100分请高手解决ASP.NET添加失败问题

private void Button1_Click(object sender, System.EventArgs e) { if(Page.IsValid) { string strconn="Data Source=ASUS-PC;Database=pms;uid=sa;pwd=;"; SqlConnection cn=new SqlConnection(strconn); string strsql="insert into personnel_information(UID,UName,UPassWord,UBirthday,UMarriage,UWorktime,UIntime,UDepartment,UPosition,UPhone)values(@UID,@UName,@UPassWord,@UBirthday,@UMarriage,@UWorktime,@UIntime,@UDepartment,@UPosition,@UPhone)"; SqlCommand cm=new SqlCommand (strsql,cn); cm.Parameters.Add(new SqlParameter("@UID",SqlDbType.VarChar,50)); cm.Parameters["@UID"].Value=Tb_name.Text; cm.Parameters.Add(new SqlParameter("@UName",SqlDbType.VarChar,50)); cm.Parameters["@UName"].Value=Tb_name.Text; cm.Parameters.Add(new SqlParameter("@UPassWord",SqlDbType.VarChar,50)); cm.Parameters["@UPassWord"].Value=Tb_password.Text; cm.Parameters.Add(new SqlParameter("@UBirthday",SqlDbType.DateTime,8)); cm.Parameters["@UBirthday"].Value=Tb_birth.Text; try { DateTime dt = Convert.ToDateTime(Tb_birth.Text); } catch { Response.Write("<script language=javascript>alert(✀您输入的不是数字，请输入正确的格式✀);</script>"); return; } cm.Parameters.Add(new SqlParameter("@UMarriage",SqlDbType.VarChar,50)); cm.Parameters["@UMarriage"].Value=Tb_name.Text; cm.Parameters.Add(new SqlParameter("@RB_marriged",SqlDbType.VarChar,50)); cm.Parameters["@RB_marriged"].Value=Tb_name.Text; if(RB_marriged.Checked) { cm.Parameters["@RB_marriged"].Value="是"; } else if(RB_unmarriged.Checked) { cm.Parameters["@UMarriage"].Value="否"; } cm.Parameters.Add(new SqlParameter("@UWorktime",SqlDbType.VarChar,50)); cm.Parameters["@UWorktime"].Value=Te_date.Text; cm.Parameters.Add(new SqlParameter("@UIntime",SqlDbType.DateTime,8)); cm.Parameters["@UIntime"].Value=Tbx_intime.Text; try { DateTime dt = Convert.ToDateTime(Tbx_intime.Text); } catch { Response.Write("<script language=javascript>alert(✀您输入的不是数字，请输入正确的格式✀);</script>"); return; } cm.Connection.Open(); try { cm.ExecuteNonQuery(); } catch(SqlException) { Response.Write("添加失败!"); } finally { cm.Connection.Close(); } } }总是显示添加失败。数据库定义为:3 UID varchar 50 00 UName varchar 50 10 UPassWord varchar 50 10 UBirthday datetime 8 10 UMarriage varchar 50 10 UWorktime varchar 50 10 UIntime datetime 8 10 UDepartment varchar 50 10 UPosition varchar 50 10 UPhone varchar 50 1