C#C
C#•5mo ago
faint

First use of Winforms' Clipboard methods results in an ExternalException

Was debugging a Winforms app bug where the following code would fail but only if it is the first time of using any Clipboard method.
private static readonly object ClipboardLock = new object();
private static bool CopyData(IDataObject data, bool copy = true)
{
    if (data == null)
        return false;

    lock (ClipboardLock)
        Clipboard.SetDataObject(data, copy, 20, 100);

    return true;
}

When used for the first time since the app launch, it throws the following exception: System.Runtime.InteropServices.ExternalException (0x800401D0): Requested Clipboard operation did not succeed

Interestingly enough, if you just add a random Clipboard method BEFORE the SetDataObject call, everything works fine without any errors

Could someone help me to figure out what might be causing it? Thanks in advance!
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