Value in textbox is always the same on update statement - asp.net

Question

I select values from database into textboxes on page load. Then when I change them and want to update the database, values are same as original values. For example I select name Robin Hood into TextBoxName, change it to Bill Gates, but the value of textbox on updating is still Robin Hood. How can I fix this behavior?
However this applies only to textboxes with TextMode="SingleLIne" Or "MultiLine". When textbox has TextMode="Url" for example, it works fine.
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
'Bind
Try
Using conn As New SqlConnection(connStr)
Dim cmd As SqlCommand = conn.CreateCommand
cmd.CommandText = "SELECT * FROM Profiles WHERE (ProfileId = #ProfileId)"
cmd.Parameters.AddWithValue("#ProfileId", Request.QueryString("id"))
conn.Open()
Dim rd As SqlDataReader = cmd.ExecuteReader()
While rd.Read()
ProfileImage.ImageUrl = rd.Item("ProPicUrl")
txtName.Text = rd.Item("Name")
txtCity.Text = rd.Item("City")
drpRegion.Items.FindByText(rd.Item("Region")).Selected = True
txtAge.Text = rd.Item("Age")
RadioButtonList1.Items.FindByText(rd.Item("Sex")).Selected = True
txtLink.Text = rd.Item("Link")
txtPhone.Text = rd.Item("Phone")
txtAbout.Text = rd.Item("About")
txtMotto.Text = rd.Item("Motto")
txtGoal.Text = rd.Item("Goal")
txtHobby.Text = rd.Item("Hobby")
End While
conn.Close()
End Using
Catch ex As Exception
End Try
End Sub
Protected Sub btnSave_Click(sender As Object, e As EventArgs) Handles btnSave.Click
Dim fileUrl As String = "~/ProPics/"
Dim name As String = txtName.Text
Try
'Save profile picture
Try
If FileUpload1.HasFile Then
fileUrl += FileUpload1.FileName
FileUpload1.SaveAs(Server.MapPath(fileUrl))
Else
fileUrl = ProfileImage.ImageUrl
End If
Catch ex As Exception
UploadMessage.Text = "Nastala chyba při nahrávání obrázku." + vbCrLf + "Chybové hlášení: " + ex.Message
End Try
Using conn As New SqlConnection(connStr)
Dim cmd As SqlCommand = conn.CreateCommand
cmd.CommandText = "UPDATE Profiles SET Name = #Name, ProPicUrl = #Url, City = #City, Region = #Region, Age = #Age, Sex = #Sex, Link = #Link, Phone = #Phone, About = #About, Motto = #Motto, Goal = #Goal, Hobby = #Hobby WHERE (ProfileId = #ProfileId)"
cmd.Parameters.AddWithValue("#Url", fileUrl)
cmd.Parameters.AddWithValue("#Name", name)
cmd.Parameters.AddWithValue("#City", txtCity.Text)
cmd.Parameters.AddWithValue("#Region", drpRegion.SelectedItem.Text)
cmd.Parameters.AddWithValue("#Age", txtAge.Text)
cmd.Parameters.AddWithValue("#Sex", RadioButtonList1.SelectedItem.Text)
cmd.Parameters.AddWithValue("#Phone", txtPhone.Text)
cmd.Parameters.AddWithValue("#Link", txtLink.Text)
cmd.Parameters.AddWithValue("#About", txtAbout.Text)
cmd.Parameters.AddWithValue("#Motto", txtMotto.Text)
cmd.Parameters.AddWithValue("#Goal", txtGoal.Text)
cmd.Parameters.AddWithValue("#Hobby", txtHobby.Text)
cmd.Parameters.AddWithValue("#ProfileId", Request.QueryString("id"))
conn.Open()
cmd.ExecuteNonQuery()
conn.Close()
'Refresh page
Response.Redirect(Request.RawUrl)
End Using
Catch ex As Exception
End Try
End Sub

Answer 1

You need to add a check for IsPostBack property of the page when you execute code in the Page_Load event.
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
if Not PostBack Then
...... code to execute only the first time the Page_Load is called
Try
End Try
Catch ex As Exception
End Try
End If
.. code to execute every time....
End Sub
When your user clicks on a button with Runat=Server then the button calls the event on the server side code, but this cause a new call to Page_Load.
Actually your code reloads from the database the original value everytime the Page_Load event executes and thus your button click event code sees the original value from the database instead of the modified value.
This article on the Page Life Cycle could be useful here