How to: add column to datagrid (not bound to dataset)

[uknees]

Hi there,

I have a dataset which i want to have some of the columns bound to the
datagrid. I have all that columnstyle thingy going... except that I
want to have a column that displays a checkbox (DatagridBoolColumn)
of which the data is not taken from the dataset.

so... how can i have a datagrid that contains some columns that are
bound to a dataset and a column not bound?

Please help. Thanks

 

[Miha Markic]

Hi unkness,

You'll have to create your datasource.
As a simplier solution, why don't you add a column to DataTable?

--
Miha Markic - RightHand .NET consulting & software development
miha at rthand com
www.rthand.com

Hi there,

I have a dataset which i want to have some of the columns bound to the
datagrid. I have all that columnstyle thingy going... except that I
want to have a column that displays a checkbox (DatagridBoolColumn)
of which the data is not taken from the dataset.

so... how can i have a datagrid that contains some columns that are
bound to a dataset and a column not bound?

Please help. Thanks



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[uknees]

I tried adding this to my datatable.

ds.Tables("Bom").Columns.Add("Select", GetType(Boolean), False)

and now, the problem i am having is that when i click on the checkbox
:
-on the 1st row, it works fine
-2nd row will return an error saying that the 'Select' column is
readonly.

so, I added the code to allow this boolean Column.readonly = false

and it still returns the same error

any idea why?

 

[Ron Allen]

uknees,
Don't add the expression parameter (False) to your column. All you want
is the name and type. If you want to add a default value you can then do
ds.Tables("Bom").Columns("Select").DefaultValue = False
after creating the column. Adding False for the expression value makes the
column value always False and will not allow it to be changed.

Ron Allen

I tried adding this to my datatable.

ds.Tables("Bom").Columns.Add("Select", GetType(Boolean), False)

and now, the problem i am having is that when i click on the checkbox
:
-on the 1st row, it works fine
-2nd row will return an error saying that the 'Select' column is
readonly.

so, I added the code to allow this boolean Column.readonly = false

and it still returns the same error

any idea why?



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[uknees]

Hi Ron,

I have done what you have suggested.
ds.Tables("Bom").Columns("Select").DefaultValue = False

but, 2 questions though
- why is the checkbox greyed?
I have already set the columnstyle's AllowNull property to false.
-All the checkboxes have been checked. why?