Good Day!! Thank you for the time and sincere concern to answer my question. But as a beginner and with a specific method of understanding a specific new idea "I am a learner that show me and I will understand it far more better." If it is just ok with you, could I ask for an example? I coding perhaps. :-D Please give me example: 1.How to Call WebForm using DropDownList. 2.How to Enable/Disable RadioButtonList in a certain senario. (More Details) 2.1.You are in a current WebForm (Set As Start Page) default 2.2.A certain RadioButtonList with (yes/no) choices will enable/disable a certain RadioButtonList in another WebForm that is part of the project. 2.3.Select the RadioButtonList First then click the DropDownList to go to the next page. 2.4.And when the 2nd WebForm is been Loaded some RadioButtonList is enable, some Disable. The Enable RadioButtonList is been enable because on the 1st WebForm RadioButtonList enable it. Hope I link the connection between the First Question to the Second Question. Thank you very much and God Bless to your Career!!! ;)