C # Personnel Management system first day. NET difficulty enhancement and XAML Foundation

Sender: Represents this control

Button btn1= (button) sender;//get this control

Btn1. text= "Button control displays the name";

Collection class:

List<int> list1=new list<int>;

List1. ADD (11);

List1. ADD (22); Add the number 22 to the collection List1

Similar to arrays, but stored in a linked list, less efficient than arrays

Advantages: Variable length

Array:

Int[] A1=new int[2];

a1[0]=11;

a1[1]=22;

Collection Class Other properties: Remove Remove, count statistic length

MessageBox.Show (List1.count.ToString ());

List1.remove (11);

XAML file:

Describes the interface layout. Adding properties to XAML files: Automatically display the list of properties Ctrl+j

Text Box control properties: Show and Hide

The value of visibility is an enumeration type: visible collapsed not visible

txtbox1.visibility=system.windows.visibility.collapsed;

C # Personnel Management system first day. NET difficulty enhancement and XAML Foundation