我遇到有关使用组合框删除数据的问题。该错误提示我不知道如何解决。任何人都可以帮助我吗?
private void btnDel_Click(object sender, EventArgs e)
{
using (testEntities Setupctx = new testEntities())
{
var Lo = Convert.ToInt16(cbLocationData.SelectedValue);
var DeleteLocation = (from delLocation in Setupctx.locations
where delLocation.Location1 == Lo
select delLocation).Single();
Setupctx.DeleteObject(DeleteLocation);
Setupctx.SaveChanges();
this.Delete_Location_Load(null, EventArgs.Empty);
MessageBox.Show("Selected Shift Timing Has Been Deleted.");
}
}
那个部分where delLocation.Location1 == Lo
显示以下错误
运算符“==”不能应用于“string”和“short”类型的操作数。
对你的帮助表示感谢。
创建一个类似这样的方法:
private void LoadLocation()
{
using (testEntities Setupctx = new testEntities())
{
var storeLocation = (from vL in Setupctx.locations
select new
{
Location1 =vL.Location1
}
);
cbLocationData.DataTextField = "Location1";
cbLocationData.DataSource = storeLocation;
cbLocationData.DataBind();
}
}
然后在页面 load(asp.net)/form Load(winform) 上添加:
LoadLocation();
希望这有帮助。
Regards
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