双击一个名为btnCom的按钮，自动生成的鼠标点击事件处理方法为：
A: private void btnCom_Click(object sender, EventArgs e){ }
B: public void btnCom_Click(object sender, EventArgs e){ }
C: private void btnCom(object sender, EventArgs e){ }
D: public void btnCom(object sender, EventArgs e){ }
A: private void btnCom_Click(object sender, EventArgs e){ }
B: public void btnCom_Click(object sender, EventArgs e){ }
C: private void btnCom(object sender, EventArgs e){ }
D: public void btnCom(object sender, EventArgs e){ }
举一反三
- .NET框架提供有专门的委托类EventHandler，原型如下： A: public delegate void EventHandler(object sender, EventArgs e); B: public delegate void EventHandler(EventArgs e, object sender); C: public event void EventDelegate(object sender, EventArgs e); D: public event void EventDelegate(EventArgs e, object sender);
- public partial class MasterPage : System.Web.UI.MasterPage { protected void Page_Load(object sender, EventArgs e) { __________.Text = "欢迎您！"; } } public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } protected void Button1_Click(object sender, EventArgs e) { Label labelname = (Label)__________.__________("Label1"); __________.Text = "欢迎" + TextBox1.Text + "！"; } }
- 智慧职教: 阅读下面的程序，按照注释中的要求编写代码。 代码一： public partial class FormTest01 : Form { public FormTest01() { InitializeComponent()； } private void FormTest01_Load(object sender, EventArgs e) { //窗体加载时btnSecond按钮在窗体上消失 _______________________________ } private void btnFirst_Click(object sender, EventArgs e) { //单击btnFirst按钮时btnSecond按钮显示，btnFirst按钮消失 _______________________________ } private void btnSecond_Click(object sender, EventArgs e) { //单击btnSecond按钮时btnSecond按钮消失，btnFirst按钮显示 _______________________________ } }
- protected void Page_Load(object sender, EventArgs e) { if (Request.Cookies["password"] != __________) this.TextBox2.Attributes.Add("value", Request["password"]); } protected void Button1_Click(object sender, EventArgs e) { if (CheckBox1.__________) { Response.Cookies["password"]. __________= TextBox2.Text; Response.Cookies["password"]. __________= DateTime.Now.AddSeconds(20); } }
- 如已有一个委托声明为：public delegate int myCallBack(Object sender，EventArgs e);则用该委托可以调用下面哪个方法（ ） A: int receive(Object sender，EventArgs e) {……} B: void myCallBack(Object sender，EventArgs e){……} C: string receive(int x) {……} D: int myCallBack(int x，int y){……}