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Hi
 

I have datagridview. I was change datacolum type to DataGridViewComboBoxColumn;
 
but when I binding datasource to my datagrid have this error :the following exception occurred in the datagridview .
system.ArgumentException:DataGridViewComboBoxCell value is not valid
 
to replace this defult dialog please handle the dataerror event;
 

Can you Help me?
Posted 19-Oct-11 0:16am
Edited 19-Oct-11 0:17am
v2

1 solution

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Solution 1

When you create a column of combo boxes, those combos must be assigned a list of items which will be displayed when you select it. The value which goes into the dgv cell must be in that list of items. In your case, one or more of the combo box cells contains a value which is not in the item list, hence the cell value is invalid.
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Comments
raheleh_es at 22-Oct-11 0:26am
   
how Can I add combo box cell for all row when I set dataset to data grid view ;
 
...I wrote this code but it does n't work:datagridview.DataSource = ds;
 
datagridview.DataMember = "selectE";
 
DataGridViewComboBoxCell cell = new DataGridViewComboBoxCell();
 
for (int i = 0; i < ds.Tables["Post"].Rows.Count; i++)
 
{
 
cell.Items.Add(ds.Tables["Post"].Rows[i][0].ToString());
 
}
 
for (int j = 0; j < ds.Tables["selectE"].Rows.Count; j++)
 
{ datagrid_Name181[0,j] = cell;
 
}

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