How Can One Windows Form Modify a Control on Another?

Windows Forms cross -window body control modification method

In Windows Forms applications, the window is a class of interaction. Here are some methods to modify another window control from one window:

Operation the second window from the first window:

Construct function parameters:

When creating an instance of the second window, the necessary data is passed to its constructor.

• Public attributes or methods: Create public attributes or methods in the second window, allowing access and modification from the first window.
Public control attributes:
• The controls to be operated are set to the public in the second window, allowing directly access from the first window. However, in order to better control, it is recommended to use public attributes or methods.
The first window operates from the second window:
Public attributes or methods:

Create public attributes or methods in the first window, and pass the instance of the first window to the second window.

Event: Create an event in the second window, and subscribe to it in the first window, allowing the first window to respond to the operation performed in the second window.

Injecting operation (ACTION):
• Define a public Action property in the second window, and assign an operation for it in the first window so that the first window can operate The second window. Public control attributes:
Set the control in the first window to the public, and pass the instance of the first window to the second window, allowing the second window to operate This control.
• Example: Use the constructor parameter to operate the second window from the first window
• In Form2, define a public attribute to receive the value from the first window:
• In the first window, the constructor passed the value to Form2:
In Form2, the value of the transmitted in the load event:

Remember, it is usually recommended to use public attributes or methods instead of directly disclosing control attributes.

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