Emptying picturebox

[my822]

Im currently doing a entrance exam system. And I have a problem in adding abstract question

When I save data I get some error. But when I save the data with image in the picturebox it saves sucessfully. Can you help me in saving the data even the picturebox is empty?

[Mr.M]

Please post your code on what have you tried and where you are having a problem

[deceptikon]

When a picture box is empty, the Image property is null. I'd wager that however you're saving the data doesn't take into account that the image might be a null object.

You can either change how you save the data to account for nulls, or ensure that the picture box always has at least a default image.

[my822]

Private Sub saveButton_Click(sender As Object, e As EventArgs) Handles saveButton.Click
        Dim WA As Short

        con.Open()
        Using cmd As New SqlClient.SqlCommand("insert into quesTable(subject,question,A,B,C,D,answer,imagequestion) values('" & cbsubject.Text & "','" & rtboxquest.Text & "','" & achoicetb.Text & "','" & bchoicetb.Text & "','" & cchoicetb.Text & "','" & dchoicetb.Text & "','" & anstb.Text & "',@pboximage)", con)
            cmd.Parameters.Add(New SqlClient.SqlParameter("@pboximage", SqlDbType.Image)).Value = IO.File.ReadAllBytes(a.FileName)
            WA = cmd.ExecuteNonQuery
        End Using
        con.Close()

        If (WA > 0) Then
            MsgBox("The question has been saved!")
            showdata()
        End If

    End Sub

[my822]

Here is my code and Im always getting error in cmd.Parameters.Add(New SqlClient.SqlParameter("@pboximage", SqlDbType.Image)).Value = IO.File.ReadAllBytes(a.FileName) saying File not found exception was unhandled.

[Mr.M]

That says you need to use the

Try
' Your code here
Catch ex As Exception
' Handle the error here
End Try

or perhaps you can use the If statement and also check all the possibility errors that may occur

[deceptikon]

saying File not found exception was unhandled

Okay, what's a, and how have you populated/verified the FileName property? Clearly it doesn't refer to a valid file, so you need to figure out why. I wouldn't recommend simply wrapping the code in a try..catch block, because the exception suggests an underlying logic error.