我有一个datagridview,我想将linq查询绑定到它。
这是我班级的水平:
private readonly SuburbanPortalEntities _entities;
private List<PaymentType> _paymentTypes;
以下是我的负载中的代码:
_paymentTypes = (from pt in _entities.PaymentTypes
where pt.CorporationId.Equals(_currentcorp.CorporationId)
select pt).ToList();
dataGridView_PaymentTypes.DataSource = _paymentTypes;
这是我的插入,在这一点上,什么都不做:
private void button_Insert_Click(object sender, EventArgs e)
{
var row = new PaymentType();
row.IsActive = false;
row.IsAdded = true;
row.CorporationId = _currentcorp.CorporationId;
row.TokenId = _token.TokenId;
row.PaymentTypeId = Guid.NewGuid();
row.ExcludeCreditCodes = 9;
_paymentTypes.Add(row);
}
我的简单保存按钮:
_entities.SaveChanges();
正在处理现有记录。当我对它们进行更改时,它会更改数据库中的数据。它不适用于新记录,我没有删除,因为我不知道该怎么做。
我更愿意允许datagridview在行上添加记录而不是按钮。此外,通过删除,允许datagridview处理删除。
有什么建议吗?
答案 0 :(得分:0)
将新数据插入sql server,你可以试试这个:
private void button_Insert_Click(object sender, EventArgs e)
{
var row = new PaymentType();
row.IsActive = false;
row.IsAdded = true;
row.CorporationId = _currentcorp.CorporationId;
row.TokenId = _token.TokenId;
row.PaymentTypeId = Guid.NewGuid();
row.ExcludeCreditCodes = 9;
_entities.PaymentTypes.Add(row); //for linq to sql, you should use InsertOnSubmit()
_entities.SaveChanges();
}