listboxfor in mvc

Question

i am using listboxfor in mvc.........at the edit time i display selected values in label i need to display remaining values(not selected values) in a listboxfor but this time listbox showing all value..........how to do it in mvc

Laxmidhar Sahoo · Answer

var x = (from c in db.addcatalouge where c.id == id select c).FirstOrDefault(); The above code return a single row so string strdealer = x.delid; the above code will hohd a single value the below code for multiple string[] strvalues = strdealer.Split(new[] { ',' }); //here no , will be foun di think foreach (var item in strvalues) { so that should be if (strdealer != null) { var item = strdealer; int idvalue = Convert.ToInt32(item);

Indu Yadav · Answer

else if (cmd == "ed") { MyDbcontext db = new MyDbcontext(); var x = (from c in db.addcatalouge where c.id == id select c).FirstOrDefault(); nameobj.id = x.id; nameobj.catid = x.catid; string strdealer = x.delid; StringBuilder strobj = new StringBuilder(); if (strdealer != null) { string[] strvalues = strdealer.Split(new[] { ',' }); foreach (var item in strvalues) { if (item != "" && item != null) { int idvalue = Convert.ToInt32(item); var dealerobj = (from c in objDbContext.dealer where c.id ==idvalue select c.name).FirstOrDefault(); var newobj = dealerobj; strobj.Append(" ").Append(dealerobj).Append(" "); } } } ViewBag.selectedvalues = strobj; view code::: @Html.ListBoxFor(model => model.dealernamelist, new SelectList(Model.dealerlist, "id", "name"), new {value=Model.delid,@class = "eligibleCategoryListBox", name = "dealerlist", id = "id", @multiple = "multiple" }) @Html.Raw(ViewBag.selectedvalues)

Laxmidhar Sahoo · Answer

sir Listbox items display according to your query .so please display query. so that can better visualised

listboxfor in mvc

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