Update SQL statement in vb.net - mysql

Question

I am new in VB.NET and as well as SQL. I want to update records in my database. I made a dummy in my database.
Example the values are: ID = 1, name=Cath, age=21
In my interface made in VB.NET, I update the values example : name = txtName.Text and age = txtAge.Text where ID = 1. This is in my main form. In my main form, I have "view" button informing that by clicking that button, new form would pop up and would view the updated values by the user. The program does not have any errors except that when I want to update again the values in my SQL, It record BUT when I click "view" button again, It will show the previous inputted by the user (the first update upon running the interface). What should be the solution?
This is my code:
Mainform:
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
SQLConnection.ConnectionString = ServerString
Try
If SQLConnection.State = ConnectionState.Closed Then
SQLConnection.Open()
MessageBox.Show("Successful connection")
Else
'SQLConnection.Close()
MessageBox.Show("Connection is closed")
End If
Catch ex As Exception
MsgBox(ex.ToString)
End Try
End Sub
Public Sub SaveNames(ByRef SQLStatement As String)
Dim cmd As MySqlCommand = New MySqlCommand
With cmd
.CommandText = SQLStatement
.CommandType = CommandType.Text
.Connection = SQLConnection
.ExecuteNonQuery()
End With
MsgBox("Successfully Added!")
End Sub
Private Sub cmdSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdSave.Click
Dim date_now As String
date_now = Format(dtpDate.Value, "yyyy-MM-dd")
Dim SQLStatement As String = "UPDATE people SET name='" & txtName.Text & "', date ='" & date_now & "' WHERE 1"
SaveNames(SQLStatement)
End Sub
Form 2: (where the updated data would be viewed)
Private Sub Form2_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
SQLConnection.ConnectionString = ServerString
Try
If SQLConnection.State = ConnectionState.Closed Then
SQLConnection.Open()
'====retrieve / update values in database=============
Dim SQLStatement As String = "SELECT name, date FROM people"
ViewInfos(SQLStatement)
Else
'SQLConnection.Close()
MessageBox.Show("Connection is closed")
End If
Catch ex As Exception
MsgBox(ex.ToString)
End Try
End Sub
Public Sub ViewInfos(ByRef SQLStatement As String)
Dim cmd As MySqlCommand = New MySqlCommand
With cmd
.CommandText = SQLStatement
.CommandType = CommandType.Text
.Connection = SQLConnection
.ExecuteNonQuery()
End With
'--read the records in database in phpmyadmin gui---
Dim myReader As MySqlDataReader = cmd.ExecuteReader
If myReader.Read Then
lblName.Text = myReader.GetString(0)
lblDate.Text = myReader.GetString(1)
End If
myReader.Close()
MsgBox("Records Successfully Retrieved")
End Sub
Any help would be appreciated. Thanks!

Answer 1

You are leaving your connection string open when you update sql, thus when you try to retrieve the data, your condition closes the connection without reading the data or updating your textboxes.

Answer 2

Take out the .ExecuteNonQuery() from the ViewInfos() method.
Refer to your forms via variables not via the form name:
Dim myForm as New Form2()
myForm.Show()