绑定LookupEdit存储库

Question

我在devexpress xtragrid控件中有三个lookupedit存储库（三列）。我想基于从lookupedit1和lookupedit3中选择的值基于lookupedit2来绑定lookupedit2。当我点击lookupedit时，我只能看到填充的元素。但是，它不会在网格上显示所选元素。

以下是我使用的代码：

void repositoryLookupEdit1_EditValueChanged(object sender, EventArgs e) {
    LookUpEdit edit = gridView.ActiveEditor as LookUpEdit;
    int val = Convert.ToInt32(edit.EditValue);
    if (!val.Equals(0)) {
        var elements = from e in dc.Elements select e;
        repositoryLookupEdit1.DisplayMember = "paymentType";
        repositoryLookupEdit1.ValueMember = "paymentTypeID";
        repZone.DataSource = bindData(elements);  
    }
}
public BindingSource bindData(object obj) {
    BindingSource ctBinding = new BindingSource();
    ctBinding.DataSource = obj;
    return ctBinding;
}

可能出现什么问题？

Answer 1

我相信这个例子会有所帮助： How to filter a second LookUp column based on a first LookUp column's value