Error in sending message after saving document

Thanks Mohamed. If I applied it right, it gives these mistakes.

Hi

, you can use the MessageBox asynchronously using async/await

using Word = Microsoft.Office.Interop.Word;

// ...

async Task SaveAndShowMessageAsync()
{
    var oWord = new Word.Application();
    var oWordDoc = oWord.Documents.Add();

    // Fill the document here

    // Save the document asynchronously
    await Task.Run(() =>
    {
        oWord.ActiveDocument.SaveAs2(@"C:\Users\Fatih\Desktop\\Sözlesme Metni.docx");
    });

    // Release COM objects
    System.Runtime.InteropServices.Marshal.ReleaseComObject(oWordDoc);
    System.Runtime.InteropServices.Marshal.ReleaseComObject(oWord);
    oWordDoc = null;
    oWord = null;

    // Show the message box after saving is completed
    MessageBox.Show("Belge 'Sozlesmemetni' adiyla masaüstüne kaydedildi.");
}