I had a listbox on my form which was databound to a bindingsource, but was running into the issue that listboxes seem to always start with an item selected, so I changed to a datagridview, but seem to be having the same issue. Is there anyway to surpress the selection of a row in a datagridview when you load the data?
My work around right now is to not wire the SelectionChanged event until after the form load completes, but after I call ClearSelection in my form load. It seems like a kludge though.

Hello,

Thanks for your feedback.

>What I'm trying to accomplish seems very straight forward. I want a listbox type of control, which I can load data into, and not have it automatically select the first item. It's hard to believe that there is no functionality for this.

When binding control to data component(e.g. DataTable), we actually use a help class,BindingManagerBase class, to manage the binding object. And the BindingManagerBase object has a property(Position), which is zero-based index that specifies a position in the underlying list. That why the first item is select when we reload or rebind the control.

http://msdn.microsoft.com/en-us/library/system.windows.forms.bindingmanagerbase.position.aspx

To avoid unnecessary calling of SelectedChanged event, weusually use a flag tojudge if we need call the event handler. However, if the code just needs to function when the position ofunderlying is changed, we can handle the PositionChanged event of the BindingManagerBaseobject.

DataTable dt = new DataTable();
private void Form6_Load(object sender, EventArgs e)
{
dt.Columns.Add("name");
dt.Columns.Add("price", typeof(decimal));
dt.Rows.Add("item1", 1.25);
dt.Rows.Add("item2", 2.25);
dt.Rows.Add("item3", 4.25);
dt.AcceptChanges();
this.BindingContext[dt].PositionChanged+=new EventHandler(Form6_PositionChanged);
this.listBox1.DisplayMember = "name";
this.listBox1.DataSource = dt;
this.listBox1.SelectedIndex = -1;
}

void Form6_PositionChanged(object sender, EventArgs e)
{
MessageBox.Show("Position changed!");
}

private void button1_Click(object sender, EventArgs e)
{
this.listBox1.DataSource = null;
this.listBox1.DisplayMember = "name";
this.listBox1.DataSource = dt;
this.listBox1.SelectedIndex = -1;
}

Thanks,
Rong-Chun Zhang
MSDN Subscriber Support in Forum
If you have any feedback on our support, please contact msdnmg@microsoft.com

Hello,

Thanks for your feedback.

>What I'm trying to accomplish seems very straight forward. I want a listbox type of control, which I can load data into, and not have it automatically select the first item. It's hard to believe that there is no functionality for this.

When binding control to data component(e.g. DataTable), we actually use a help class,BindingManagerBase class, to manage the binding object. And the BindingManagerBase object has a property(Position), which is zero-based index that specifies a position in the underlying list. That why the first item is select when we reload or rebind the control.

http://msdn.microsoft.com/en-us/library/system.windows.forms.bindingmanagerbase.position.aspx

To avoid unnecessary calling of SelectedChanged event, weusually use a flag tojudge if we need call the event handler. However, if the code just needs to function when the position ofunderlying is changed, we can handle the PositionChanged event of the BindingManagerBaseobject.

DataTable dt = new DataTable();
private void Form6_Load(object sender, EventArgs e)
{
dt.Columns.Add("name");
dt.Columns.Add("price", typeof(decimal));
dt.Rows.Add("item1", 1.25);
dt.Rows.Add("item2", 2.25);
dt.Rows.Add("item3", 4.25);
dt.AcceptChanges();
this.BindingContext[dt].PositionChanged+=new EventHandler(Form6_PositionChanged);
this.listBox1.DisplayMember = "name";
this.listBox1.DataSource = dt;
this.listBox1.SelectedIndex = -1;
}

void Form6_PositionChanged(object sender, EventArgs e)
{
MessageBox.Show("Position changed!");
}

private void button1_Click(object sender, EventArgs e)
{
this.listBox1.DataSource = null;
this.listBox1.DisplayMember = "name";
this.listBox1.DataSource = dt;
this.listBox1.SelectedIndex = -1;
}

Thanks,
Rong-Chun Zhang
MSDN Subscriber Support in Forum
If you have any feedback on our support, please contact msdnmg@microsoft.com

Have you got any progress on this issue? If there is anything else we can help, welcome to post here.

If the issue is resolved, we will appreciate it if you can share the solution so that the answer can be found and used by other community members having similar questions.

Thanks,
Rong-Chun Zhang