c# - Failed to get schema for this query Visual Studio 2015 -

-

i have page in program has datagridview object on it. populated query selects data database table called docs.

the table has 4 columns:

  1. applicant_name
  2. doc_id
  3. doc_name
  4. doc_contents

i'm trying add delete query user delete document table when select , hit 'delete' button.

when try create delete query,

"failed schema query"

message , can't understand why.

my query looks this:

delete docs        (doc_id = @param3)

could explain why i'm getting error?

are using data binding load adapter, if yes pz check if insert update delete statement generated adapter.


Comments

Post a Comment

Popular posts from this blog

php - Autoloader issue not returning Class -

-
problem? bootloader (autoloader) not seem working properly, or i'm missing something. here simplified code. the code below returns class "skeleton" not exist. on index.php file. index.php <?php include 'bootloader.php'; use skeleton\html\loginheader; $tool = new skeleton/html/loginheader(); bootloader.php <?php function boot($classname) { $filename = ''; $namespace = ''; // sets include path "src" directory $includepath = dirname(__file__).directory_separator.'src'; if (false !== ($lastnspos = strripos($classname, '\\'))) { $namespace = substr($classname, 0, $lastnspos); $classname = substr($classname, $lastnspos + 1); $filename = str_replace('\\', directory_separator, $namespace) . directory_separator; } $filename .= str_replace('_', directory_separator, $classname) . '.php'...
Read more

ruby - Prevent Custom Validation Error on Association -

-
i have app list , email models many many association. want users able add many emails lists @ once, have function in controller split emails custom textfield in new list form "emails" array. i want validation error if it's blank added custom validation on field in lists model: class list < applicationrecord has_and_belongs_to_many :emails #tried adding ", validates: false" here too, didn't work #custom attr_accessor :emails validates :emails, presence: true end it works great, except when try associate existing email list (in case user entered 1 in db), validation error. oddly, can prevent validation error when associating net new emails lists "(validation: false)" seen below, not when email exists already, if add save function , append "validation: false". part of controller in question is: emails.each |email| if email.where(email: email).blank? db_email = email.new( email: email ) db_email...
Read more

c++ - Why am i getting wrong values when performing PE base relocation? -

-
i trying perform pe base relocation , whole concept, data structures, method , why doing not problem that. days have been trying code work whatever keep getting undefined/wrong relocation types in variable called relocationtype(obviously) , have feeling might getting wrong offsets aswell allthought when checked debugger few bytes off, regardless cause crash. i should inform of relocation types correct, , either image_rel_absolute or image_rel_based_highlow 1 expect, after few loops finds wrong values. not have clue happening, suspect pbaserelocation might few bytes of reason after while. here relocation function: int fixrelocs(dword imagebase, pimage_nt_headers ntheaders, image_base_relocation *reloc, unsigned int size) { pimage_base_relocation pbaserelocation; image_data_directory datadir; pword list; dword delta; dword count; dword *patchaddr; unsigned char* dest; unsigned char* base = (unsigned char*)imagebase; bool ndelta = false; datadir = (image_data_directory)ntheader...
Read more