unit DataModule;interfaceuses
SysUtils, Classes, DB, ADODB;type
TDataModuleForm = class(TDataModule)
ADOConnection1: TADOConnection;
ADOStoredProc1: TADOStoredProc;
ADOStoredProc2: TADOStoredProc;
ADOStoredProc3: TADOStoredProc;
private
{ Private declarations }
public
{ Public declarations }
end;var
DataModuleForm: TDataModuleForm;implementation{$R *.dfm}end.procedure TMake_Rnew_KardForm.FormCreate(Sender: TObject);
begin
//////////////////////////////////////////// 使 edit(x) 的 Enabled:= DataModuleForm.ADOStoredProc2.Close;end;
编译时,提示的错误如附件:project gamesys.exe raised exception class eaccessviolation with message '
access violation at address 00529e82 in module 'gamesys.exe',read of
address 0000005c'
如果 去掉 DataModuleForm.ADOStoredProc2.Close; 则没有错误
请教各位大哥,我是错在那里呢?谢谢!
SysUtils, Classes, DB, ADODB;type
TDataModuleForm = class(TDataModule)
ADOConnection1: TADOConnection;
ADOStoredProc1: TADOStoredProc;
ADOStoredProc2: TADOStoredProc;
ADOStoredProc3: TADOStoredProc;
private
{ Private declarations }
public
{ Public declarations }
end;var
DataModuleForm: TDataModuleForm;implementation{$R *.dfm}end.procedure TMake_Rnew_KardForm.FormCreate(Sender: TObject);
begin
//////////////////////////////////////////// 使 edit(x) 的 Enabled:= DataModuleForm.ADOStoredProc2.Close;end;
编译时,提示的错误如附件:project gamesys.exe raised exception class eaccessviolation with message '
access violation at address 00529e82 in module 'gamesys.exe',read of
address 0000005c'
如果 去掉 DataModuleForm.ADOStoredProc2.Close; 则没有错误
请教各位大哥,我是错在那里呢?谢谢!
这是什么意思???
因为在formcreate时 DataModuleForm还没有创建呢
???
实在不懂啊?
请教:
是写成
procedure TMainUnitForm.N8Click(Sender: TObject);begin
Make_Rnew_KardForm:=TMake_Rnew_KardForm.Create(nil);
try Make_Rnew_KardForm.ShowModal;
DataModuleForm.ADOStoredProc2.Close;
finally
Make_Rnew_KardForm.Free;
end;
end;
还是写成:
procedure TMainUnitForm.N8Click(Sender: TObject);begin
Make_Rnew_KardForm:=TMake_Rnew_KardForm.Create(nil);
try
DataModuleForm.ADOStoredProc2.Close;
Make_Rnew_KardForm.ShowModal;
finally
Make_Rnew_KardForm.Free;
end;
end;
谢谢!
后面还有一些东西没有写出来DataModuleForm.ADOStoredProc2.Close;
...............................
..............................
DataModuleForm.ADOStoredProc2.open;