模糊查询

  string sql = "select * from  Users where UserName like '%'+@UserName+'%' or UserID like '%'+@UserID+'%'";
            SqlParameter[] p = { new SqlParameter("@UserName", txt),
                             new SqlParameter("@UserID", txt),};
            DataTable dt = SQLHelper.ExecuteDataTable(sql, p);
            Repeater1.DataSource = dt;
            Repeater1.DataBind();