All,

Before I begin with the long winded explanation and question I have
researched this through this forum and google and haven't found any
answers. I throw myself on the mercy of this group.

Admittedly I don't have much background with c# and the code I am using
is mostly borrowed from a number of sources. With that said I am trying
to fill a DataGrid with an ArrayList of Project objects in a Windows
Form.  I am able to load the ArrayList into the DataGrid along with a
desired boolean checkbox in the first column.  However, when I change
the value of the checkbox and then click a button to test whether it is
true or false the checkbox value reverts back to its default.  There
are a number of things going on (as far as I can tell with my limited
knowledge).

Some assumptions:

1) I don't have a formal dataset (datatable) defined because I load the
datagrid directly from the arraylist.
2) I defined the checkbox via a DataGridTableStyle using
DataGridBoolColumn. In order to create an actual checkbox within the
row I need to give each checkbox a default value.

I have defined my Project object as follows to accomplish setting a
default value for each checkbox:

public Project( bool select,
                        int projectID,
                        string projectName,
                        string projectSponsor,
                        string projectCategory,
                        DateTime startDate,
                        DateTime finishDate,
                        string orgPriority,
                        string divPriority,
                        string upsPriority,
                        int percentComplete,
                        int percentWorkComplete )
select is the boolean that I set to false for each Project object.

I load the ArrayList with Project as follows where row is my arraylist:

row.Add(new Project(    false,
                                   iProjectID,
                                   sProjectName[0],
                                   sProjectSponsor,
                                   sProjectCategory,
                                   Convert.ToDateTime(sStartDate),
                                   Convert.ToDateTime(sEndDate),
                                   sOrgPriority,
                                   sDivPriority,
                                   sUPSPriority,
                                   iPercentComplete,
                                   iPercentWorkComplete));

I bind the arraylist to my DataGrid where projectData is the DataGrid:

projectData.DataSource = row;

I then define a series of DataGridTableStyles where the first one is
DataGridBoolColumn:

            DataGridBoolColumn cb = new DataGridBoolColumn();
            cb.MappingName = "Select";
            cb.HeaderText = "Select";
            ((DataGridBoolColumn)cb).ReadOnly = false;
            cb.Width = Convert.ToInt16(0.25 * colwidth);
            // Add Column to GridColumnStyles
            tableStyle.GridColumnStyles.Add(cb);

After I have done all this, everything appears correctly within the
DataGrid. When I check a checkbox a little pencil shows up in the row
header. When the checkbox cell loses focus the value reverts back to
the default value set in my Project object.

As I mentioned above, I don't seem to have a named dataset/datatable
because I am loading directly from an arraylist.

What am I doing wrong?

Thanks in advance,
Kevin

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