How Do I Copy Data to the System Clipboard in C#?

Copying Data to the System Clipboard in C#

In C#, accessing the system clipboard requires selecting the appropriate namespace based on the application type and ensuring the Main function (if applicable) is attributed with [STAThread]. Here's a breakdown:

• WinForms: Use the System.Windows.Forms namespace and add the [STAThread] attribute to Main.
• WPF: Utilize the System.Windows namespace.
• Console: Include a reference to System.Windows.Forms, use the System.Windows.Forms namespace, and add the [STAThread] attribute to Main.

To copy a literal string to the clipboard:

Clipboard.SetText("Hello, clipboard");

For copying the contents of a textbox, either use TextBox.Copy() or:

Clipboard.SetText(txtClipboard.Text);

Note that the clipboard is a desktop UI concept, so accessing it from server-side code (e.g., ASP.Net) will only affect values on the server and not impact the user's browser.

Additionally, ensure that the current thread is set to a single thread apartment (STA) to avoid exceptions related to Clipboard access.

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