C# [winform] combobox数据绑定，显示一个值，隐藏一个值

DataTable dt = new DataTable();
dt.TableName = "dt";
dt.Columns.Add("Code");
dt.Columns.Add("Name");

DataRow dr1 = dt.NewRow();
dr1["Code"] = "001";
dr1["Name"] = "测试1";
dt.Rows.Add(dr1);
DataRow dr2 = dt.NewRow();
dr2["Code"] = "002";
dr2["Name"] = "测试2";
dt.Rows.Add(dr2);

this.comboBox1.DataSource = dt;
this.comboBox1.DisplayMember = "Name";
this.comboBox1.ValueMember = "Code";

comboBox1.SelectedValue