Hi,
In my database, I have a table with a field called KeyfobNo its data type is numeric(18,0).
Now, I am trying to have a function to check if the keyfob entered is not numeric. This worked fine..
The problem is when I click the Search button and enter text in txtsrchKyfb abd CLICK SEARCH button I receive the error provider message "Only numerical values accepted". Now when I use KEYUP when I entered Text i receive an error - Error Converting data type varchar to numeric
Why?
Just for info -
Search Click Event
KeyUp event
The error is highlighted in the code below in keyup event ...
Thank you
In my database, I have a table with a field called KeyfobNo its data type is numeric(18,0).
Now, I am trying to have a function to check if the keyfob entered is not numeric. This worked fine..
Code:
Private Sub txtSrchKyfb_Validating(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles txtSrchKyfb.Validating
If Not IsNumeric(txtSrchKyfb.Text) And txtSrchKyfb.Text <> "" Then
' Cancel the event moving off of the control.
e.Cancel = True
' Select the offending text.
txtSrchKyfb.Select(0, txtSrchKyfb.Text.Length)
' Give the ErrorProvider the error message to display.
ErrorProvider.SetError(txtSrchKyfb, "Only numerical values accepted")
End If
End SubCode:
Private Sub txtSrchKyfb_Validated(ByVal sender As Object, ByVal e As System.EventArgs) Handles txtSrchKyfb.Validated
ErrorProvider.SetError(txtSrchKyfb, "")
End SubWhy?
Just for info -
Search Click Event
Code:
Private Sub btnSearch_Click(sender As Object, e As EventArgs) Handles btnSearch.Click
Dim query As String
Dim cmd As New SqlCommand
Dim conn As SqlConnection = GetDbConnection()
Call ClearRecords()
If txtSrchKyfb.Text = "" Then
MsgBox("Please enter a keyfob number to search", MsgBoxStyle.Information, "Customer Tracker")
Else
Try
query = "SELECT keyfobNo FROM dbo.tblKeyfob WHERE KeyfobNo ='" & _
txtSrchKyfb.Text & "' "
cmd = New SqlCommand(query, conn)
cmd.ExecuteNonQuery()
Catch ex As Exception
MsgBox(ex.Message, MsgBoxStyle.Information, "Customer Tracker")
End Try
Dim saved_kyfb As String
saved_kyfb = cmd.ExecuteScalar()
If saved_kyfb = "" Then
MessageBox.Show("This keyfob number doesn't exist in the database", "Customer Tracker", MessageBoxButtons.OK, MessageBoxIcon.Information)
End If
Call PopulateKeyfobDetails()
End If
End SubCode:
Private Sub txtSrchKyfb_KeyUp(sender As Object, e As KeyEventArgs) Handles txtSrchKyfb.KeyUp
Dim query As String
Dim cmd As New SqlCommand
Dim conn As SqlConnection = GetDbConnection()
If e.KeyCode = Keys.Enter Then
Call ClearRecords()
If txtSrchKyfb.Text = "" Then
MsgBox("Please enter a keyfob number to search", MsgBoxStyle.Information, "Customer Tracker")
Else
Try
query = "SELECT keyfobNo FROM dbo.tblKeyfob WHERE KeyfobNo ='" & _
txtSrchKyfb.Text & "' "
cmd = New SqlCommand(query, conn)
cmd.ExecuteNonQuery()
Catch ex As Exception
MsgBox(ex.Message, MsgBoxStyle.Information, "Customer Tracker")
End Try
Dim kyfb_Saved As String
kyfb_Saved = cmd.ExecuteScalar()
If kyfb_Saved = "" Then
MessageBox.Show("This keyfob number doesn't exist in the database", "Customer Tracker", MessageBoxButtons.OK, MessageBoxIcon.Information)
End If
Call PopulateKeyfobDetails()
End If
End If
End SubCode:
Dim kyfb_Saved As String
kyfb_Saved = cmd.ExecuteScalar()