In VB6 I have a screen the has a text box and a datagrid
If I click the datagrid, the 1st event is to validate the textbox and
then the 2nd event is a datagrid mousedown event. If a get an error
message in the textbox validate it seems the mousedown event is never
executed.
In VB.Net it executes the textbox validation and then displays the
error, but still executes the mousedown event. It appears that I have
to explicitly cancel/clear the event queue in VB.Net if there is an
error.
How do I do that?
5  8899 
On Oct 15, 7:56 am, Steve <eastforkfa...@ yahoo.comwrote:
In VB6 I have a screen the has a text box and a datagrid
If I click the datagrid, the 1st event is to validate the textbox and
then the 2nd event is a datagrid mousedown event. If a get an error
message in the textbox validate it seems the mousedown event is never
executed.
In VB.Net it executes the textbox validation and then displays the
error, but still executes the mousedown event. It appears that I have
to explicitly cancel/clear the event queue in VB.Net if there is an
error.
How do I do that?
Did you use e.Cancel = True in the Validating event handler?
Thanks,
Seth Rowe
On Oct 15, 8:10 am, rowe_newsgroups <rowe_em...@yah oo.comwrote:
On Oct 15, 7:56 am, Steve <eastforkfa...@ yahoo.comwrote:
In VB6 I have a screen the has a text box and a datagrid
If I click the datagrid, the 1st event is to validate the textbox and
then the 2nd event is a datagrid mousedown event. If a get an error
message in the textbox validate it seems the mousedown event is never
executed.
In VB.Net it executes the textbox validation and then displays the
error, but still executes the mousedown event. It appears that I have
to explicitly cancel/clear the event queue in VB.Net if there is an
error.
How do I do that?
Did you use e.Cancel = True in the Validating event handler?
Thanks,
Seth Rowe
Seth,
I already do that, but the mousedown for the datagrid (not the
textbox) still executes.
On Oct 15, 9:36 am, Steve <eastforkfa...@ yahoo.comwrote:
On Oct 15, 8:10 am, rowe_newsgroups <rowe_em...@yah oo.comwrote:
On Oct 15, 7:56 am, Steve <eastforkfa...@ yahoo.comwrote:
In VB6 I have a screen the has a text box and a datagrid
If I click the datagrid, the 1st event is to validate the textbox and
then the 2nd event is a datagrid mousedown event. If a get an error
message in the textbox validate it seems the mousedown event is never
executed.
In VB.Net it executes the textbox validation and then displays the
error, but still executes the mousedown event. It appears that I have
to explicitly cancel/clear the event queue in VB.Net if there is an
error.
How do I do that?
Did you use e.Cancel = True in the Validating event handler?
Thanks,
Seth Rowe
Seth,
I already do that, but the mousedown for the datagrid (not the
textbox) still executes.
Alright, I figured I'd have you check the basics before I spent too
much time looking into it (lazy me :-)).
Imo, the MouseDown event should fire, because after all you did press
the mouse down on the datagrid. The behavior of a failed validation is
by default to just prevent a focus change, and not to prevent any
other control from performing an action. If you need to run some code
conditionally based on whether or not the textbox's validation
succeeded, the easiest (imo) method would be to use a simple boolean
flag that is checked by the MouseDown event handler.
Thanks,
Seth Rowe
On Oct 15, 10:08 am, rowe_newsgroups <rowe_em...@yah oo.comwrote:
On Oct 15, 9:36 am, Steve <eastforkfa...@ yahoo.comwrote:
On Oct 15, 8:10 am, rowe_newsgroups <rowe_em...@yah oo.comwrote:
On Oct 15, 7:56 am, Steve <eastforkfa...@ yahoo.comwrote:
In VB6 I have a screen the has a text box and a datagrid
If I click the datagrid, the 1st event is to validate the textbox and
then the 2nd event is a datagrid mousedown event. If a get an error
message in the textbox validate it seems the mousedown event is never
executed.
In VB.Net it executes the textbox validation and then displays the
error, but still executes the mousedown event. It appears that I have
to explicitly cancel/clear the event queue in VB.Net if there is an
error.
How do I do that?
Did you use e.Cancel = True in the Validating event handler?
Thanks,
Seth Rowe
Seth,
I already do that, but the mousedown for the datagrid (not the
textbox) still executes.
Alright, I figured I'd have you check the basics before I spent too
much time looking into it (lazy me :-)).
Imo, the MouseDown event should fire, because after all you did press
the mouse down on the datagrid. The behavior of a failed validation is
by default to just prevent a focus change, and not to prevent any
other control from performing an action. If you need to run some code
conditionally based on whether or not the textbox's validation
succeeded, the easiest (imo) method would be to use a simple boolean
flag that is checked by the MouseDown event handler.
Thanks,
Seth Rowe- Hide quoted text -
- Show quoted text -
Seth,
I agree. Although, this code will be used in over 100 projects, and I
hate to drag around an extra variable for each. Can you think of
anything that would be a little more imaginative?
Thanks ,
Steve
On Oct 15, 10:44 am, Steve <eastforkfa...@ yahoo.comwrote:
On Oct 15, 10:08 am, rowe_newsgroups <rowe_em...@yah oo.comwrote:
On Oct 15, 9:36 am, Steve <eastforkfa...@ yahoo.comwrote:
On Oct 15, 8:10 am, rowe_newsgroups <rowe_em...@yah oo.comwrote:
On Oct 15, 7:56 am, Steve <eastforkfa...@ yahoo.comwrote:
In VB6 I have a screen the has a text box and a datagrid
If I click the datagrid, the 1st event is to validate the textbox and
then the 2nd event is a datagrid mousedown event. If a get an error
message in the textbox validate it seems the mousedown event is never
executed.
In VB.Net it executes the textbox validation and then displays the
error, but still executes the mousedown event. It appears that I have
to explicitly cancel/clear the event queue in VB.Net if there is an
error.
How do I do that?
Did you use e.Cancel = True in the Validating event handler?
Thanks,
Seth Rowe
Seth,
I already do that, but the mousedown for the datagrid (not the
textbox) still executes.
Alright, I figured I'd have you check the basics before I spent too
much time looking into it (lazy me :-)).
Imo, the MouseDown event should fire, because after all you did press
the mouse down on the datagrid. The behavior of a failed validation is
by default to just prevent a focus change, and not to prevent any
other control from performing an action. If you need to run some code
conditionally based on whether or not the textbox's validation
succeeded, the easiest (imo) method would be to use a simple boolean
flag that is checked by the MouseDown event handler.
Thanks,
Seth Rowe- Hide quoted text -
- Show quoted text -
Seth,
I agree. Although, this code will be used in over 100 projects, and I
hate to drag around an extra variable for each. Can you think of
anything that would be a little more imaginative?
Thanks ,
Steve
Well, you could use Add/Remove Handler to dynamically control whether
the mousedown event is processed by your event handler.
Something like:
///////////////
Public Class Form1
Private Sub TextBox1_Valida ting(ByVal sender As System.Object,
ByVal e As System.Componen tModel.CancelEv entArgs) Handles
TextBox1.Valida ting
e.Cancel = String.IsNullOr Empty(TextBox1. Text)
If e.Cancel Then RemoveHandler DataGridView1.M ouseDown,
AddressOf DataGridView1_M ouseDown
End Sub
Private Sub TextBox1_Valida ted(ByVal sender As System.Object,
ByVal e As System.EventArg s) Handles TextBox1.Valida ted
AddHandler DataGridView1.M ouseDown, AddressOf
DataGridView1_M ouseDown
End Sub
Private Sub DataGridView1_M ouseDown(ByVal sender As System.Object,
ByVal e As System.Windows. Forms.MouseEven tArgs) Handles
DataGridView1.M ouseDown
MessageBox.Show ("MouseDown" )
End Sub
End Class
///////////////
Thanks,
Seth Rowe This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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