how to fix this error

prabhu p

10y899.NET

I am new to entity frame work

when trying to insert data to Database

iam gettin error "'System.Data.Objects.ObjectSet' does not contain a definition for 'Add' and no extension method 'Add' accepting a first argument of type 'System.Data.Objects.ObjectSet' could be found (are you missing a using directive or an assembly reference?)"

protected void Button1_Click(object sender, EventArgs e)

{

welcometestingEntities context = new welcometestingEntities();

department obj = new department();

obj._name = TextBox1.Text;

obj._location = TextBox2.Text;

context.Departements.Add(obj); //error on this line

//--- Bind data to repeater.

bindStudentInfo();

//--- Show confirmation message in label.

//--- Clear text from textboxes

}

please help me

thanks

4 Replies

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Vincent Maverick Durano10y ago
Double check the name of your object to verify if it's correct.
You are using the code context.Departements.Add(obj); //you probably have spelled it wrong
Maybe it is context.Departments.Add(obj);
ali tuncer10y ago
are you sure it is Departements?
by default, it should be departments..
context.departments.AddObject(obj);
context.SaveChanges();
prabhu p10y ago
i tried that addobject and savechanges but iam getting same error like add
ali tuncer10y ago
try this way :
context.Departements.AddObject(obj);
context.SaveChanges();