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I want use List bind to DataGridViewComboBoxColumn as a custom datasource.but always occur a dataerror when ui show.i get error message ,it's about cell value illegal .
what should i do ?
code list below:
 
enum ComStationType { PCPSYS,ESPSYS...}
 
class BindEntity
{
public string Name{get}
public object Value{get}
}
 
DataGridViewComboBoxColumn dgvc = new DataGridViewComboBoxColumn();
dgvc.DisplayStyle = DataGridViewComboBoxDisplayStyle.Nothing;
dgvc.DataPropertyName = "column1";
dgvc.DataSource = GetComStationTypeInfo();//GetComStationTypeInfo() return a List for bind!
dgvc.DisplayMember = "Name";
dgvc.ValueMember = "Value";
 
this.dataGridView1.Columns.Add(dgvc);
 
DataTable dt = new DataTable();
dt.Columns.Add("column1", typeof(ComStationType));
DataRow dr = dt.NewRow();
dr[0] = ComStationType.ESPSYS;
dt.Rows.Add(dr);
 
this.dataGridView1.DataSource = dt;
Posted 12-Dec-12 23:34pm
shan423349
Edited 12-Dec-12 23:40pm
v2

1 solution

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Solution 1

I also had such errors when binding a combo in a datagrid...
 
my workaround was to implement a IValueConverter to the binding, and handled there the NULL errors.
regards
Patrick
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