comboBox的数据绑定

Question

 private void btnRefresh_Click(object sender, EventArgs e)
        {
            
            DataSet da = (DataSet)_bindingSource.DataSource;
            DataRow row =  da.Tables[DataTableNames.PersonTable].NewRow();
            row["PersonId"] = Guid.NewGuid();
            row["PersonNo"] = "A92";
            row["Name"] = "halo";
            row["Sex"] = true;
            da.Tables[DataTableNames.PersonTable].Rows.Add(row);
            Binding();
        } private void Binding()
        {
            //txtPersonNo.DataBindings.Clear();
            //txtName.DataBindings.Clear();
            //txtNickName.DataBindings.Clear();
            //txtIdentityId.DataBindings.Clear();
            //txtMobilePhone.DataBindings.Clear();
            //txtBirthdate.DataBindings.Clear();
            //txtRe.DataBindings.Clear();
            //DataBindings.Clear();            txtPersonNo.DataBindings.Add("Text", _bindingSource, "PersonNo");
            txtName.DataBindings.Add("Text", _bindingSource, "Name");
            txtNickName.DataBindings.Add("Text", _bindingSource, "NickName");
            txtIdentityId.DataBindings.Add("Text", _bindingSource, "IdentityId");
            txtMobilePhone.DataBindings.Add("Text", _bindingSource, "MobilePhone");
            txtBirthdate.DataBindings.Add("Text", _bindingSource, "Birthdate", true, DataSourceUpdateMode.OnValidation, string.Empty, "D");
            txtRe.DataBindings.Add("Text", _bindingSource, "Re");            BindingSource bs = new BindingSource(_bindingSource,"Sex");
           // Binding sexBinding = new Binding("SelectedIndex", _bindingSource, "Sex");
            cboSex.Format +=new ListControlConvertEventHandler(cboSex_Format);
           // cboSex.Format += new ListControlConvertEventHandler(cboSex_Format);            cboSex.DataBindings.Add("SelectedValue",bs, "Sex");
            //Binding sexBinding = new Binding(cboSex,"SelectedIndex", _bindingSource, "Sex");        }        private void cboSex_Format(object sender, ListControlConvertEventArgs e)
        {
           // MessageBox.Show(e.Value.ToString());
            if(e.DesiredType == typeof(int))
            {
                if (e.Value == DBNull.Value)
                    e.Value = 0;
                else 
                {
                    if ((bool)e.Value == true)
                        e.Value = 1;
                    else
                        e.Value = 2;
                }
            }
        }
红色的地方报错....无法绑定到 DataSource 的属性或列 Sex。
参数名: dataMember求高手解答下 thank you ..

Answer 1

ComboBox1先绑定数据
ComboBox1.DataBindings.Add("Text", ds, "Sex")
ComboBox1.DataBindings.Add("SelectedValue", bindingSource1, "Group");