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1.You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5.
You create a composite custom control named MyControl.
You need to add an instance of the OrderFormData control to the MyControl control.
Which code segment should you use?
A.protected override void CreateChildControls() {
Controls.Clear();
OrderFormData oFData = new OrderFormData("OrderForm");
Controls.Add(oFData);
}
Bprotected override void RenderContents(HtmlTextWriter writer) {
OrderFormData oFData = new OrderFormData("OrderForm");
oFData.RenderControl(writer);
}
Cprotected override void EnsureChildControls() {
Controls.Clear();
OrderFormData oFData = new OrderFormData("OrderForm");
oFData.EnsureChildControls();
if (!ChildControlsCreated) CreateChildControls();
}
Dprotected override ControlCollection CreateControlCollection() {
ControlCollection controls = new ControlCollection(this);
OrderFormData oFData = new OrderFormData("OrderForm");
controls.Add(oFData);
return controls;
}
答案：A
2.You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5.
You create a Web form in the application by using the following code fragment. (Line numbers are included for reference only.)
01
02 protected void Button_Handler(object sender, EventArgs e)
03 {
04 // some long-processing operation.
05 }
06
07
08 < p>
09 runat="server" />
10
11 < p>
12 UpdateMode="Conditional" runat="server">
13
14
15 < p>
16 Text="Submit" OnClick="Button_Handler" />
17
18
19
You plan to create a client-side script code by using ASP.NET AJAX.
You need to ensure that while a request is being processed, any subsequent Click events on the btnSubmit Button control are suppressed.
Which code fragment should you insert at line 10?
A.
var rm = Sys.WebForms.PageRequestManager.getInstance();
rm.add_beginRequest(checkPostback);
function checkPostback(sender, args) {
if (rm.get_isInAsyncPostBack() && args.get_postBackElement().id == ’btnSubmit’) {
rm.abortPostBack(); alert(’A previous request is still in progress.’);
}
}
B. var rm = Sys.WebForms.PageRequestManager.getInstance();
rm.add_initializeRequest(checkPostback);
function checkPostback(sender, args) {
if (rm.get_isInAsyncPostBack() && args.get_postBackElement().id == ’btnSubmit’) {
rm.abortPostBack();
alert(’A previous request is still in progress.’);
}
}
C. var rm = Sys.WebForms.PageRequestManager.getInstance();
rm.add_initializeRequest(checkPostback);
function checkPostback(sender, args) {
if (rm.get_isInAsyncPostBack() && args.get_postBackElement().id == ’btnSubmit’) {
args.set_cancel(true);
alert(’A previous request is still in progress.’);
}
}
D. var rm = Sys.WebForms.PageRequestManager.getInstance();
rm.add_beginRequest(checkPostback);
function checkPostback(sender, args) {
var request = args.get_request();
if (rm.get_isInAsyncPostBack() && args.get_postBackElement().id == ’btnSubmit’) {
request.completed(new Sys.CancelEventArgs());
alert(’A previous request is still in progress.’);
}
}
答案: C
3.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.
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; }
答案: C
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