why this error occours ?Object reference not set to an instance of an objec
Although i m getting correct ID of both controlls.
d2 = this.Page.FindControl("ctl00$ContentPlaceHolder1$DtCal").ID.ToString();d1 = this.Page.FindControl("ctl00$ContentPlaceHolder1$useDateCal").ID.ToString();
CompareValidator validator = new CompareValidator(); validator.ID = "validation"; validator.ControlToCompare = d1; validator.ControlToValidate = d2; validator.Attributes.Add("Type", "Integer"); validator.Attributes.Add("runat","server"); validator.Attributes.Add("ErrorMessage","date2 Should be greater"); validator.Text = "date2 Should be greater"; validator.Attributes.Add("Display","Dynamic"); validator.Attributes.Add("Operator","GreaterThan"); validator.Attributes.Add("style","color:Red;visibility:hidden"); validator.Enabled = true; validator.IsValid=true; validator.EnableViewState=true; validator.Visible=true; validator.Validate();.//...Error...Object reference not set to an instance of an objec