unbind a datagrid, datalist, repeater, drop down etc

[Grant Merwitz]

How do you unbind one of these web controls.

I have a drop down list that based on another drop down list selection will
be databouns

private void BindDD2(int id)
{
DD2.DataSource = MyClass.GetList2(id);
DD2.DataBind();
}

Now, if i want to reset this drop down back to its pre bound state, how
would i do this.

I've tried:

1)
DD2.DataSource = null; //didn't work
2)
foreach(ListItem l in DD2.Items)
DD2.Items.Remoce(l); //also don't work
3)
DataSet ds = new DataSet();
DD2.DataSource = ds;
DD2.DataBind(); //this throws an error.
So, any ideas

TIA

[Lars-Erik Aabech]

Hi!

Try DD2.Items.Clear()

HTH,
Lars-Erik

"Grant Merwitz" <gr***@workshare.com> wrote in message
news:OM****************@TK2MSFTNGP10.phx.gbl...

How do you unbind one of these web controls.

I have a drop down list that based on another drop down list selection
will be databouns

private void BindDD2(int id)
{
DD2.DataSource = MyClass.GetList2(id);
DD2.DataBind();
}

Now, if i want to reset this drop down back to its pre bound state, how
would i do this.

I've tried:

1)
DD2.DataSource = null; //didn't work
2)
foreach(ListItem l in DD2.Items)
DD2.Items.Remoce(l); //also don't work
3)
DataSet ds = new DataSet();
DD2.DataSource = ds;
DD2.DataBind(); //this throws an error.
So, any ideas

TIA

[Eliyahu Goldin]

DD2.Items.Clear();

Eliyahu

"Grant Merwitz" <gr***@workshare.com> wrote in message
news:OM****************@TK2MSFTNGP10.phx.gbl...

How do you unbind one of these web controls.

I have a drop down list that based on another drop down list selection will be databouns

private void BindDD2(int id)
{
DD2.DataSource = MyClass.GetList2(id);
DD2.DataBind();
}

Now, if i want to reset this drop down back to its pre bound state, how
would i do this.

I've tried:

1)
DD2.DataSource = null; //didn't work
2)
foreach(ListItem l in DD2.Items)
DD2.Items.Remoce(l); //also don't work
3)
DataSet ds = new DataSet();
DD2.DataSource = ds;
DD2.DataBind(); //this throws an error.
So, any ideas

TIA

[Grant Merwitz]

knew it was something simple

Thanks :)

"Lars-Erik Aabech" <la******@newsgroup.nospam> wrote in message
news:Oy**************@TK2MSFTNGP09.phx.gbl...

Hi!

Try DD2.Items.Clear()

HTH,
Lars-Erik

"Grant Merwitz" <gr***@workshare.com> wrote in message
news:OM****************@TK2MSFTNGP10.phx.gbl...

How do you unbind one of these web controls.

I have a drop down list that based on another drop down list selection
will be databouns

private void BindDD2(int id)
{
DD2.DataSource = MyClass.GetList2(id);
DD2.DataBind();
}

Now, if i want to reset this drop down back to its pre bound state, how
would i do this.

I've tried:

1)
DD2.DataSource = null; //didn't work
2)
foreach(ListItem l in DD2.Items)
DD2.Items.Remoce(l); //also don't work
3)
DataSet ds = new DataSet();
DD2.DataSource = ds;
DD2.DataBind(); //this throws an error.
So, any ideas

TIA

[Grant Merwitz]

so DD2.Items.Clear() works perfectly on a dropdown
but hows about a DataGrid?

"Grant Merwitz" <gr***@workshare.com> wrote in message
news:OM****************@TK2MSFTNGP10.phx.gbl...

How do you unbind one of these web controls.

I have a drop down list that based on another drop down list selection
will be databouns

private void BindDD2(int id)
{
DD2.DataSource = MyClass.GetList2(id);
DD2.DataBind();
}

Now, if i want to reset this drop down back to its pre bound state, how
would i do this.

I've tried:

1)
DD2.DataSource = null; //didn't work
2)
foreach(ListItem l in DD2.Items)
DD2.Items.Remoce(l); //also don't work
3)
DataSet ds = new DataSet();
DD2.DataSource = ds;
DD2.DataBind(); //this throws an error.
So, any ideas

TIA

[Lars-Erik Aabech]

Depends if you want to keep the column headers. If not, you could just
create an empty data source and bind. :)

DataTable dt = new DataTable();
// Create columns here..
DataGrid1.DataSource = dt;
DataGrid1.DataBind();

Or you could set DataGrid1.EnableViewState = false, and repost the page..

You could even do SELECT * FROM myTable WHERE myId = 0 and fill the data
source, then you'd have the columns, but no data..

The possibilities are many ;)

Lars-Erik

"Grant Merwitz" <gr***@workshare.com> wrote in message
news:%2****************@tk2msftngp13.phx.gbl...

so DD2.Items.Clear() works perfectly on a dropdown
but hows about a DataGrid?

"Grant Merwitz" <gr***@workshare.com> wrote in message
news:OM****************@TK2MSFTNGP10.phx.gbl...

How do you unbind one of these web controls.

I have a drop down list that based on another drop down list selection
will be databouns

private void BindDD2(int id)
{
DD2.DataSource = MyClass.GetList2(id);
DD2.DataBind();
}

Now, if i want to reset this drop down back to its pre bound state, how
would i do this.

I've tried:

1)
DD2.DataSource = null; //didn't work
2)
foreach(ListItem l in DD2.Items)
DD2.Items.Remoce(l); //also don't work
3)
DataSet ds = new DataSet();
DD2.DataSource = ds;
DD2.DataBind(); //this throws an error.
So, any ideas

TIA