如何从具有自动完成功能的CombBox中获取SelectedValue？

Question

通常我以这种方式填充comoboBox：

combo.DataSource = dt;
combo.ValueMember = "id";
combo.DisplayMember = "name";

我可以很容易地用此代码获得选定的值

int i = convert.toint(combo.selectedValue);

但是在使用“自动完成”功能后，我无法获得它：

con = new SqlConnection(@"Data Source=.\sqlexpress;Initial Catalog=ACDB;Integrated Security=True;Pooling=False");
da = new SqlDataAdapter("SELECT id, name from usersTBL", con);
da.Fill(dt);
AutoCompleteStringCollection datasource = new AutoCompleteStringCollection();
for (int i = 0; i < dt.Rows.Count; i++)
{
  datasource.Add(dt.Rows[i][1].ToString());
}
this.comboSearch.AutoCompleteCustomSource = datasource;
this.comboSearch.AutoCompleteSource = AutoCompleteSource.CustomSource;
this.comboSearch.AutoCompleteMode = AutoCompleteMode.SuggestAppend;
this.comboSearch.DataSource = dt;
this.comboSearch.DisplayMember = "name";
this.comboSearch.ValueMember= "id";

现在，如果我从comboBox中手动选择一个项目，则可以获取SelectedValue，但是如果我使用自动完成，则不能。 我想从ComboBox中搜索Selected项目时获得SelectedValue。

Answer 1

现在工作正常

public frm_order()
    {

        InitializeComponent();

        AutoCompleteStringCollection farmerdatasource = new AutoCompleteStringCollection();
        for (int i = 0; i < farmer.GET_FARMER_NAME_HAVE_PRODUCT().Rows.Count;i++ ) {
            farmerdatasource.Add(farmer.GET_FARMER_NAME_HAVE_PRODUCT().Rows[i][1].ToString());
        }
        this.farmerNameCmb.AutoCompleteCustomSource = farmerdatasource;
        this.farmerNameCmb.AutoCompleteSource = AutoCompleteSource.CustomSource;
        this.farmerNameCmb.AutoCompleteMode = AutoCompleteMode.SuggestAppend;




    }

并在FORM_LOAD我填充组合框：

this.farmerNameCmb.DataSource = farmer.GET_FARMER_NAME_HAVE_PRODUCT();
            this.farmerNameCmb.DisplayMember = "farmerName";
            this.farmerNameCmb.ValueMember = "farmerID";

现在我可以在我的comboBox中搜索并轻松获取ValuMember