如何从与linq的combobox绑定中获得valuemember？

Question

如何从linq

的combobox绑定中获取valuemember

 cmb_projectName.DataSource = linq1.tbl_Projects.Select(c => new {c.ID,c.ProjectName }).ToList();

int projectID = Convert.ToInt32( cmb_projectName.SelectedValue);

cmb_projectName.DisplayMember =“ProjectName”;            cmb_projectName.ValueMember =“ID”;

---

cmb_projectName.SelectedValue ==> return {ID = 1, ProjectName = "projectname1" }

我想返回Just ID值;

有什么问题?? !!

Answer 1

您必须为ValueMember设置ComboBox，否则它将是您所看到的：

comboBox1.ValueMember = "ID";
//or
comboBox1.ValueMember = "ProjectName";//It's up to you

然后comboBox1.SelectedValue将返回ID或ProjectName，具体取决于您设置的ValueMember，假设您将其设置为"ID"，那么您可以获得SelectedValue喜欢这样：

var id = (int) comboBox1.SelectedValue;

Answer 2

您所用的代码错误：

cbo.DataSource = StronglyDataTable.OrderBy(x => x.pName)).Select(x => new { x.pID, x.pName });
cbo.DisplayMember = "pName";
cbo.ValueMember = "pID";

正确的代码：

cbo.DisplayMember = "pName";
cbo.ValueMember = "pID";
cbo.DataSource = StronglyDataTable.OrderBy(x => x.pName)).Select(x => new { x.pID, x.pName });