问题:
A . Add the following line of code to the TestUserControl.ascx.cs code-behind file. public string CityName { get { return "New York"; } }
B . Add the following line of code to the TestUserControl.ascx.cs code-behind file. protected readonly string CityName = "New York";
C . Add the following code segment to the TestPage.aspx.cs code-behind file. protected void Page_Load(object sender, EventArgs e) { string s = testControl.CityName; }
D . Add the following code segment to the TestPage.aspx.cs code-behind file. protected void Page_Load(object sender, EventArgs e) { string s = testControl.Attributes["CityName"]; }&e
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