Help with enable/disable save button

[Rick Shaw]

Hi, can anyone help? I am fairly new to C# and need help with a
functionlity in my app. What I need to accomplish is to be able to enable
the SAVE button as soon as the user modifies a data in the form. Data
could be in a datagridview or textbox. All data are connected to the
tables/dataset. What is the easiest way to do this?

Thank you.

[Rick Shaw]

Hehe, forgot to say that the SAVE button should be disabled after it was
clicked. Other buttons are affected by this too. CANCEL button will have
to follow the state of the SAVE button.

Thanks,

"Rick Shaw" <ri************ *****@hotmail.c omwrote in message
news:%2******** **********@TK2M SFTNGP03.phx.gb l...

Hi, can anyone help? I am fairly new to C# and need help with a
functionlity in my app. What I need to accomplish is to be able to enable
the SAVE button as soon as the user modifies a data in the form. Data
could be in a datagridview or textbox. All data are connected to the
tables/dataset. What is the easiest way to do this?

Thank you.

[Kevin Spencer]

Typically, this is done by using a boolean field in the form which is
called, for example, "Dirty." It is initialized to false. In your case, you
might also want to use a Property, so that when you set the value, it can
change the state of the Save button at the same time. Example:

private bool _Dirty = false;
public bool Dirty
{
get { return _Dirty; }
set { btnSave.Enabled =_Dirty = value; }
}

Then you use an event handler for each Control that can affect the Dirty
value. How this is done depends on the Control. For a combobox, the
SelectedIndexCh anged event will do the trick. For a TextBox, the TextChanged
event will work. And so on. The handlers for these events should set the
Dirty property to true. The only time the Dirty property is set to false is
when the Form is initialized.

--
HTH,

Kevin Spencer
Microsoft MVP
Chicken Salad Surgery

Who is Mighty Abbott? A twin-turret scalawag.

"Rick Shaw" <ri************ *****@hotmail.c omwrote in message
news:%2******** **********@TK2M SFTNGP03.phx.gb l...

Hi, can anyone help? I am fairly new to C# and need help with a
functionlity in my app. What I need to accomplish is to be able to enable
the SAVE button as soon as the user modifies a data in the form. Data
could be in a datagridview or textbox. All data are connected to the
tables/dataset. What is the easiest way to do this?

Thank you.

[Rick Shaw]

Hi Kevin. Thanks for the quick reply.

Anyway, I was thinking that if I check the data change at the dataset level,
that will be better. With that, I have a question.

Is there a way to know about the change as soon as the user type or modify
someting, say in a gridview, even before pressing enter or tabbing out of
the cell?

Please advise.

Thank you.

Rick..
"Kevin Spencer" <uc*@ftc.govwro te in message
news:ue******** ********@TK2MSF TNGP04.phx.gbl. ..

Typically, this is done by using a boolean field in the form which is
called, for example, "Dirty." It is initialized to false. In your case,

you

might also want to use a Property, so that when you set the value, it can
change the state of the Save button at the same time. Example:

private bool _Dirty = false;
public bool Dirty
{
get { return _Dirty; }
set { btnSave.Enabled =_Dirty = value; }
}

Then you use an event handler for each Control that can affect the Dirty
value. How this is done depends on the Control. For a combobox, the
SelectedIndexCh anged event will do the trick. For a TextBox, the

TextChanged

event will work. And so on. The handlers for these events should set the
Dirty property to true. The only time the Dirty property is set to false

is

when the Form is initialized.

--
HTH,

Kevin Spencer
Microsoft MVP
Chicken Salad Surgery

Who is Mighty Abbott? A twin-turret scalawag.

"Rick Shaw" <ri************ *****@hotmail.c omwrote in message
news:%2******** **********@TK2M SFTNGP03.phx.gb l...

Hi, can anyone help? I am fairly new to C# and need help with a
functionlity in my app. What I need to accomplish is to be able to

enable

the SAVE button as soon as the user modifies a data in the form. Data
could be in a datagridview or textbox. All data are connected to the
tables/dataset. What is the easiest way to do this?

Thank you.