This document contains Visual Basic code for buttons that search for, add, and delete student records from a database. The search button checks if a student record exists with a matching ID and enables or disables text boxes based on the results. The add button inserts a new record into the database. The delete button removes an existing record. The code handles validating data and displaying messages to the user.

1. Alumno: Joseline Marquez Flores
Plantel: Conalep Zacualpan Plantel
101
Modulo:Elaboración y Mantenimiento de
Sistemas de Información.
Profe: Agustín Hernández Delgado.
Eapecialidad: Informatica
Grupo. 606

2. Este es mi boton de buscar, se encarga de encontrar los datos
pedidos por el programa
PrivateSub Button1_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button1.Click
REM CONSULTAS
Dim mitabla AsDataTable =
CODREP_________________________________DataSet.ALUMNO
Dim cfilas AsDataRowCollection = mitabla.Rows
Dim nuevafila AsDataRow
Dim i AsInteger
Dim n AsInteger
n = ALUMNOBindingSource.Count()
Dim bandera AsBoolean
bandera = True
Dim tamaño AsInteger
tamaño = ALUMNOBindingSource.Count()
i = 1
If (tamaño = 0) Then
Else
Do
If (Trim(MATRICULATextBox.Text) = Trim(TextBox1.Text)) Then
bandera = False
Else
ALUMNOBindingSource.MoveNext()
i = i + 1
EndIf
LoopWhile (bandera = TrueAnd i <= tamaño)
EndIf
If (bandera = False) Then
ID_ALUMNOTextBox.Enabled = False
ID_ALUMNOTextBox.Visible = False
NOMBRETextBox.Enabled = False
NOMBRETextBox.Visible = False
APELLIDOSTextBox.Enabled = False
APELLIDOSTextBox.Visible = False
MATRICULATextBox.Enabled = False
MATRICULATextBox.Visible = False
ESPECIALIDADTextBox.Enabled = False
ESPECIALIDADTextBox.Visible = False

3. TURNOTextBox.Enabled = False
TURNOTextBox.Visible = False
GRUPOTextBox.Enabled = False
GRUPOTextBox.Visible = False
TELEFONOTextBox.Enabled = False
TELEFONOTextBox.Visible = False
CORREOTextBox.Enabled = False
CORREOTextBox.Visible = False
MsgBox("Ya existe")
TextBox1.Text = ""
TextBox1.Focus()
Else
MsgBox("Introduce datos")
nuevafila = mitabla.NewRow
cfilas.Add(nuevafila)
ALUMNOBindingSource.MoveLast()
ID_ALUMNOTextBox.Enabled = True
ID_ALUMNOTextBox.Visible = True
NOMBRETextBox.Enabled = True
NOMBRETextBox.Visible = True
APELLIDOSTextBox.Enabled = True
APELLIDOSTextBox.Visible = True
MATRICULATextBox.Enabled = True
MATRICULATextBox.Visible = True
ESPECIALIDADTextBox.Enabled = True
ESPECIALIDADTextBox.Visible = True
TURNOTextBox.Enabled = True
TURNOTextBox.Visible = True
GRUPOTextBox.Enabled = True
GRUPOTextBox.Visible = True
TELEFONOTextBox.Enabled = True
TELEFONOTextBox.Visible = True
CORREOTextBox.Enabled = True
CORREOTextBox.Visible = True
nuevafila(1) = UCase(NOMBRETextBox.Text)
nuevafila(2) = UCase(APELLIDOSTextBox.Text)
nuevafila(3) = UCase(TextBox1.Text)
nuevafila(4) = UCase(ESPECIALIDADTextBox.Text)
nuevafila(5) = UCase(TURNOTextBox.Text)

4. nuevafila(6) = UCase(GRUPOTextBox.Text)
nuevafila(7) = UCase(TELEFONOTextBox.Text)
nuevafila(8) = UCase(CORREOTextBox.Text)
EndIf
EndSub
Este es mi boton de grabar , guarda los documentos insertados.
PrivateSub Button2_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button2.Click
If (CODREP_________________________________DataSet.HasChanges)
Then
Me.Validate()
Me.ALUMNOBindingSource.EndEdit()
Me.ALUMNOTableAdapter.Update(Me.CODREP________________________
_________DataSet.ALUMNO)
MsgBox("Cargando")
TextBox1.Text = ""
TextBox1.Focus()
ID_ALUMNOTextBox.Enabled = False
NOMBRETextBox.Enabled = False
APELLIDOSTextBox.Enabled = False
MATRICULATextBox.Enabled = False
ESPECIALIDADTextBox.Enabled = False
TURNOTextBox.Enabled = False
GRUPOTextBox.Enabled = False
TELEFONOTextBox.Enabled = False
CORREOTextBox.Enabled = False
EndIf
EndSub

5. Este es el de eliminar, es el que se encarga de dar de baja a un
alumno ya no existente
PrivateSub Button1_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button1.Click
REM CONSULTAS
Dim mitabla AsDataTable =
CODREP_________________________________DataSet.ALUMNO
Dim cfilas AsDataRowCollection = mitabla.Rows
Dim nuevafila AsDataRow
Dim i AsInteger
Dim n AsInteger
n = ALUMNOBindingSource.Count()
Dim bandera AsBoolean
bandera = True
Dim tamaño AsInteger
tamaño = ALUMNOBindingSource.Count()
i = 1
If (tamaño = 0) Then
Else
Do
If (Trim(MATRICULATextBox.Text) = Trim(TextBox1.Text)) Then
bandera = False
Else
ALUMNOBindingSource.MoveNext()
i = i + 1
EndIf
LoopWhile (bandera = TrueAnd i <= tamaño)
EndIf
If (bandera = False) Then
ID_ALUMNOTextBox.Enabled = False
ID_ALUMNOTextBox.Visible = False
NOMBRETextBox.Enabled = False
NOMBRETextBox.Visible = False
APELLIDOSTextBox.Enabled = False
APELLIDOSTextBox.Visible = False
MATRICULATextBox.Enabled = False
MATRICULATextBox.Visible = False

6. ESPECIALIDADTextBox.Enabled = False
ESPECIALIDADTextBox.Visible = False
TURNOTextBox.Enabled = False
TURNOTextBox.Visible = False
GRUPOTextBox.Enabled = False
GRUPOTextBox.Visible = False
TELEFONOTextBox.Enabled = False
TELEFONOTextBox.Visible = False
CORREOTextBox.Enabled = False
CORREOTextBox.Visible = False
MsgBox("Ya existe")
TextBox1.Text = ""
TextBox1.Focus()
Else
MsgBox("Nuevos datos")
nuevafila = mitabla.NewRow
cfilas.Add(nuevafila)
ALUMNOBindingSource.MoveLast()
ID_ALUMNOTextBox.Enabled = True
ID_ALUMNOTextBox.Visible = True
NOMBRETextBox.Enabled = True
NOMBRETextBox.Visible = True
APELLIDOSTextBox.Enabled = True
APELLIDOSTextBox.Visible = True
MATRICULATextBox.Enabled = True
MATRICULATextBox.Visible = True
ESPECIALIDADTextBox.Enabled = True
ESPECIALIDADTextBox.Visible = True
TURNOTextBox.Enabled = True
TURNOTextBox.Visible = True
GRUPOTextBox.Enabled = True
GRUPOTextBox.Visible = True
TELEFONOTextBox.Enabled = True
TELEFONOTextBox.Visible = True
CORREOTextBox.Enabled = True
CORREOTextBox.Visible = True
nuevafila(1) = UCase(NOMBRETextBox.Text)
nuevafila(2) = UCase(APELLIDOSTextBox.Text)
nuevafila(3) = UCase(TextBox1.Text)
nuevafila(4) = UCase(ESPECIALIDADTextBox.Text)

7. nuevafila(5) = UCase(TURNOTextBox.Text)
nuevafila(6) = UCase(GRUPOTextBox.Text)
nuevafila(7) = UCase(TELEFONOTextBox.Text)
nuevafila(8) = UCase(CORREOTextBox.Text)
EndIf
EndSub
PrivateSub Button2_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button2.Click
If (CODREP_________________________________DataSet.HasChanges)
Then
Me.Validate()
Me.ALUMNOBindingSource.EndEdit()
Me.ALUMNOTableAdapter.Update(Me.CODREP________________________
_________DataSet.ALUMNO)
MsgBox("Cargando")
TextBox1.Text = ""
TextBox1.Focus()
ID_ALUMNOTextBox.Enabled = False
NOMBRETextBox.Enabled = False
APELLIDOSTextBox.Enabled = False
MATRICULATextBox.Enabled = False
ESPECIALIDADTextBox.Enabled = False
TURNOTextBox.Enabled = False
GRUPOTextBox.Enabled = False
TELEFONOTextBox.Enabled = False
CORREOTextBox.Enabled = False
EndIf
EndSub
PrivateSub SALIR_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles SALIR.Click
End
EndSub
PrivateSub Button3_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs)
EndSub
PrivateSub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e
As System.EventArgs) Handles TextBox1.TextChanged
TextBox1.Focus()
EndSub

8. PrivateSub Button2_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button2.Click
If (CODREP_________________________________DataSet.HasChanges)
Then
Me.Validate()
Me.ALUMNOBindingSource.EndEdit()
Me.ALUMNOTableAdapter.Update(Me.CODREP________________________
_________DataSet.ALUMNO)
MsgBox("Cargando")
TextBox1.Text = ""
TextBox1.Focus()
ID_ALUMNOTextBox.Enabled = False
NOMBRETextBox.Enabled = False
APELLIDOSTextBox.Enabled = False
MATRICULATextBox.Enabled = False
ESPECIALIDADTextBox.Enabled = False
TURNOTextBox.Enabled = False
GRUPOTextBox.Enabled = False
TELEFONOTextBox.Enabled = False
CORREOTextBox.Enabled = False
EndIf
EndSub