VB-106 : Program using ADO Data Control

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Before going to do any Database Program ,Click here to  understand Database Concepts thoroughly.


That is , Creating Database within VB Platform

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This program is connected with the below given 2 programs also...
So , You must refer them while doing the third Program.
They are ;

1. How to see Data in Grid
2. To create Reports using Data Reports

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(A) Program  Design :

1. Open a Form. (Form1 ) - Add 10 labels , 10 textboxes , 3 command buttons and one ADO Data Control.
2. Then , add a MDI Form .This is to create a Menu in MDI Form.
3. Now select Project--> Add Form to add another form (Form2) Add 10 labels , 10 textboxes , 5 command buttons and one ADO Data Control.

Note that , in this project , there is 2 Forms and One MDI Form .

Details of these 2 Forms and one MDI Form is  given Below : 

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Program Design (1) :   Form1

Add 10 Labels , 10 TextBoxes , 3 Command Buttons and One ADO Data Control to Form1 , as given below ;
(Select , Project--> Components-->Microsoft ADO Data Control 6.0 : To get the ADODC into our Form)

(Set the Visible Property of the ADO Data Control to False ) .Note that , by doing so , this will not appear while we run Form1.
That is , like this :

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Program Design (2) :   MDI Form

(Project--> Add MDI_

Then select Tools--> Menu Editor . Create a Menu as per shown below:

(Refer  Design a Menu Bar, if you don't know how to create a Menu Bar)

The created Menu Bar in MDI form will look like this :

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Program Design (3) :   Form2

Select , Project --> Add Form to add another form ..

Add 10 Labels , 10 TextBoxes ,5 Command Buttons and One ADO Data Control to Form1 , as given below ;
(Select , Project--> Components-->Microsoft ADO Data Control 6.0 : To get the ADODC into our Form)

(Set the Visible Property of the ADO Data Control to False ) .Note that , by doing so , this will not appear while we run Form2.

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(B) To Design a Database for this Program :

Now we are going to create a Database as per the above given details :
We are creating this in MS-Access.
(You can Refer Linking to Database also to know How to create a Database in Access)

• Open MS Access
• Select Blank Database , give a name and click Create(Here , we are giving a file name - Student)
• Create table in Design view
• Give Details 

It will look like this :

Then File --> Save ( Note that , the Table Name is Student)


(C) Now,we are going to connect this Database & VB


(1) Connecting Form-1 :

• Select  Form1
• Right Click on ADODC to get its Properties

(Refer Creating Database within VB Platform and note Point Number (4) , "How to connect ADO DataControl with Database" , to know more about ADODC Properties)

• Now , we will get a Property Page , select Use Connection String and  Click Build 
• And we will lead to Data Link Property pages , and select Microsoft Jet 4.0 OLEDB Provider and Click Next
• Select the created Database Name (Here, we created Student) , and Click Test Connection to know whether the connection is right.Click OK
• Again , back to Property Page , select Record Sourse , and select 2-adCmdTable and select table (Student)
• Apply , OK

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• Now select The 10 Text Boxs of Form1
• Change all of its DataSource Property to Adodc1 
• Now we have to select each TextBoxes separately and change all of its DataField Properties to Name,Course..etc.as given below:

Text	Data Field Property	Data Source property
Text1	Name	Adodc1
Text2	Name of Father
Text3	House
Text4	Place
Text5	District
Text6	Admission Number
Text7	Course
Text8	Date
Text9	DOB
Text10	Phone

(2) Connecting Form-2 :

Repeat the above given steps in Form 2 also

(D) Now,we are going to write Code :


(1) Code for MDI Form :

Private Sub mnuadd_Click() Form1.Show End Sub

Private Sub mnuexit_Click() End End Sub

Private Sub mnuview_Click() Form2.Show End Sub

(2) Code for Form1 :

Private Sub Command1_Click() Adodc1.Recordset.AddNew Command1.Enabled = False Command2.Enabled = True End Sub

Private Sub Command2_Click() Adodc1.Recordset.Update Command1.Enabled = True Command2.Enabled = False End Sub

Private Sub Command3_Click() Unload Form1 End Sub

Private Sub Form_Load() Command2.Enabled = False End Sub

(3) Code for Form2 :

Private Sub Command1_Click() Adodc1.Recordset.MovePrevious If Adodc1.Recordset.BOF = True Then Adodc1.Recordset.MoveFirst Command1.Enabled = False End If Command2.Enabled = True End Sub

Private Sub Command2_Click() Command1.Enabled = True Adodc1.Recordset.MoveNext If Adodc1.Recordset.EOF = True Then Adodc1.Recordset.MoveLast Command2.Enabled = False End If End Sub

Private Sub Command3_Click() Adodc1.Recordset.Update End Sub

Private Sub Command4_Click() Adodc1.Recordset.Delete End Sub

Private Sub Command5_Click() Unload Form2 End Sub

Private Sub Form_Load() Command1.Enabled = False End Sub

(E) Run the Project :

This is the main menu..




Click Student and the sub menus Add and View will appear . 

Click Add
Then Add form will appear as ;

Add Details and Click Save...
Do this for any number of students , as you want.
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Again ,Click Student and the sub menus Add and View will appear . 

Click View.
Then another Form will appear as ;

We can see and edit the saved details of each students , by selecting the appropriate Commands..

Hope ,you understand the Concept...........
Feel free to write to me your opinions......

(E) Errors :

If found any errors while running your VB program, or want to put your comment about any  program , please click Comment section , to post

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