XML Deserialization / Serialization

[edelhart]

I am getting what appear to be read/write conflicts. This is a simple
desktop C# project.

The applicaiton I am creating is a basic group/member system wherein
you create a team and create members for it.

I have a team dialog that upon clicking submit, deserializes (saves)
it.
when the calling method tries to then load all teams (to display them
in a list box), I get conflicts.

Is there a way to make sure that the serialize / deserialize calls are
called as single threads?

/* THE SUBMIT BUTTON CODE */
private void Create_Click(object sender, System.EventArgs e)
{
newTeam.ID = Team.newID();
newTeam.write();
newTeam = null;
this.Close();
}

/* THE PARENT FORM CODE */

private void btn_new_team_Click(object sender, System.EventArgs e)
{
frmTeam mFNT = new frmTeam();
mFNT.ShowDialog();
mFNT = null;
this.loadTeams();
}
public void loadTeams()
{
this.locTeams = Team.getTeams();
foreach (Team mTeam in this.locTeams)
{
this.lst_groups.Items.Add(mTeam.name);
mTeam.write();
}
if (this.LoadTeamsTimer != null)
{
this.LoadTeamsTimer.Enabled = false;
this.LoadTeamsTimer = null;
}
}

/* THE ERROR */
private void btnNewMember_Click(object sender, System.EventArgs e)
The process cannot access the file "C:\Documents and Settings\Dave
Edelhart\My Documents\Visual Studio
Projects\SUIITS\bin\Debug\teams\1.xml" because it is being used by
another process.