Database connectivity with data reader by varun tiwari
3
Database Connectivity with Data Reader Figure 17.5 Step 1.Create a database Employee in Ms Access 2003/2007/2010/2013 and then create a table Emp. Field of EMP table is: Ecode, Ename, Eage, Edesig, and Esalary. Now adding the data into the table. Step 2. Open Visual Studio .Net 2008/2010/2012. Step 3. Click on view menu and open server explorer. Step 4. Right click on data connecons then select add connecon. Now select data source Microsoſt Access Database file and then select the database file name. Where the database is stored and then click ok buon. Step 5. When the connecon is created then copy the path of file in properes window. Path is this: "Provider=Microsoft.Jet.OLEDB.4.0;DataSource=C:\Users\Tiwari\Desktop\Employee.mdb") Then design a form, coding in a form and then run it. Example 15.2 Imports System.Data.OleDb Public Class Form2 Dim con As OleDbConnection Dim cmd As OleDbCommand Dim dr As OleDbDataReader Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click TextBox1.Clear() TextBox2.Clear() TextBox3.Clear() TextBox4.Clear() TextBox5.Clear() End Sub Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click 'Save Record Try
-
Upload
comm-it-affiliated-ggsip-university-delhi -
Category
Technology
-
view
748 -
download
1
Transcript of Database connectivity with data reader by varun tiwari
Database Connectivity with Data Reader
Figure 17.5
Step 1.Create a database Employee in Ms Access 2003/2007/2010/2013 and then create a table Emp. Field
of EMP table is: Ecode, Ename, Eage, Edesig, and Esalary. Now adding the data into the table.
Step 2. Open Visual Studio .Net 2008/2010/2012. Step 3. Click on view menu and open server explorer. Step 4. Right click on data connections then select add connection. Now select data source Microsoft Access Database file and then select the database file name. Where the database is stored and then click ok button. Step 5. When the connection is created then copy the path of file in properties window. Path is this: "Provider=Microsoft.Jet.OLEDB.4.0;DataSource=C:\Users\Tiwari\Desktop\Employee.mdb")
Then design a form, coding in a form and then run it.
Example 15.2 Imports System.Data.OleDb
Public Class Form2
Dim con As OleDbConnection
Dim cmd As OleDbCommand
Dim dr As OleDbDataReader
Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button4.Click
TextBox1.Clear()
TextBox2.Clear()
TextBox3.Clear()
TextBox4.Clear()
TextBox5.Clear()
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button1.Click
'Save Record
Try
con = New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data
Source=C:\Users\Tiwari\Desktop\Employee.mdb")
con.Open()
cmd = New OleDbCommand("insert into Emp values('" & TextBox1.Text
& "','" & TextBox2.Text & "','" & TextBox3.Text & "','" & TextBox4.Text &
"','" & TextBox5.Text & "') ", con)
cmd.ExecuteNonQuery()
MessageBox.Show("Record Inserted", "Updated",
MessageBoxButtons.OK, MessageBoxIcon.Hand, MessageBoxDefaultButton.Button1)
Catch ex As Exception
MsgBox(ex.Message)
End Try
End Sub
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button3.Click
'Update Record
Try
con = New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data
Source=C:\Users\Tiwari\Desktop\Employee.mdb")
con.Open()
cmd = New OleDbCommand("Update Emp set Ecode='" & TextBox1.Text &
"',Ename='" & TextBox2.Text & "',Eage='" & TextBox3.Text & "',Edesig='" &
TextBox4.Text & "', Esalary= '" & TextBox5.Text & "' where Ecode='" &
TextBox1.Text & "' ", con)
cmd.ExecuteNonQuery()
dr = cmd.ExecuteReader
MessageBox.Show("Record Updated", "Updated",
MessageBoxButtons.OK, MessageBoxIcon.Hand, MessageBoxDefaultButton.Button1)
Catch ex As Exception
MsgBox(ex.Message)
End Try
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button2.Click
'Delete Record
Try
con = New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data
Source=C:\Users\Tiwari\Desktop\Employee.mdb")
con.Open()
cmd = New OleDbCommand("delete from Emp where Ecode='" &
TextBox1.Text & "'", con)
cmd.ExecuteNonQuery()
dr = cmd.ExecuteReader
MessageBox.Show("Record Deleted", "Deleted",
MessageBoxButtons.OK, MessageBoxIcon.Hand, MessageBoxDefaultButton.Button1)
Catch ex As Exception
MsgBox(ex.Message)
End Try
End Sub
Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button5.Click
'Show Record
Try
con = New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data
Source=C:\Users\Tiwari\Desktop\Employee.mdb")
con.Open()
cmd = New OleDbCommand("select * from Emp", con)
dr = cmd.ExecuteReader
While dr.Read
TextBox1.Text = dr(0)
TextBox2.Text = dr(1)
TextBox3.Text = dr(2)
TextBox4.Text = dr(3)
TextBox5.Text = dr(4)
End While
Catch ex As Exception
MsgBox(ex.Message)
End Try
End Sub
Private Sub Form2_Load(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles MyBase.Load
Try
con = New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data
Source=C:\Users\Tiwari\Desktop\Employee.mdb")
con.Open()
cmd = New OleDbCommand("select * from Emp", con)
dr = cmd.ExecuteReader
While dr.Read
ListBox1.Items.Add(dr(1))
End While
Catch ex As Exception
MsgBox(ex.Message)
End Try
End Sub
Private Sub Button6_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button6.Click
Application.Exit()
End Sub
End Class
