This document provides a tutorial on using Visual Basic .NET 2012 with a focus on filtering data through string or character searches. It includes sample code and procedures for various button click events, allowing beginners to work with a pharmaceuticals dataset. The tutorial emphasizes data validation and updating records within a Windows Forms application.

1. Visual BASIC .NET 2012
PART 24-filter using string or character search vb.net
Dr. GIRIJA NARASIMHAN 1
This slides are available http://slideshare.net /nbgirija

2. Dr. GIRIJA NARASIMHAN 2
This tutorial only for beginners , those
who don’t have any knowledge about
any programming language skill and
application design.

3. Dr.GIRIJA NARASIMHAN 3
Public Class Form1
Private Sub PharmaBindingNavigatorSaveItem_Click(sender As Object, e As EventArgs)
Handles PharmaBindingNavigatorSaveItem.Click
Me.Validate()
Me.PharmaBindingSource.EndEdit()
Me.TableAdapterManager.UpdateAll(Me.GirijasetbDataSet)
End Sub
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
'TODO: This line of code loads data into the 'GirijasetbDataSet.pharma' table. You can
move, or remove it, as needed.
Me.PharmaTableAdapter.Fill(Me.GirijasetbDataSet.pharma)
End Sub
'last record button
Private Sub Button5_Click(sender As Object, e As EventArgs) Handles Button5.Click
PharmaBindingSource.MoveLast()
End Sub

4. Dr.GIRIJA NARASIMHAN 4
'tax_price button
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
If CostTextBox.Text > 5 Then
TextBox1.Text = Val(2)
TextBox2.Text = Val(CostTextBox.Text) + Val(TextBox1.Text)
Else
TextBox1.Text = Val(1)
TextBox2.Text = Val(CostTextBox.Text) + Val(TextBox1.Text)
End If
End Sub
Private Sub CostTextBox__leave(sender As Object, e As EventArgs) Handles
CostTextBox.TextChanged
Me.Validate()
Me.PharmaBindingSource.EndEdit()
Me.TableAdapterManager.UpdateAll(Me.GirijasetbDataSet)
End Sub

5. Dr.GIRIJA NARASIMHAN 5
'new button
Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
PharmaBindingSource.AddNew()
End Sub
Private Sub BindingNavigatorMovePreviousItem_Click(sender As Object, e As
EventArgs) Handles BindingNavigatorMovePreviousItem.Click
End Sub
'update button
Private Sub Button3_Click(sender As Object, e As EventArgs) Handles Button3.Click
Me.Validate()
Me.PharmaBindingSource.EndEdit()
Me.TableAdapterManager.UpdateAll(Me.GirijasetbDataSet)
End Sub

6. Dr.GIRIJA NARASIMHAN 6
'find button
Private Sub Button4_Click(sender As Object, e As EventArgs) Handles Button4.Click
PharmaBindingSource.Filter = "COST <' " & 4 & " ' "
End Sub
'string search button
Private Sub Button6_Click(sender As Object, e As EventArgs) Handles Button6.Click
PharmaBindingSource.Filter = "pharma_name like '" & TextBox3.Text & "*'"
End Sub
End Class

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8. Dr.GIRIJA NARASIMHAN 8
Public Class Form2
Private Sub PharmaBindingNavigatorSaveItem_Click(sender As Object, e As EventArgs)
Handles PharmaBindingNavigatorSaveItem.Click
Me.Validate()
Me.PharmaBindingSource.EndEdit()
Me.TableAdapterManager.UpdateAll(Me.GirijasetbDataSet)
End Sub
Private Sub Form2_Load(sender As Object, e As EventArgs) Handles MyBase.Load
'TODO: This line of code loads data into the 'GirijasetbDataSet.pharma' table. You can
move, or remove it, as needed.
Me.PharmaTableAdapter.Fill(Me.GirijasetbDataSet.pharma)
End Sub
Private Sub TextBox1_TextChanged(sender As Object, e As EventArgs) Handles
TextBox1.TextChanged
PharmaBindingSource.Filter = "pharma_name like '" & TextBox1.Text & "*'"
End Sub
End Class

9. Dr.GIRIJA NARASIMHAN 9