I am using Developer Express control and try to make asp.net application .We bind grids with LLBLGenProDataSource(not 2) and we have a problem during update entity.When i update entitiy at the first time nothing happen wrong but when i update same entity second time i got this error "During a save action an entity's update action failed. The entity which failed is enclosed.".
Note:I didnt write any code for update,delete,insert statements.
Do you have any solution?
Thanks for helps