Dynamic Listbox in Gridview

[MikeB]

Hello All,

I know this has to be something simple but I have having a hard time finding
examples. I need to add a dynamic listbox to a gridview.

For example, my grid view displays categories and then in each row/ category
I have a list box that displays items in the category.

Can anyone give any pointers or examples?

[Mark Rae]

"MikeB" <[e-mail] ote in message
news:%2******** ********@TK2MSF TNGP04.phx.gbl. ..

Can anyone give any pointers or examples?

Google is your friend:
http://www.google.co.uk/search?sourc...idView+ListBox

[MikeB]

Thank you, I have been searching on the wrong terms.

"Mark Rae" <ma**@markNOSPA Mrae.comwrote in message
news:O9******** ******@TK2MSFTN GP04.phx.gbl...

"MikeB" <[e-mail] ote in message
news:%2******** ********@TK2MSF TNGP04.phx.gbl. ..

>Can anyone give any pointers or examples?

Google is your friend:
http://www.google.co.uk/search?sourc...idView+ListBox

[MikeB]

New question, my dropdown list will not load with the data. I am setting
the object datasouce with the below code howver, it isn't working (I debuged
though it and it is being called correctly).

protected void GridView1_RowDa taBound(object sender, GridViewRowEven tArgs e)

{

if (e.Row.RowType == DataControlRowT ype.DataRow)

{

ObjectDataSourc e ds =
(ObjectDataSour ce)e.Row.FindCo ntrol("ObjectDa taSource2");

ds.SelectParame ters["categoryID "].DefaultValue =
GridView1.DataK eys[e.Row.DataItemI ndex].Value.ToString ();

}

}

"MikeB" <[e-mail] ote in message
news:%2******** ********@TK2MSF TNGP04.phx.gbl. ..

Hello All,

I know this has to be something simple but I have having a hard time
finding examples. I need to add a dynamic listbox to a gridview.

For example, my grid view displays categories and then in each row/
category I have a list box that displays items in the category.

Can anyone give any pointers or examples?

[Mark Rae]

"MikeB" <[e-mail] ote in message
news:eh******** ******@TK2MSFTN GP05.phx.gbl...

New question, my dropdown list will not load with the data. I am setting
the object datasouce with the below code howver, it isn't working (I
debuged though it and it is being called correctly).

protected void GridView1_RowDa taBound(object sender, GridViewRowEven tArgs
e)

{

if (e.Row.RowType == DataControlRowT ype.DataRow)

{

ObjectDataSourc e ds =
(ObjectDataSour ce)e.Row.FindCo ntrol("ObjectDa taSource2");

ds.SelectParame ters["categoryID "].DefaultValue =
GridView1.DataK eys[e.Row.DataItemI ndex].Value.ToString ();

It doesn't appear as if you're actually binding the datasource to the
DropDownList...

Something like:

DropDownList ddl = e.Row.Cells[...].FindControl(". ..");
ddl.DataSource = ds;
ddl.DataBind();

You'll also need to specify which field in your datasource is the value and
which the text of each of the ListItems in your DropDownList...

[MikeB]

I am having one of those days. Thank you again.

"Mark Rae" <ma**@markNOSPA Mrae.comwrote in message
news:u7******** ******@TK2MSFTN GP06.phx.gbl...

"MikeB" <[e-mail] ote in message
news:eh******** ******@TK2MSFTN GP05.phx.gbl...

>New question, my dropdown list will not load with the data. I am
setting the object datasouce with the below code howver, it isn't working
(I debuged though it and it is being called correctly).

protected void GridView1_RowDa taBound(object sender, GridViewRowEven tArgs
e)

{

if (e.Row.RowType == DataControlRowT ype.DataRow)

{

ObjectDataSour ce ds =
(ObjectDataSou rce)e.Row.FindC ontrol("ObjectD ataSource2");

ds.SelectParam eters["categoryID "].DefaultValue =
GridView1.Data Keys[e.Row.DataItemI ndex].Value.ToString ();

It doesn't appear as if you're actually binding the datasource to the
DropDownList...

Something like:

DropDownList ddl = e.Row.Cells[...].FindControl(". ..");
ddl.DataSource = ds;
ddl.DataBind();

You'll also need to specify which field in your datasource is the value
and which the text of each of the ListItems in your DropDownList...

[Charles]

One error I found in the code sample was:

ds.SelectParame ters["categoryID "].DefaultValue =
GridView1.DataK eys[e.Row.DataItemI ndex].Value.ToString ();

Should be:

ds.SelectParame ters["categoryID "].DefaultValue =
GridView1.DataK eys[e.Row.RowIndex].Value.ToString ();

I received an error when I had paging enabled, the e.Row.DataItemI ndex would be an invalid number (#11 in a 10 row GridView). e.Row.RowIndex on the other hand gives you the current row #.

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