更新/插入实体上下文后如何刷新下拉列表 [英] How do I refresh dropdownlist after updating/inserting entity context
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问题描述
我有一个下拉列表,在我对实体进行更新和插入后,我想刷新以显示新插入的联系人姓名。这是我插入新记录的代码:
I've a dropdownlist that after I make updates and inserts to the entity I would like to refresh to display the newly inserted contact name. Here's my code for inserting the new record:
private void btnCreate_Click(object sender, EventArgs e)
{
var nextContact = context.Contacts.OrderBy("it.ContactID DESC").First();
int nextContactID = nextContact.ContactID + 1;
string[] name = txtTenant.Text.Split(' ');
var contact = Contact.CreateContact(nextContactID, name[0].ToString(), name[1].ToString());
var address = new Address();
address.Address1 = txtAddress.Text;
contact.ContactNumber = txtContactNum.Text;
address.Mortgage = txtMortgage.Text;
address.RemainingMortgage = txtRemainingMortgage.Text;
address.Rent = txtRent.Text;
address.Period = cboPeriod.SelectedIndex;
address.RentArrears = txtRentArrears.Text;
address.Rates = txtRates.Text;
address.RatesUpToDate = chkRates.Checked;
address.RentArrears = txtRentArrears.Text;
address.Repairs = txtRepairs.Text;
//join the new address to the contact
address.Contact = contact;
//add new graph to the contact
context.AddToContacts(contact);
context.SaveChanges();
}
推荐答案
插入后调用函数QueryContacts()
After the insertion call the function QueryContacts()
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