach (var cat in categories)
            {
                var itemCategory = new RadMenuItem(cat.Category.Name.ToString());
                handsetMenu.Items.Add(itemCategory);

                var itemAttribute = new RadMenuItem(cat.Attributes.ToString());
                handsetMenu.Items.Add(itemAttribute);
            }  

 

 <telerik:RadMenu ID="handsetMenu" runat="server" ShowToggleHandle="true">                                  
                </telerik:RadMenu>

 

It still does not add the items to the menu.  :(

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Holly
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