Qaiser Mehmood

Qaiser Mehmood

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comparevalidator+ error

Feb 18 2009 9:21 AM

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