ComboBox（双向）绑定到对象属性

Question

In the database, table TblPerson has a CHAR(1) field called Gender with a check constraint on possible values null, 'M' and 'F'

I'm trying to display (and two-way bind) the (EF mapped to type string ) TblPerson.Gender property inside a ComboBox , but I don't seem to be get it to work.

I bind my other controls ( TextBox es) to the same TblPerson object without issues. Have set an ItemsSource according to the check constraint:

comboBoxGender.ItemsSource = new char[] { '\0', 'M', 'F' };

But then I fail to grasp the link between the ItemsSource and the binding of the object property.
I'm not even trying to show 'male' or 'female' and link that to 'M' and 'F', so I don't think I need a converter (or do I?)

So what do I do with those (in)famous three ComboBox properties I need to set to make this work?
Been at this for some time, haven't made the click yet. Yes, I've read Microsofts How to: Use SelectedValue, SelectedValuePath, and SelectedItem .

Answer 1

TblPerson.Gender和您的ItemsSource项必须为同一类型。

Answer 2

First of all, forget the "Tbl" naming. Entities are not tables. Entities are Entities.

Second, don't manipulate UI elements' properties in procedural code.

Thid, just use SelectedItem and you're good to go.

<ComboBox ItemsSource={Binding SomeList} SelectedItem={Binding Person.Gender}/>