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

Sreekanth Reddy · Answer

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

Sreekanth 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 .