if ( Clipboard . ContainsText( TextDataFormat . Html))
{
MemoryStream vMemoryStream =
Clipboard . GetData( "Html Format" ) as MemoryStream ;
vMemoryStream . Position = 0 ;
byte [] vBytes = new byte [vMemoryStream . Length];
vMemoryStream . Read(vBytes, 0 , ( int )vMemoryStream . Length);
textBox1 . Text = Encoding . UTF8 . GetString(vBytes);
}