Error in sorting datagridview's columns

[sweet_babylhyn]

I have a datagridview and all its columns are set to Double Datatype. The problem is when I changed the value of cell and try to sort the column, it shows me an error "Object must be of type Double." I check each cell but all its values are number and I can sort all the columns before I edit one cell. But when I tried to change the value of only one cell and sort the columns, the errors will show. Its weird because I only removed 1 digit of the cell value and I cant sort at all.

Dim col As New DataGridViewTextBoxColumn
col.ValueType = GetType(Double)

Thanks in advance.

[dglienna]

Look up DirectCast()