How to test dropdownlist is null or not

Question

Hi Guys How write code in select when the dropdownlist is null  i need to test dropdownlist in null or not Thanks

Rajkiran Swain · Answer

You can try like this. if ( ddlFleetNo . SelectedItem . ToString () == null ) { }

Nitin Sontakke · Answer

@Abdalla Instead of disclosing part of the question one after another why not state everything at the beginning itself? Much easier for everybody involved isn't it? Please read this article carefully: http://www.c-sharpcorner.com/article/why-wont-you-answer-my-question/

Ramesh Palanivel · Answer

Hi Abdalla maintain the selected Fleet No value in Session variable and restore it once the form has been posted. Refer the link http://stackoverflow.com/questions/17463937/restore-a-drop-down-selected-item-after-postback

Abdalla Elawad · Answer

like below case

Abdalla Elawad · Answer

Hello Guys Please See To Below Form : I searh by Fleet No. Business Unit & Region & City are Control ID of Fleet No. Sometimes Fleet No. is empty how write code in postback of conrols IDs or any other solution Dropdownlist is Empty

Srikanth Reddy · Answer

@Abdalla Elawad int totalItems = DropDownList1.Items.Count; If( totalItems==0) { //Items in dropdownlist are null(like no items) } Is this not working ?

Srikanth Reddy · Answer

int totalItems = DropDownList1.Items.Count; If( totalItems==0) { //Items in dropdownlist are null(like no items) }

Nitin Sontakke · Answer

You can use dropdownlist.Items.Count property. It will be zero when empty. https://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.listitemcollection(v=vs.110).aspx

Ramesh Palanivel · Answer

Hi Abdalla Do u want to check whether the drop-down list has null value or its empty value? Kindly share some screen shot of Ur drop down list.

Abdalla Elawad · Answer

Yes Ramesh Palanivel USING ASP.NET C# WEBFORM

Ramesh Palanivel · Answer

Hi Abdalla R u using ASP. Net or asp mvc application...

Abdalla Elawad · Answer

I mean if the dropdownlist is empty exactly .