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How to Convert

How can I convert this part of the line:
Me.dgvmyData.Co lumns.Item("txt CellName") ' "txtCellNam e"
which is within this line -
Me.dgvmyData.So rt(Me.dgvmyData .Columns.Item(" txtCellName"),
System.Componen tModel.ListSort Direction.Ascen ding)

To read something like:
Me.dgvmyData.Co lumns.Item( nonQuotedVariab le )

So I do not have to use a "String" variable to specify the column name.
I made an error in on one of my datagrids and Im sure there is a way to
specify the column name without using a string character that could result
in errors ( like I created ).

Thanks

Miro

Sep 19 '08
12 1561
Thank you Steve and Branco,

I have tested out what you have said and you are correct. -As you
suspected, and as I suspected :-)
-By me not "removing" the field, I can directly sort on it using the
Me.txtRounds control name.

I just dont seem to understand why the original code does fail still.
I am adding my "column" back into the datagridview as a column so therefore
it does exist in the controls collection.
So,
dgvRounds.Colum ns.Insert(index , dgvMaskedEdit)
should be adding the "txtRound" column into the dgvRounds.Colum ns collection

My problem is that I cannto use dgvMaskedEdit as its only decalred in a mini
sub, and is re-used about 5 or 6 times replacing a couple columns.

If this is not really changing the "Name"
>dgvMaskedEdit. Name = "txtRoundTi me"
"The runtime "Name" property has (almost) nothing to do with the
control's name, which is what you must use =))"

Then I am assuming there is no real way to change the runtime's name to be
the REAL controls NAME property?

Thanks

Miro
"Branco Medeiros" <br************ *@gmail.comwrot e in message
news:95******** *************** ***********@f63 g2000hsf.google groups.com...
Miro wrote:
<snip>
My datagrid name is dgvRounds
My column ( or one of them ) is named 'txtRounds' - i have already renamed
it.
I have my data filled in the datagrid.

What I am understanding is that I can sort my datagrid like this ( by your
code )

Me.dgvRounds.So rt(Me.txtRound,
System.Componen tModel.ListSort Direction.Ascen ding)

The error I get - during runtime is:
Column provided does not belong to this DataGridVew control

The way I am adding the column is like this:
On the form load:
Dim index As Integer
Dim dgvMaskedEdit As DataGridViewMas kedEditColumn 'custom class
that is a masked edit column

'find old column that is just a text box and remove it and add the
masked edit text box in its place.
index = dgvRounds.Colum ns.IndexOf(dgvR ounds.Columns(" txtRound"))
dgvRounds.Colum ns.Remove("txtR ound")
<snip>
dgvRounds.Colum ns.Insert(index , dgvMaskedEdit)
<snip>

As Steve pointed out, once you remove txtRound from the grid, it
doesn't belong to the gridview anymore. The column you must use to
sort is dgvMaskedEdit.

<example>
Me.dgvRounds.So rt(Me.dgvMasked Edit, _
System.Componen tModel.ListSort Direction.Ascen ding)
</example>

The runtime "Name" property has (almost) nothing to do with the
control's name, which is what you must use =))

Hope that helped.

Branco.

Sep 24 '08 #11
Miro wrote:
>
If this is not really changing the "Name"
>dgvMaskedEdit. Name = "txtRoundTi me"

"The runtime "Name" property has (almost) nothing to do with the
control's name, which is what you must use =))"

Then I am assuming there is no real way to change the runtime's name
to be the REAL controls NAME property?
You are confusing the Name property with the name given to a reference variable
in your code.

When you do Dim txtRounds As TextColumn, you have a reference variable for a
column. Often, but not always or necessarily, the column will also have its Name
property = "txtRounds" . But that is the Name of the column, not the name of your
reference variable.

Once you do
dgvMaskedEdit = New DataGridViewMas kedEditColumn

you can assign it any Name you like. But if you want to refer to the column by a
variable, use dgvMaskedEdit, not the column name.

Once you have done
dgvRounds.Colum ns.Insert(index , dgvMaskedEdit)

you should be able to sort by that column using
dgvRounds.Sort( dgvMaskedEdit)

The only use for the Name would be something like
dgvRounds.Sort( dgvRounds.Colum ns.Item("txtRou nds"))

which pretty much defeats the intent of not using string names.

Sep 24 '08 #12
Thank you for the explination. -I think I understand.

Much appreciated, and thanks for being patient.

Cheers'

Miro

"Steve Gerrard" <my********@com cast.netwrote in message
news:JO******** *************** *******@comcast .com...
Miro wrote:
>>
If this is not really changing the "Name"
>>dgvMaskedEdit .Name = "txtRoundTi me"

"The runtime "Name" property has (almost) nothing to do with the
control's name, which is what you must use =))"

Then I am assuming there is no real way to change the runtime's name
to be the REAL controls NAME property?

You are confusing the Name property with the name given to a reference
variable in your code.

When you do Dim txtRounds As TextColumn, you have a reference variable for
a column. Often, but not always or necessarily, the column will also have
its Name property = "txtRounds" . But that is the Name of the column, not
the name of your reference variable.

Once you do
dgvMaskedEdit = New DataGridViewMas kedEditColumn

you can assign it any Name you like. But if you want to refer to the
column by a variable, use dgvMaskedEdit, not the column name.

Once you have done
dgvRounds.Colum ns.Insert(index , dgvMaskedEdit)

you should be able to sort by that column using
dgvRounds.Sort( dgvMaskedEdit)

The only use for the Name would be something like
dgvRounds.Sort( dgvRounds.Colum ns.Item("txtRou nds"))

which pretty much defeats the intent of not using string names.


Sep 24 '08 #13

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