保存：

byte[] signature;

using(MemoryStream ms = newMemoryStream())

{

icSignature.Strokes.Save(ms);

signature = ms.ToArray();

}

stringsql = "INSERT INTO tblMyTable (mySigCol) VALUES (@Sig)";

SqlCommand comm = newSqlCommand(sql, conn);

comm.Parameters.AddWithValue("@Sig", signature);

comm.ExecuteNonQuery();

/////////////////////////////////////////////////////////////////////////

读取

stringsql = "SELECT TOP 1 mySigCol FROM tblMyTable";

SqlCommand comm = newSqlCommand(sql, conn);

byte[] signature = (byte[])comm.ExecuteScalar();

using(MemoryStream ms = newMemoryStream(signature))

{

icSignature.Strokes = newSystem.Windows.Ink.StrokeCollection(ms);

ms.Close();

}