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string cnnstr = "";
OleDbConnection con = new OleDbConnection(cnnstr);
con.Open();
OleDbCommand cmd = new OleDbCommand(cnnstr,con);
cmd.CommandType=CommandType.Text;
byte[] b= System.Text.Encoding.Unicode.GetBytes("");
cmd.CommandText = " insert into Tb( a) values (:a) ";
cmd.Parameters.Add("a",System.Data.OleDb.OleDbType.Binary,b.Length);
cmd.Parameters [0].Value = b;
try
{
cmd.ExecuteNonQuery();
}
catch ( System.Exception e1 )
{
}
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