Click here to Skip to main content
11,705,610 members (46,964 online)
Click here to Skip to main content

The alxBase classes for work with DBF files

, 5 Nov 2002 268.7K 3K 52
Rate this:
Please Sign up or sign in to vote.
The alxBase classes for work with dbf files.

Introduction

This classes is useful for work with dbf files. The current version supports formats: FoxPro, Visual FoxPro, dBASEIII - dBASE 5.x, Clipper and HiPer-SIx. The memo fields also are supported. CDBFRecordset provides all the useful functions for navigation and modification in table. CDBFCursorset it is possible to use for work only with the selected records. CDBFTableDef it is used for creation and updating of structure of the table.

Create/Update table structure

For creation/updating of structure of the table are available functions:

    <li><code>CreateTable
  • ModifyTable
  • AddField
  • InsertField
  • ModifyField
  • MoveField
  • DeleteField
  • UpdateTable

For cancels any pending updates you may call function CanselUpdateTable().

try
{
	CDBFTableDef mNewTable;
	// begin create
	mNewTable.CreateTable(szFileName);

	// add field
	FIELD_REC FieldRec;
	memset(&FieldRec, 0, sizeof(FIELD_REC));
	memcpy(FieldRec.field_name, szFieldName, 10);
	FieldRec.field_type = FLD_TYPE_CHARACTER;
	FieldRec.len_info.char_len = 20;
	mNewTable.AddField(&FieldRec);

	// ...

	// end create
	mNewTable.UpdateTable();
}
catch(CDBFException* e)
{
	e->ReportError();
	e->Delete();
}

Navigation

For navigation are supported functions:

    <li><code>Move
  • MoveNext
  • MovePrev
  • MoveFirst
  • MoveLast
  • SetAbsolutePosition

You also may use functions: IsEOF(),IsBOF() ,GetRecordCount(),GetAbsolutePosition() .

try
{
	CDBFRecordset m_Set;
	m_Set.Open("test.dbf");
	while(!m_Set.IsEOF())
	{
		// ...
		m_Set.MoveNext();
	}
}
catch(CDBFException* e)
{
	e->ReportError();
	e->Delete();
}

Append/Edit record

For addition, changes of record are functions:

    <li><code>AddNew
  • Edit
  • SetFieldValue
  • Delete
  • Undelete
  • Update

You also may use functions: LockRecord(),UnlockRecord() ,GetFieldvalue().

try
{
	m_Set.Edit();
	m_Set.SetFieldValue("Key",varKey);
	m_Set.SetFieldValue("NAME",varName);
	m_Set.SetFieldValue("PHONE",varPhone);
	m_Set.Update();
}
catch(CDBFException* e)
{
	e->ReportError();
	e->Delete();
}

Find Functions

For find are supported functions:

    <li><code>FindFirst
  • FindNext
  • FindLast
  • FindPrev
try
{
	BOOL bFind = m_Set.FindFirst("LIKE('*Club*', NAME)");
	while(bFind)
	{
		// ...
		bFind = m_Set.FindNext();
	}
}
catch(CDBFException* e)
{
	e->ReportError();
	e->Delete();
}

Parameter of functions: FindFirst(),FindLast() , ... string expression of dBASE language.

Filter

For the filter SetFilter function is used:

    <li><code>SetFilter
try
{
	m_Set.SetFilter("LIKE('*Club*', NAME)");
	m_Set.Requery()
	// ...
}
catch(CDBFException* e)
{
	e->ReportError();
	e->Delete();
}

This function is supported only in classes CDBFCursorset and CDBFMemCursorset.

DBFView Demo

This sample shows some opportunities of library alxBASE.

More information about the product can be found at http://www.alxsoft.narod.ru.

License

This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

A list of licenses authors might use can be found here

Share

About the Author

Alexey
Web Developer
Russian Federation Russian Federation
Year of birth - 1974.
Eeducation - was ended by Kaliningrad State University in 1997.
Now I work as the engineer-programmer in Kaliningrad (RUSSIA).

You may also be interested in...

Comments and Discussions

 
QuestionAssertion Failed! Pin
Goa3-Jul-07 7:36
memberGoa3-Jul-07 7:36 
AnswerRe: Assertion Failed! Pin
Goa4-Jul-07 5:18
memberGoa4-Jul-07 5:18 
QuestionalxBase without mfc Pin
joviens19-Dec-06 5:44
memberjoviens19-Dec-06 5:44 
AnswerRe: alxBase without mfc Pin
S Mario26-Oct-09 18:08
memberS Mario26-Oct-09 18:08 
Generalfield content Pin
Joao Araujo21-Jan-06 15:51
memberJoao Araujo21-Jan-06 15:51 
GeneralDelete records Pin
pgiustinoni7-Jul-05 6:49
memberpgiustinoni7-Jul-05 6:49 
GeneralGood work But... Pin
ali TEKE11-Apr-05 3:37
memberali TEKE11-Apr-05 3:37 
GeneralProblem in adding new records Pin
Mr.V.Stephen29-Jan-05 23:04
memberMr.V.Stephen29-Jan-05 23:04 
GeneralRe: Problem in adding new records Pin
EndlessWinter10-Feb-05 16:18
memberEndlessWinter10-Feb-05 16:18 
GeneralIts really a very nice project Pin
vstephen200221-Jan-05 23:37
membervstephen200221-Jan-05 23:37 
GeneralUsing the FindFirst function Pin
Alex Evans1-Nov-04 11:14
memberAlex Evans1-Nov-04 11:14 
GeneralRe: Using the FindFirst function Pin
EndlessWinter10-Feb-05 16:23
memberEndlessWinter10-Feb-05 16:23 
GeneralConverted library for Windos CE Pin
Alex Evans2-Oct-04 21:53
memberAlex Evans2-Oct-04 21:53 
GeneralUsing this with Windows CE Pin
Alex Evans1-Oct-04 20:51
memberAlex Evans1-Oct-04 20:51 
GenerallockRecord() Pin
thangoftin29-Aug-04 18:18
memberthangoftin29-Aug-04 18:18 
GeneralUsing the FindFirst function Pin
Alex Evans1-Nov-04 11:17
memberAlex Evans1-Nov-04 11:17 
QuestionHow can i insert/update/delete image file? Pin
Mr.Ahn7-Jul-04 1:21
memberMr.Ahn7-Jul-04 1:21 
QuestionHow to pack deleted record Pin
simranjeet11-Jun-04 3:08
membersimranjeet11-Jun-04 3:08 
AnswerRe: How to pack deleted record Pin
Alexey14-Jun-04 19:28
memberAlexey14-Jun-04 19:28 
QuestionHow to pack deleted record Pin
simranjit11-Jun-04 3:02
susssimranjit11-Jun-04 3:02 
QuestionSample db files? Pin
chenhuisheng13-Apr-04 15:21
memberchenhuisheng13-Apr-04 15:21 
GeneralGreat!! - one question Pin
bdiamond29-Mar-04 3:30
memberbdiamond29-Mar-04 3:30 
GeneralRe: Great!! - one question Pin
Alexey29-Mar-04 18:33
memberAlexey29-Mar-04 18:33 
Generalcan't write header info correctly Pin
bdiamond18-Mar-04 7:10
memberbdiamond18-Mar-04 7:10 
GeneralRe: can't write header info correctly Pin
Alexey18-Mar-04 19:42
memberAlexey18-Mar-04 19:42 
Generale:\temp\alxBASE\SRC\ALXParserFuncDef.cpp(1221): error C2666: &#8220;pow&#8221; : 7 overloads have the similar conversion Pin
Tom_lyd17-Dec-03 20:10
memberTom_lyd17-Dec-03 20:10 
GeneralRe: e:\temp\alxBASE\SRC\ALXParserFuncDef.cpp(1221): error C2666: ?pow? : 7 overloads have the similar conversion Pin
Dmitry Naumov21-Jan-04 21:14
memberDmitry Naumov21-Jan-04 21:14 
GeneralRe: e:\temp\alxBASE\SRC\ALXParserFuncDef.cpp(1221): error C2666: ?pow? : 7 overloads have the similar conversion Pin
m0xx22-Jun-04 21:57
memberm0xx22-Jun-04 21:57 
GeneralRe: e:\temp\alxBASE\SRC\ALXParserFuncDef.cpp(1221): error C2666: ?pow? : 7 overloads have the similar conversion Pin
shaunwerkhoven28-Sep-04 0:15
membershaunwerkhoven28-Sep-04 0:15 
GeneralRe: e:\temp\alxBASE\SRC\ALXParserFuncDef.cpp(1221): error C2666: ?pow? : 7 overloads have the similar conversion Pin
Ganjoo11-Oct-04 4:00
sussGanjoo11-Oct-04 4:00 
GeneralRe: e:\temp\alxBASE\SRC\ALXParserFuncDef.cpp(1221): error C2666: ?pow? : 7 overloads have the similar conversion Pin
Anthony_Yio17-May-05 23:11
memberAnthony_Yio17-May-05 23:11 
GeneralHelp, I'm a newbie Pin
arktow6-Nov-03 8:06
memberarktow6-Nov-03 8:06 
GeneralRe: Help, I'm a newbie Pin
Alexey9-Nov-03 19:53
memberAlexey9-Nov-03 19:53 
GeneralAssertion Failed! Pin
dade8888817-Oct-03 0:20
memberdade8888817-Oct-03 0:20 
GeneralRe: Assertion Failed! Pin
Alexey17-Oct-03 3:02
memberAlexey17-Oct-03 3:02 
GeneralVC60.pdb Pin
dade8888816-Oct-03 22:01
memberdade8888816-Oct-03 22:01 
GeneralRe: VC60.pdb Pin
Alexey16-Oct-03 23:36
memberAlexey16-Oct-03 23:36 
GeneralRe: VC60.pdb Pin
KarstenK17-Oct-03 0:18
memberKarstenK17-Oct-03 0:18 
Generaldata not updated in DBFMemCursor Pin
liyuncheng5-Oct-03 17:23
sussliyuncheng5-Oct-03 17:23 
GeneralRe: data not updated in DBFMemCursor Pin
liyuncheng5-Oct-03 17:27
sussliyuncheng5-Oct-03 17:27 
GeneralSource for other apps - DBFNavigator, NTXFiew, etc. Pin
drpc26-Jul-03 1:46
memberdrpc26-Jul-03 1:46 
GeneralRe: Source for other apps - DBFNavigator, NTXFiew, etc. Pin
Anonymous27-Jul-03 19:49
sussAnonymous27-Jul-03 19:49 
GeneralUpdating table structure of 1 file from another. Pin
Anonymous21-Jul-03 7:30
sussAnonymous21-Jul-03 7:30 
GeneralRe: Updating table structure of 1 file from another. Pin
Alexey21-Jul-03 19:15
memberAlexey21-Jul-03 19:15 
It is necessary to modify the table. To add 10 fields.
GeneralRe: Updating table structure of 1 file from another. Pin
Anonymous23-Jul-03 9:40
sussAnonymous23-Jul-03 9:40 
GeneralOracle Export to DBF Pin
Hamed Abnagar19-Jul-03 17:12
memberHamed Abnagar19-Jul-03 17:12 
QuestionHow to create a datetime field and what format is the datetime for input? Pin
liyuncheng17-Jul-03 16:40
memberliyuncheng17-Jul-03 16:40 
AnswerRe: How to create a datetime field and what format is the datetime for input? Pin
Alexey17-Jul-03 19:15
memberAlexey17-Jul-03 19:15 
QuestionHow to pack deleted record? Pin
liyuncheng14-Jul-03 16:21
memberliyuncheng14-Jul-03 16:21 
AnswerRe: How to pack deleted record? Pin
Alexey14-Jul-03 19:22
memberAlexey14-Jul-03 19:22 

General General    News News    Suggestion Suggestion    Question Question    Bug Bug    Answer Answer    Joke Joke    Rant Rant    Admin Admin   

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.

| Advertise | Privacy | Terms of Use | Mobile
Web03 | 2.8.150819.1 | Last Updated 6 Nov 2002
Article Copyright 2002 by Alexey
Everything else Copyright © CodeProject, 1999-2015
Layout: fixed | fluid