السلام عليكم
هذا الخطأ نتج عن تغيير في كود ال Seclection في الداتاسيت
Error 9 'Outlay_system.General_DatasetTableAdapters.TableAdapterManager' does not contain a definition for 'Case_studyTableAdapter' and no extension method 'Case_studyTableAdapter' accepting a first argument of type 'Outlay_system.General_DatasetTableAdapters.TableAdapterManager' could be found (are you missing a using directive or an assembly reference?) C:\Documents and Settings\Programer\my documents\visual studio 2010\Projects\Outlay_system\Outlay_system\Support_type.Designer.cs 133 38 Outlay_system
صراحة ما عرفت الحل