[英]datagrid column value not displaying c# winform
I have a business object that returns a list of objects. 我有一个返回对象列表的业务对象。 This list is then being used as a datasource for a datagridview on a winform.
然后,此列表用作winform上datagridview的数据源。 I load my list, set it to the datasource, refresh and view.
我加载列表,将其设置为数据源,然后刷新并查看。 One of the columns is present but has no values.
列之一存在,但没有值。 I see the header but no data.
我看到标题但没有数据。 The column is for TruckColorId.
该列用于TruckColorId。 Id shows the correct value.
ID显示正确的值。 Debugging the code I can see that there are objects in the list with all the properties I expect to see correctly with data, including the field in question.
调试代码,我可以看到列表中存在一些对象,这些对象具有我希望正确看到的所有属性,包括相关字段。
If I select a row and do a foreach loop of the selected row all columns have value but the TruckColorId. 如果我选择一行并对所选行执行foreach循环,则所有列均具有值,但TruckColorId除外。
public class TruckColor : EditBase
{
public int TruckColorId { get; set; }
public override int Id
{
get { return TruckColorId; }
set { TruckColorId = value; }
}
}
public class EditBase
{
public virtual int Id { get; set; }
public string ShortCode { get; set; }
public string Description { get; set; }
public IList<EditBase> GetAll()
{
return new List<EditBase>()
{
new TruckColor
{
Description = "abc",
Id = 1,
ShortCode = "A"
},
new TruckColor
{
Description = "abcd",
Id = 2,
ShortCode = "B"
},
new TruckColor
{
Description = "abcde",
Id = 3,
ShortCode = "C"
},
};
}
}
And here is the code in my form to load the trucks: 这是我的表格中用于装载卡车的代码:
public void InitTrucks()
{
TruckColor truck = new TruckColor();
var trucks = truck.GetAll();
if (trucks.Count() > 0)
{
dataGridView1.AutoGenerateColumns = true;
dataGridView1.DataSource = trucks;
dataGridView1.Refresh();
}
}
try this 尝试这个
var trucks = truck.GetAll();
if (trucks.Count() > 0)
{
List<TruckColor> RealTrucks = trucks.Select(x=>(TruckColor)x).ToList();
dataGridView1.AutoGenerateColumns = true;
dataGridView1.DataSource = RealTrucks;
dataGridView1.Refresh();
}
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