In Asp.net check at least one checkbox is selected in CheckBoxList using Javascript

function Validate_Checkbox() { // GET CHECKBOXLIST OBJECT var chks= document.getElementById(''); var chkListinputs = chks.getElementsByTagName("input"); var hasChecked = false; for (var i = 0; i < chkListinputs.length; i++) { if (chkListinputs[i].checked) { hasChecked = true; break; } } if (hasChecked == false) { alert("Please select at least one Plan!"); return false; } return true; } //Calling…Read more In Asp.net check at least one checkbox is selected in CheckBoxList using Javascript

Immediate Button Disable On Click – ASP.net/Javascript

note :immediate button Disable when click on button ..after your process complete button enable. protected void Page_Load( object sender, EventArgs e) { btnname.Attributes.Add("onclick", @" this.value=""Processing..."" ;this.disabled = true; " + this.Page.ClientScript.GetPostBackEventReference(btnname, null) + ";"); } protected void btnname_Click( object sender, EventArgs e) { //cause delay System.Threading.Thread.Sleep(3000); }