you create a microsoft asp net application by using the framework..., Appendix,

Question:You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5.
You plan to add a custom parameter in the SqlDataSource control.
You write the following code fragment:
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
InsertCommand="INSERT INTO [Employee] ([Field1], [Field2], [PostedDate])
  VALUES (@Field1, @Field2, @PostedDate)">
 <InsertParameters>
  <asp:Parameter Name="Field1" />
  <asp:Parameter Name="Field2" />
  <custom:DayParameter Name="PostedDate" />
 </InsertParameters>
</asp:SqlDataSource>

You write the following code segment to create a custom parameter class:

public class DayParameter : Parameter { }

You need to ensure that the custom parameter returns the current date and time.
Which code segment should you add to the DayParameter class?

A protected DayParameter()
     : base("Value", TypeCode.DateTime, DateTime.Now.ToString()) {
} 
B protected override void LoadViewState(object savedState) {
  ((StateBag)savedState).Add("Value", DateTime.Now);
} 
C protected override object Evaluate(HttpContext context, Control control) {
 return DateTime.Now;
} 
D protected override Parameter Clone() {
 Parameter pm = new DayParameter();
 pm.DefaultValue = DateTime.Now;
 return pm;
}

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A protected DayParameter() : base("Value", TypeCode.DateTime, DateTime.Now.ToString()) {}

B protected override void LoadViewState(object savedState) { ((StateBag)savedState).Add("Value", DateTime.Now);}

C protected override object Evaluate(HttpContext context, Control control) { return DateTime.Now;}

D protected override Parameter Clone() { Parameter pm = new DayParameter(); pm.DefaultValue = DateTime.Now; return pm;}

C

A protected DayParameter()
: base("Value", TypeCode.DateTime, DateTime.Now.ToString()) {
}

B protected override void LoadViewState(object savedState) {
((StateBag)savedState).Add("Value", DateTime.Now);
}

C protected override object Evaluate(HttpContext context, Control control) {
return DateTime.Now;
}

D protected override Parameter Clone() {
Parameter pm = new DayParameter();
pm.DefaultValue = DateTime.Now;
return pm;
}