Random String Generator Function Public string RandomString() { StringBuilder objSB = new StringBuilder (); Random objRandom = new Random (); char ch; for ( int i = 0; i < 4; i++) { ch = Convert .ToChar( Convert .ToInt32( Math .Floor(26 * objRandom.NextDouble() + 65))); int x = objRandom.Next(1, 4); if (x == i) ch = Convert .ToChar(ch.ToString().ToUpper()); else ch = Convert .ToChar(ch.ToString().ToLower()); objSB.Append(ch); } return objSB.ToString(); }
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