我试图填充一个MVC的下拉列表中选定的值字段,但我一直不成功。 我使用MVC 5.1。
这里是选择的值并显示销售收入的模式的截图:
相反,销售单据被选择,模型默认测算:
当我使用的ViewData,下拉成功地工作:
Html.DropDownList( “JMASettings.InvoiceMode”)
这里是我的代码:
public void GetInvoiceMode(JMASettings model)
{
Dictionary<string, string> modes = new Dictionary<string, string>();
modes.Add("Estimates", "Estimates");
modes.Add("Invoices Only (Payments If Paid)", "Invoices");
modes.Add("Invoices No Payments", "InvoicesNoPayments");
modes.Add("Sales Receipts", "Sales Receipts");
if (Session["dataSource"] != null && Session["dataSource"].ToString() == "QBD")
modes.Add("Sales Orders", "Sales Orders");
IList<SelectListItem> ilSelectList = new List<SelectListItem>();
foreach (KeyValuePair<string, string> mode in modes)
{
SelectListItem selectListItem = new SelectListItem();
selectListItem.Text = mode.Key;
selectListItem.Value = mode.Value;
if (model.InvoiceMode == mode.Value)
selectListItem.Selected = true;
else if (String.IsNullOrEmpty(model.InvoiceMode) && mode.Key == "Sales Receipts")
selectListItem.Selected = true;
ilSelectList.Add(selectListItem);
}
ViewData["JMASettings.InvoiceMode"] = ilSelectList;
}