APARTMENT MANAGEMENT SYSTEMSynopsisThis project entitled
Apartment management system is developed by using VB.NET as front
end and MS.ACCESS as back end. In present trend this software
application is used in our day to day life. This application is
used to reduce the manual work and complete work in short time and
the data will be secure. All the work to be maintained and updates
the database as time to time process. The apartment management
system contains the admin form, apartment details, block details,
maintenance details, personal details and billing details. The
first module is the admin to enter the username and password. The
username and password is correct it will go to the next module. The
second module customer can view the information about the apartment
details like apartment name, facilities, total number of flats,
total number of blocks, vacant flats, rent amount, owner name, age
and sex. The third module is the first block details has contain
total flats, rented flats, vacant flats, own flats, rent amount,
service charge, tax and first block monthly expanses. The fourth
module is the second block details has contain total flats, rented
flats, vacant flats, own flats, rent amount, service charge, tax
and second block monthly expanses. The fifth module is the second
block details has contain total flats, rented flats, vacant flats,
own flats, rent amount, service charge, tax and second block
monthly expanse. The sixth module is the maintenance has contain
first block monthly expanses second block monthly expanses third
block monthly expanses and total amount .The seventh module is the
personal details has contain name, age, address, family members,
sex, mobile number and flats. The final module of apartment
management system is billing has contain name, flats, amount paying
date and signature of the owner.
1.INTRODUCTIONApartment management system is design in vb.net.
In this apartment management system is used for monitoring and
controlling the transaction in apartment. This software is useful
for the promoters. Which mainly focus on basic operations like
admin, apartment details, block details, maintenance details,
personal details and billing details. The apartment module has
contain information about the apartment like apartment name,
facilities, owner name, age, sex, total number of flats weather
that flats are rented flats or own flats and rent amount. Give the
total number of flats and rented flats it will automatically
calculate and display on the vacant flats. The block details is
contain in three modules like first block details, second block
details, third block details. These blocks are also included in
total flats, rented flats, vacant flats, own flats, service charge,
rent amount and tax. The service charge, rent amount and tax will
be calculated and display in the form of first block monthly
expanses. These operations are same as the second block details and
third block details. The fourth module of apartment management
system is maintenance. This is contain in fields like first block
monthly expanses second block monthly expanses, third block monthly
expanses and total amount. The first block, second block and third
block monthly expanses are calculated and display in the form of
total amount. The personal module is contain new customer
information like name, age, sex, address, flats weather having
rented flats or own flats, mobile number and rent amount. The bill
module provide authority to the customer. This module having name,
rent amount, amount paying date and signature of the owner and all
those information are contain in the form of reports.
1.1 System Specification1.1.1 Hardware ConfigurationProcessor :
Intel dual coreBoard : Intel ChipsetRAM:1 GB Hard disk:40 GB 1.1.2
Software Configuration Operating system: windows XP Frame work: dot
net Front end: vb.net Back end: ms access 1.2.3 Software
DescriptionVB.NETThe system is developed using VB.NET, which is a
very popular Microsoft Product developed by Microsoft Corporation.
This is one of the improved languages from basic language. VB.NET
includes a variety of open active controls for user interfaces to
design application forms.VB.NET is the multiple document inter face
format (MDI).The user interface is the part of the program that
responds to the key press and mouse clicks. The action is referred
to as events of the form and controls in the form. VB.NET provides
vast properties and methods for each control, which helps to
utilize all those, functions for record manipulations.
Menu driven is one of the most effective controls in the VB.NET.
In this menu driven the menu names in a program appear in the menu
bar when the user selects a menu, that menu open. Each menu usually
contains items arranged in a vertical list.These items are often
grouped into functional groups with menu separators. When the user
selects a menu item, that item appears highlighted; pressing enter
or releasing the mouse button opens that item. Each item should
have a unique access character for users to choose commands with
keyboards. The user reaches the menu or menu item by pressing alt
key and access character. Short cuts are also useful to the user
these keys are faster than access character in that the user only
needs to enter a shortcut to execute the corresponding menu
item.The .NET framework has two main components Common Language
Runtime (CLR). NET framework class library.Common Language Runtime
(CLR). The common language runtime is the foundation of the .NET
framework .you can think of the runtime as an agent that manages
code at execution time, providing core services such as memory
management and thread management while also enforcing strict type
safety and other forms of code accuracy that ensure security and
robustness. In fact, the concept of code management is a
fundamental principal of the runtime .Code that targets the runtime
is known as managed code, while code that dose not target the
Internet explore is an example of an unmanaged application that
runtime (in the form of a mime type extension).Using internet
explorer to host the runtime enables you to embed managed
components or windows from controls in the HTML documents.The
Components Of CLR Are: CTS =>Common Type System. CLS =>Common
Language Specification CLS =>Common Language Specification CIL
=>Common Intermediate Language JIT =>Just In Time Compiler
VES =>Virtual Execution SystemCTS Common Type SystemThis is the
range of types that the .NET runtime understands, and therefore
that .NET application can use. The common type system supports both
object oriented programming like java as well as procedural
languages like c .It deals with two kinds of entities such objects
and values.CLS-Common Language SpecificationThis is a subset of the
CTS that all .NET languages are expected to support. The idea is
the any program that uses CLS-compliant types can interoperate with
any .NET program written in any language. If a component written in
one language (say c#) is to be used from another language (say
VB.NET) then the component writer must adhere to type and
structures defined by CLS.
CIL-Common Intermediate LanguageAll compilers complying with CLR
must generate an intermediate language representation called common
intermediate language (CIL). The CIL uses this intermediate
language to either generate native code or use just in compiler
(JIT) complication to execute the intermediate code on the
fly.JIT-Just In Time CompilerThe JIT or just in time compiler is
the part of the runtime execution environment, which is used to
convert the intermediate language contained in the execution file,
called assemblies , into native executable code. VES-Virtual
Execution SystemVirtual execution system (VES) is more or less
equivalent to the JVM (Java Virtual Machine).VES loads, links and
runs the programs written for common language infrastructure
contained in portable executable (PE) files.VES fulfill its loader
function by using information contained in the metadata and uses
late binding (or linking) to integrate modules compiled separately,
which may even be written in different languages.NET Framework
Class LibraryThe .NET framework library is a collection of reused
types that tightly with the common language runtime (CLR). The
class library is object-oriented, providing type from which your
own managed code can derive functionality. Managed codes are
intermediate language codes along with metadata contained in
portable executable (PE) files. This not only makes the .NET
framework type easy to use, but also reduces the associated with
learning new features of the .NET framework.One can use the .NET
framework to develop the following types of application and
services.
Console application Scripted and hosted application Windows GUI
application (windows forms) VB.NET application SPECIAL FEATURES IN
VB.NET: VB.NET is an ideal programming language for developing
sophisticated professional application for Microsoft windows It
makes use of the graphical user interface for creating powerful
applications, which enables the user to interact easily within an
application. VB.NET provides many aspects such as easier
comprehension, user friendliness and faster application
development, which help the developer to design the application
more effectively. VB.NET provides the facilities such as log in
dialog form, browser form, query form ,option dialog form and
wizard from which enable the developer design the application more
effectivelyMS ACCESS:Microsoft office database management system is
fromMicrosoftthat combines thenwith graphical user
interfaceandsoftware-development tools. It is a member of
theMicrosoft Officesuite of applications, included in the
Professional and higher editions or sold separately.Microsoft
Access stores data in its own format based on the Access Jet
DatabaseEngine. It can also import or link directly to datastored
in other applications and databases.
Software developersanddata architectscan use Microsoft Access to
applications. Like otherOffice applications, Access is supported
byVisual Basic for Applications, anobject-orientedprogramming
language that can reference a variety of objects including DAO
(Data Access Objects),ActiveXData Objects, and many other ActiveX
components. Visual objects used in forms and reports expose their
methods and properties in the VBA programming environment, and VBA
code modules may declare and
callWindowsoperating-systemfunctions
2. SYSTEM STUDY2.1 Existing system The apartment details also
not easy task for organizing all these detail manually. So the
software was developed. It is used only storing the data. This
software is could not view the single user information. All the
information had contain in the single form..The apartment details
also not easy task for organizing all these details manually. So
not update any kind of information. The existing system could not
provide any reports. Did not provide any bill. It is not easy way
to handle work related to many apartments at a time. Data can
easily use unauthorized person. 2.1.1 Drawbacks Could not update
the details Could not provide the security Manual calculation lead
to error It take more time consumption No proper coordination for
fetching the data from the database. It requires a large
database.2.2 Proposed System Proposed system open an easy way for
viewing and update the information has to be allocated in the
module to apartment details. This system is carefully designed to
provide flexibility with regard to existing system. This proposed
system help to view the apartment details to the customer very
easily.
This software enable to keep records of the daily transactions
in a electronic manner which serve as a lot of energy, time and
money. All the information are contain in the separate form. It is
easy to handle works related to many apartments at a time without
confusion. Data is secured easy to retrieve old record in a short
period. 2.2.1 Features Updating and monitoring the flats details
easily by the admin Customer can easily view the all information
with report format Provide high security for database and design
This project save time and effort This project provide the service
of printing the bill
3. SYSTEM DESIGN AND DEVELOPMENT3.1 Input DesignInput design is
one of the most expensive phases of the operation of computerized
system and is often the major problem of a system. A large number
of problems with the system can usually be traced back to fault
input design and method. Needless to say, therefore that the input
data is the life block of a system and has to be analyzed and
designed with the most consideration.The decisions made during the
input design are To provide cost effective method of input. To
achieve the highest possible level of accuracy. To ensure that
input is understood by the user.System analysts decide the
following input design details like, what data item to input, what
medium to use, how the data should be arranged or coded data items
and transaction needing validations to detect errors and at last
the dialogue to guide users in providing input. Input data of a
system may not be entering the data to the system for processing.
necessarily a raw data captured in the system from scratch. These
can also be the output of another system sub system. The design of
input covers all phases of input from the certain of initial data
to actual.3.2 Output DesignOutput design generally refers to the
results and information that are generated by the system. For many
end-users, output is the main reason for developing the system and
the basis on which they evaluate the usefulness of the
application.
The objective of a system finds its shape in terms of output.
The analysis of the objective of a system leads to determination of
outputs. Outputs of a system can take various forms. The most
common are reports, screens displays printed form, graphical
drawing etc. the outputs vary in terms of their contents,
frequency, timing and format. When designing output, the system
analyst must accomplish things like, to determine what information
to be present, to decide whether to display or print the
information and select the output medium to distribute the output
to intended recipients. External outputs are those, whose
destination will be outside the organization and which require
special attention as the project image of the organization.
Internal outputs are those, whose destination is within the
organization. It is to be carefully designed, as they are the users
main interface with the system. Interactive outputs are those,
which the user uses in communication directly with the computer.A
quality output is one, which meets the requirements of the end user
and presents the information clearly. In any system results of
processing are communicated to the users and to other system
through outputs. In output design it is determined how the
information is to be Designing computer output should proceed in an
organized, well thought out manner; the right output must be
developed while ensuring that each output element is designed so
that people will find the system can use easily and effectively.3.3
Database DesignThe database design is a must for any application
developed especially more for the data store projects. In the
project, login table is designed to be unique in accepting the
username and the length of the username and password should be
greater than zero. The complete listing of the tables and their
fields are provided in the annexure under the title Table
Structure.
Design is multi-step process that focuses on data structure
software architecture, procedural details, (algorithms etc.) and
interface between modules. The design process also translates the
requirements into the presentation of software that can be accessed
for quality before coding begins.Therefore, Software Design
methodology lacks the depth, flexibility and quantitative nature
that are normally associated with more classical engineering
disciplines. However techniques for software designs do exist,
criteria for design qualities are available and design notation can
be applied.Table Name : First block detailsDatabase Name : db3
Data FieldData Types
Total flatsNumber
Tented flatsNumber
Vacant flatsNumber
Own flatsNumber
Rent amountNumber
Service chargeNumber
TaxNumber
First block monthly expansesNumber
Table Name : Second block detailsDatabase Name :db3
Data FieldData Types
Total flatsNumber
Tented flatsNumber
Vacant flatsNumber
Own flatsNumber
Rent amountNumber
Service chargeNumber
TaxNumber
Second block monthly expansesNumber
Table Name : Third block detailsDatabase Name : db3Data
FieldData Types
Total flatsNumber
Tented flatsNumber
Vacant flatsNumber
Own flatsNumber
Rent amountNumber
Service chargeNumber
TaxNumber
Third block monthly expansesNumber
Table name :maintenance detailsDatabase name :db3
Data FieldData Types
First block monthly expansesNumber
Second block monthly expansesNumber
Third block monthly expansesNumber
Total amountNumber
Table name :personal detailsDatabase name :db3
Data FieldData Types
NameText
Family membersNumber
AddressText
AgeNumber
SexText
FlatsText
Mobile numberNumber
Table name :Billing detailsDatabase name : db3Data FieldData
Types
NameText
FlatsText
Rent amountNumber
3.5 System Development3.5.1 Description of modulesThe apartment
management system project contain several modules. All the module
are could be contain in separated form. The forms like apartment
details, first block details, second block details, third block
details, maintenance details, personal details and billing
details.Apartment DetailsThis module provide some kind of
operations like add, delete, update, first, next, last and submit.
This is used to manage all kind of information about the apartment
details like apartment name, facilities, total number of flats,
total no rented flats, total no own flats and rent amount.First
Block DetailsThe first block details contain in the operations are
add, delete, update, first, next, last and submit. This is used to
manage the all kind of information about the first block details
like total flats, rented flats, vacant flats, own flats, rent
amount, service charge, tax and first block monthly expenses.
Second Block DetailsThe second block details contain in the
operations are add, delete, update, first, next, last and submit.
This is used to manage the all kind of information about the first
block details like total flats, rented flats, vacant flats, own
flats, rent amount, service charge, tax and first block monthly
expenses.Third Block DetailsThe third block details contain in the
operations are add, delete, update, first, next, last and submit.
This is used to manage the all kind of information about the first
block details like total flats, rented flats, vacant flats, own
flats, rent amount, service charge, tax and first block monthly
expenses.
4.TESTING AND IMPLEMENTATIONUnit TestingUnit testing focuses
verification effort on the smallest unit of software design module.
Using the detailed design description as a guide, important control
paths are tested to uncover errors within the boundary of the
module. In this project, unit testing is performed in modules such
as apartment details, maintenance details and personal
details.System TestingText case scenarioLogin FormSuccessful
scenarioStep1: Login into the Form Step2: Enter the usernameStep3:
Enter the passwordStep4: Click on the Submit ButtonStep5: This will
be move to the next FormUnsuccessful scenarioStep1: Login into the
Form Step2: Enter the user name
Step3: Enter the incorrect passwordStep4: Click on the Submit
Button Step5: This should be prompt the message Your password is
IncorrectApartment DetailsSuccessful scenario Step1: Login into the
apartment details Step2: Enter the apartment name Step3: The
facilities will be display on the screen Step4: Enter the owner
name Step5: Enter the age Step6: Enter the gender Step7: Enter the
total flatsStep8: Enter the total blocksStep9: Enter the total
number of rented flatsStep10: This will be automatically calculate
and display on the vacant flats. The customer can view on the how
many vacant flats are available.Step11: Click on add ButtonStep12:
This information are save in the databaseUnsuccessful
scenarioStep1: Login into the apartment detailsStep2: Enter the
apartment name
Step3: The facilities will be display on the screenStep4: Enter
the owner nameStep5: Enter the ageStep6: Enter the genderStep7:
Enter the total flats as textStep8: This should prompt the message
Enter the total flats as NumberStep9: Enter the block
detailsStep10: Enter the total number of rented flatsFirst Block
DetailsSuccessful scenarioStep1: Enter the first block
detailsStep2: Enter the total flatsStep3; Enter the rented
flatsStep4: Enter the own flatsStep5: Enter the service charge
Step7: Enter the rent amountStep8: The rent amount, service charge
and tax these will be calculate and display in the form first block
monthly expansesStep9: Click the add Button the information are
save on the databaseStep10: If any changes to those fields just
view the information and replace the data.Step 11: Click on update
Button the information will be update on the database.Unsuccessful
scenarioStep1: Enter the first block details
Step2: Enter the total flatsStep3; Enter the rented flatsStep4:
Enter the own flatsStep5: Enter the service chargeStep6: Enter the
taxStep7: Enter the rent amount as textStep8: This should prompt
the message Enter rent amount as NumberStep9: : The rent amount,
service charge and tax these will be calculate and display in the
form first block monthly expansesStep10: Click the add Button the
information are save on the databaseStep11: If any changes to those
fields just view the information and replace the data.Step 12:
Click on update Button the information will be update on the
databaseBilling DetailsSuccessful scenarioStep1: Enter the billing
FromStep2: Enter the name as textStep3: Choose the flats weather
that flats are rented flats or own flatsStep4:If the flats are
rented flats choose the rent amount to that fieldStep5: Click the
add Button. This information will be store on the databaseStep6:
Click on the print Button. The bill will be printedUnsuccessful
scenarioStep1: Enter the billing From
Step2: Enter the name as text as NumberStep3: This should prompt
message Enter the name as stringStep4: Choose the flats weather
that flats are rented flats or own flatsStep5:If the flats are
rented flats choose the rent amount to that fieldStep6: Click the
add Button. This information will be store on the databaseStep7:
Click the print Button. If the printer is not available. This
should prompt the message printer is not availableStep6: Click on
the print Button. The bill will be printedPersonal
DetailsSuccessful scenarioStep1: Login into the personal
detailsStep2: Enter the customer nameStep4:Enter the family
membersStep5: Enter the addressStep6: Enter the customer ageStep7:
Enter the gender weather that person is male or femaleStep8: Choose
the flats weather that flats are rented flats or own flatsStep9:
Enter the mobile number Step10: Click add Button the information
will be save on the databaseUnsuccessful scenarioStep1: Login into
the personal detailsStep2: Enter the customer name
Step4:Enter the family membersStep5: Enter the addressStep6:
Enter the customer ageStep7: Enter the gender weather that person
is male or femaleStep8: Choose the flats weather that flats are
rented flats or own flatsStep9: Enter the mobile number as
textStep10:This should prompt the message Enter the mobile number
as NumberStep11: Click on the add Button the information will be
save on the databaseImplementationImplementation is the stage in
the project where the theoretical design in turned into a working
system and is giving confidence and the new system for the users
that it in work efficiently and effectively. It involves careful
planning, investigation of the current system and its constrains on
implementation, design of methods to achieve the change over, and
evaluation of change over methods. Apart from planning major task
of preparing the implementation are education and training of
users. The implementation process begins with preparing a plan for
implementation of the system. According to this plan the activities
are to be carried out, discussions made regarding the equipment and
resources and the additional equipment as to be acquired to
implement the new system. In network backup system no additional
resources are needed.
5. CONCLUSIONThe conclusion arrived at, is that the maintenance
of this project which has been developed is totally beneficial in
all aspects, considering the data accuracy or data security or data
access speed or even in case of usage. The project has met its
objectives. The system has been thoroughly tested with various test
and found to be fit for implementation. The system reliability is
high and enough security has been provided. The objectives of the
system have been achieved.The goals that have been achieved are:
Ensure process time and increase throughput. Simplifies the
operation. Avoid some manual work in the existing system. Reduce
data redundancy and inconsistency. User friendly input screens to
enter data. Provide uniformity among all screen formats The system
works in high speed and accuracy It handles bulk amount of data
Immunization of the system from unauthorized user
accessesBIBILOGRAPHYThe following books were referred the analysis
and execution phase of the project.
REFFERENCE BOOK
WEB REFERENCES 1. www. Vb.net tutorial.com 2.
www.vb.net-msacces-tutorial.com 3. www.tutorialspoint.com 4.
www.vb.net5. www.w3schools.comAppendicesa) Data Flow DiagramLevel
0
Login Report Adminn
Main FormLevel 1
Billing details
Third block details DEdetailsSecond block detail details
==ddetailsFirst block detailsPersonal detailsApartment details
Maintenance details
ReportReportReport
b) Sample Coding LoginPublic Class Form2
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e
As System.EventArgs) Handles cmd_submit.Click
If (txt_username.Text = "emperors" And txt_password.Text =
"msccs") Then Form3.Show() Else MsgBox("enter correct password")
End If
End Sub Private Sub cmd_quit_Click(ByVal sender As
System.Object, ByVal e As System.EventArgs) Handles cmd_quit.Click
End End Sub
End Class
Apartment detailsPublicClass Form3
Dim inc AsIntegerDim maxrows AsInteger Dim con AsNew
OleDb.OleDbConnection Dim cmd AsNew OleDb.OleDbCommand Dim
dbprovider AsString Dim dbsource AsString Dim ds AsNew DataSet Dim
da As OleDb.OleDbDataAdapter Dim sql AsString
PrivateSub Form3_Load(ByVal sender As System.Object, ByVal e As
System.EventArgs) HandlesMyBase.Load
Dim con AsNew OleDb.OleDbConnection con.ConnectionString =
"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\project\db3.mdb"
con.Open() sql = "SELECT * FROM apartment" da = New
OleDb.OleDbDataAdapter(sql, con) da.Fill(ds, "db3") con.Close()
maxrows = ds.Tables("db3").Rows.Count inc = 1 rft.Text = "WIFI
CONNECTION WATER CAR PARKING LIFT"
EndSub
PrivateSub navigate()
txt_apname.Text = ds.Tables("db3").Rows(inc).Item(0) rft.Text =
ds.Tables("db3").Rows(inc).Item(1) txt_ownername.Text =
ds.Tables("db3").Rows(inc).Item(2) txt_age.Text =
ds.Tables("db3").Rows(inc).Item(3) combo1.Text =
ds.Tables("db3").Rows(inc).Item(4) txt_totalflats.Text =
ds.Tables("db3").Rows(inc).Item(5) txt_totalblocks.Text =
ds.Tables("db3").Rows(inc).Item(6) txt_totalnoofrentedflats.Text =
ds.Tables("db3").Rows(inc).Item(7) txt_vacantflats.Text =
ds.Tables("db3").Rows(inc).Item(8) Combo2.Text =
ds.Tables("db3").Rows(inc).Item(9)
EndSub
PrivateSub add_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles cmd_add.Click
Dim con AsNew OleDb.OleDbConnection con.ConnectionString =
"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\project\db3.mdb"
con.Open() sql = "insert into apartment values('"&
txt_apname.Text &"', '"& rft.Text &"', '"&
txt_ownername.Text &"','"& txt_age.Text &"','"&
combo1.Text &"','"& txt_totalflats.Text &"','"&
txt_totalblocks.Text &"','"& txt_totalnoofrentedflats.Text
&"','"& txt_vacantflats.Text &"','"& Combo2.Text
&"')" cmd = New OleDb.OleDbCommand(sql, con)
cmd.ExecuteNonQuery() MsgBox("Record Added") con.Close()
EndSub
PrivateSub delete_Click(ByVal sender As System.Object, ByVal e
As System.EventArgs) Handles cmd_delete.Click
con.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data
Source=C:\project\db3.mdb" con.Open() sql = "delete * from
apartment where apartmentname='"& txt_apname.Text &"'" cmd
= New OleDb.OleDbCommand(sql, con) cmd.ExecuteNonQuery()
MsgBox("records successfully deleted") con.Close()
EndSub
PrivateSub update_Click(ByVal sender As System.Object, ByVal e
As System.EventArgs) Handles cmd_update.Click
Dim con AsNew OleDb.OleDbConnection con.ConnectionString =
"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\project\db3.mdb"
con.Open() sql = "update apartment set apartmentname='"&
txt_apname.Text &"',facilities='"& rft.Text
&"',ownername='"& txt_ownername.Text &"',age='"&
txt_age.Text &"',sex='"& combo1.Text
&"',totalflats='"& txt_totalflats.Text
&"',toalblocks='"& txt_totalblocks.Text
&"',totalnoofrentedflats='"& txt_totalnoofrentedflats.Text
&"',vacantflats='"& txt_vacantflats.Text
&"',rentamount='"& Combo2.Text &"' where
apartmentname='"& txt_apname.Text &"'" cmd = New
OleDb.OleDbCommand(sql, con) cmd.ExecuteNonQuery() MsgBox("Record
update") con.Close()
EndSub
PrivateSub clear_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles cmd_clear.Click
txt_apname.Clear() rft.Clear() txt_ownername.Clear()
txt_age.Clear() txt_totalflats.Clear() txt_totalblocks.Clear()
txt_totalnoofrentedflats.Clear() txt_vacantflats.Clear()
EndSub
PrivateSub cmd_exit_Click(ByVal sender As System.Object, ByVal e
As System.EventArgs) Handles cmd_exit.Click
Close()
EndSub
PrivateSub cmd_next_Click(ByVal sender As System.Object, ByVal e
As System.EventArgs) Handles cmd_next.Click
If inc maxrows - 1 Then inc = inc + 1 navigate()Else MsgBox(" no
more rows", MsgBoxStyle.Exclamation)EndIf
EndSub
PrivateSub cmd_first_Click(ByVal sender As System.Object, ByVal
e As System.EventArgs) Handles cmd_first.Click
If inc 0 Then inc = 0 navigate()EndIf
EndSub
PrivateSub cmd_submit_Click(ByVal sender As System.Object, ByVal
e As System.EventArgs) Handles cmd_submit.Click
Form4.Show()
EndSub
PrivateSub cmd_last_Click(ByVal sender As System.Object, ByVal e
As System.EventArgs) Handles cmd_last.Click
If inc maxrows - 1 Then inc = maxrows - 1 navigate()EndIf
EnPrivateSub TextBox4_TextChanged(ByVal sender As System.Object,
ByVal e As System.EventArgs) Handles
txt_vacantflats.TextChanged
txt_vacantflats.Text = Val(txt_totalflats.Text) -
Val(txt_totalnoofrentedflats.Text)
EndSubEndClass
