Hello all,

I have encountered an interesting issue that I can not seem to resolve.

I have a textbox and a rtfbox on one form that the enter key is being ignored. When I create a new textbox on that form the problemoccurs thereas well. However, when I create a new form in the same project, the enter key starts working with any multiline text boxes. I deleted all code at the form level thathandles keyboard processing and set keypreview to false but the problem does not go away. I verified multiline is set to true on both the textbox and the rtfbox. I even tried adding code to the key_up event for the form that would test for the return key and the event does see it.

So, I am a complete loss as to what could could be causing this issue. Any help would be apreciated.

Hi cbGifford,

I have tested the code and found that the KeyDown/KeyUp event of the RichTextBox/TextBox is not fired, but the Click event of the btnAddIngredient button is fired. Please feel free to tell me if this is not the issue you met.

The root cause of this issue is that the AcceptButton property of the form is set to btnAddIngredient, so when we press the Enter key, the click event of the btnAddIngredient button would be fired and the Enter key would not be received by other controls on the form.

Based on my understanding, you want to have the user be able to enter ‘\n�if the current control is a RichTextBox/TextBox and its Multiline property is true, otherwise the click event handler of the default button would be fired. To meet this needs, we need to set the AcceptButton property of the form to none and add some code in the beginning of the KeyUp event handler of the form. This is a code snippet:

    Private Sub frmCookbook_KeyUp(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyUp

        'Cope with the enter.
        If e.KeyCode = Keys.Enter Then
            Dim textCtrl As TextBoxBase = TryCast(Me.ActiveControl, TextBoxBase)
            'If the current control is not of type TextBoxBase and it is not multiline,
            'the click event of the default button would be fired.
            If textCtrl Is Nothing Then
                btnAddIngredient_Click(btnAddIngredient, Nothing)
            Else
                If Not textCtrl.Multiline Then
                    btnAddIngredient_Click(btnAddIngredient, Nothing)
                End If
            End If
        End If

        'Other code
    End Sub

Let me know if this does not help.
Aland Li

Hi Aland,

Thank you so very much! That solved the issue!

To summarize:

The acceptbutton property when set intercepts the enter key from the keyboard event and then fires the click event for the button. This effectively disables all multiline text boxes on the form from being able to process the enter key.

Again, thank you for your assistance.

Hi Aland,

I am not overriding any methods and the form is not derived from another form. I searched both the form's code as well as the designer code for the mentioned methods and they are not present. Between the two forms, there is over 5,000 lines of code. I got an error when I tried pasting them as two code blocks in this reply.

I will try to make two separate replies with the code from each file that you requested.

I am unable to add the code, I get an msgbox that has a yellow triangle with no message in it. I am assuming it is to big. The designer file is 3800 lines and my code is over 1400 lines. Is there a paticular section that you would like to see or is there a way I can add the two files as an attachment to the thread?

Thank you for any help you can give me on this.

Hi,

We are changing the issue type to “General Discussion�because you have not followed up with the necessary information. If you have more time to look at the issue and provide more information, please feel free to change the issue type back to “Question�by opening the Options list at the top of the post window, and changing the type. If the issue is resolved, we will appreciate it if you can share the solution so that the answer can be found and used by other community members having similar questions.

Aland Li

Hi cbGifford,

Sorry for not answering the question below at first:
I am unable to add the code, I get an msgbox that has a yellow triangle with no message in it. I am assuming it is to big. The designer file is 3800 lines and my code is over 1400 lines. Is there a paticular section that you would like to see or is there a way I can add the two files as an attachment to the thread?

Could you please email the code to me: alala666888@hotmail.com.

Regards,
Aland Li

---

Please mark the replies as answers if they help and unmark if they don't. This can be beneficial to other community members reading the thread.

check if u have supressed enter key in keydown event..

Did not get the alert for some reason that you responded, sorry. I sent them in a zip file just now

Hi cbGifford,

I have tested the code and found that the KeyDown/KeyUp event of the RichTextBox/TextBox is not fired, but the Click event of the btnAddIngredient button is fired. Please feel free to tell me if this is not the issue you met.

The root cause of this issue is that the AcceptButton property of the form is set to btnAddIngredient, so when we press the Enter key, the click event of the btnAddIngredient button would be fired and the Enter key would not be received by other controls on the form.

Based on my understanding, you want to have the user be able to enter ‘\n�if the current control is a RichTextBox/TextBox and its Multiline property is true, otherwise the click event handler of the default button would be fired. To meet this needs, we need to set the AcceptButton property of the form to none and add some code in the beginning of the KeyUp event handler of the form. This is a code snippet:

    Private Sub frmCookbook_KeyUp(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyUp

        'Cope with the enter.
        If e.KeyCode = Keys.Enter Then
            Dim textCtrl As TextBoxBase = TryCast(Me.ActiveControl, TextBoxBase)
            'If the current control is not of type TextBoxBase and it is not multiline,
            'the click event of the default button would be fired.
            If textCtrl Is Nothing Then
                btnAddIngredient_Click(btnAddIngredient, Nothing)
            Else
                If Not textCtrl.Multiline Then
                    btnAddIngredient_Click(btnAddIngredient, Nothing)
                End If
            End If
        End If

        'Other code
    End Sub

Let me know if this does not help.
Aland Li

Hi Aland,

Thank you so very much! That solved the issue!

To summarize:

The acceptbutton property when set intercepts the enter key from the keyboard event and then fires the click event for the button. This effectively disables all multiline text boxes on the form from being able to process the enter key.

Again, thank you for your assistance.