DataGridView ComboBoxCell问题 [英] DataGridView ComboBoxCell Issue

问题描述

我正在使用DataGridView控件来显示我的对象数据。



我的对象是

i am using DataGridView Control To display my object data.

my object is

public class Patient
{
    public string Name { get; set; }
    public Relation Relation { get; set; }
    public int Age { get; set; }
    public string ContactNumber { get; set; }
    public string FatherName { get; set; }
    public string HusbandName { get; set; }
}

我的DataGridView控件包含1个ComboBoxCellColoumn我的对象的Relation属性是enum类型。



问题是，当我将对象的实例分配给DataGridView时，它会给我以下错误



---------------------------

DataGridView默认错误对话框

- --------------------------

DataGridView中发生以下异常：







System.ArgumentException：DataGridViewComboBoxCell值无效。







要替换此默认对话框，请处理DataError事件。

--------------- ------------

OK

--------------------- ------

My DataGridView Control Contains 1 ComboBoxCellColoumn For Relation property of my object which is of enum type.

problem is that when i assign my object''s instance to DataGridView it give me following error

---------------------------
DataGridView Default Error Dialog
---------------------------
The following exception occurred in the DataGridView:



System.ArgumentException: DataGridViewComboBoxCell value is not valid.



To replace this default dialog please handle the DataError event.
---------------------------
OK
---------------------------

推荐答案

您应该将关系枚举中的每个项目添加到ComboBoxColumn项目中：

You should add each item from Relation enum into the ComboBoxColumn Items:

var combo = (grid.Columns["PatientRelation"] as DataGridViewComboBoxColumn);
foreach (var item in Enum.GetValues(typeof(Relation)))
    combo.Items.Add(item);

然后你可以设置ComboBoxColumn.DataPropertyName =Relation并将List附加到网格的数据源：

Then you can set ComboBoxColumn.DataPropertyName = "Relation" and attach List to grid''s DataSource:

var list = new List<Patient>();
list.Add(new Patient(){Relation = Relation.Relation1, Name = "X"});
list.Add(new Patient(){Relation = Relation.Relation2, Name = "Y"});
grid.DataSource = list;

不再有DataError

No more DataError

这篇关于DataGridView ComboBoxCell问题的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！