Use Css Class in aspx/asp.net code

Question

In my project, there is css class to control the design of everything. Now I want to change dynamically the value / properties in css class if I click buttons. Can anyone solve my problem? Thanks a lot :-)

Arjunan Selvam · Answer

I think you want to change the entire style of div. For example: 1.Set the runat attribute and Id to the div so you can access it from the code behind. 2. Acess it from the code behind.Already some of them has given the syntax.just follow it.In our case,i'm changing the style of div to another class. tableContainer.Attributes.Add("class","container-new") Hope this helps.

Asp.Net Hein · Answer

I said again and again but you answer like previous one. Do you understand what I mean? If you do not want to answer, plz be silent. If not, please read my question and replies and then answer again. OK?

Raja T · Answer

Hi try like Syntax1: contrrolname.Style.Add("attrb","value") Ex : txtemail.Style.Add("position", "absolute !important");

Upendra Pratap Shahi · Answer

Use this- Syntax1: contrrolname.Style.Add( "attrb" , "value" ) Ex : txtName.Style.Add( "Background-color" , "#ccc" ); if you want to change class then use 2

Asp.Net Hein · Answer

If I use syntax 2, how to change the properties of this class... for eg. btnupload.attribue.add("class","container"); and then If I click upload , I want to change one of the properties of container.

Upendra Pratap Shahi · Answer

In code behind : Syntax1: contrrolname.Style.Add( "attrb" , "value" ) Ex : txtName.Style.Add( "Background-color" , "#ccc" ); Syntax2: contrrolname.Attributes.Add( "class" , "classname" ) Ex: txtName .Attributes.Add( "class" , "clstest" );

Amitesh Verma · Answer

textbox.attributes.add("class","cssclass");

Raja T · Answer

First you should try our answers one by one and you won't get direct answer immediately. We dont have special skills to read your mind ok.

Asp.Net Hein · Answer

All the answers are just change button positions....... I WANNA CHANGE THE POSITION IN CONTAINER CLASS !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! I HAVE THE POSITION WHICH IS FIXED, AND IF I CLICK SHOW BUTTON, I WANT TO CHANGE THE POSITION IN CONTAINER CLASS FROM FIXED TO ABSOLUTE. PLEASE READ MY REPLY AND IF SOME IDEAS, PLEASE ANSWER FOR ME. OTHERWISE, PLEASE DO NOT ANSWER. THANKS A LOT

Raja T · Answer

Hi, try like create new class .clstest_dyanic { border:1px solid red; color:cyan; position:absolute !important; } after that choose 2nd option Syntax2: contrrolname.Attributes.Add("class","classname") Ex: txtemail.Attributes.Add("class", " clstest_dyanic ");

Asp.Net Hein · Answer

BtnShow.Attributes.Add("class","container"); BtnShow.Style.Add("position", "absolute"); Like this?? It does not affect the container class... just affect the btnshow... I want to affect the container class if i click show button.

Raja T · Answer

Hi, At the time choose first option you can change like Syntax1: contrrolname.Style.Add("attrb","value") Ex : txtemail.Style.Add("Background-color", "#ccc");

Raja T · Answer

Hi, try like below, Incodebehide: Syntax1: contrrolname.Style.Add("attrb","value") Ex : txtemail.Style.Add("Background-color", "#ccc"); Syntax2: contrrolname.Attributes.Add("class","classname") Ex: txtemail.Attributes.Add("class", "clstest");

Upendra Pratap Shahi · Answer

BtnShow . Attributes [ "style" ] = "position: absolute;" ;

Use Css Class in aspx/asp.net code

Answers (14)