when I use columntype combobox ,how can I cancel the select value imediately after I select the value which already appear in other rows?

[Sean]

when I use columntype combobox ,how can I cancel the select value imediately after I select the value which already appear in other rows?

[Sean]

Hi,about this question I want to know how can I get the currentcellvalue before gridDataBoundGrid1.CurrentCell.ConfirmChanges() happen and after I select a new value,so I can compare the value I choose with the old data.
thanks.

>when I use columntype combobox ,how can I cancel the select value imediately after I select the value which already appear in other rows?

[Administrator]

Here is a minimal sample that uses tableControlCurrentCellValidating to make sure your user never chooses a duplicate value in a combobox column.





WindowsApplication4.zip

[Sean]

Thanks for your codes.My question is resolved.

[Administrator]

Just for the record for anyone who might be trying to use this sample, I think the code that Inserts a new value should be changed to:

 uniquesList.Insert(-(loc + 1), k);

[Sean]

I attach a file that can resolve my problem and also control the rows number for no more than the items count in the dropdownlist.

willing it will help other people.



Test1.zip