get cell value within gridview

[Mike]

I have a gridview that has a button in the last cell of each row. I want to get the text from cell 1 for that row the button was clicked on.

So if my gridview looks like this:

N-12 BMW [select]
N-35 Mercedes [select]

if my user clicks row 2, I want to see Mercedes, How can I do that?

I have a buttonClick event for my select button, I'm trying to pull the values using the DataKeyName, but I keep getting 'object reference not set to an instance of an object.

here is what i'm trying

select_Click()
{
string make = grid1.SelectedD ataKey.Values["CarMake"].toString();

}

any suggestions on how I can get the cell 1 text for the selected row within my Select_Click()?

[Mike]

1) Does the code jump into the correct method?
Yes

2) Assuming it does, in the Immediate window write grid1 and press Enter -
do you see the properties of your GridView;
yes, but these properties are set to the following, even though I
selected a row via the button
SelectedDataKey : null
SelectedIndex: -1
SelectedRow: null
SelectedRowStyl e: {System.Web.UI. WebControls.Tab leItemStyle}
SelectedValue: null
3) Assuming you do, in the Immediate window write grid1.SelectedR ow and
press Enter - what do you see...? null is displayed in the windows

"Mark Rae [MVP]" <ma**@markNOSPA Mrae.netwrote in message
news:ez******** ******@TK2MSFTN GP02.phx.gbl...

"Mike" <Mi**@community .nospam.comwrot e in message
news:uh******** ******@TK2MSFTN GP06.phx.gbl...

>I've tried that to and get;

Object reference not set to an instance of an object

Hmm - OK...

Set a breakpoint on the first line of the click even and run the code
again

1) Does the code jump into the correct method?

2) Assuming it does, in the Immediate window write grid1 and press Enter -
do you see the properties of your GridView?

3) Assuming you do, in the Immediate window write grid1.SelectedR ow and
press Enter - what do you see...?
--
Mark Rae
ASP.NET MVP
http://www.markrae.net

[Mark Rae [MVP]]

"Mike" <Mi**@community .nospam.comwrot e in message
news:e7******** ******@TK2MSFTN GP06.phx.gbl...

>1) Does the code jump into the correct method?

Yes

OK.

>2) Assuming it does, in the Immediate window write grid1 and press
Enter - do you see the properties of your GridView?

SelectedRow: null

Aha - well there's your problem right there...

Whatever you are doing behind the click of the Buttons in the GridView's
rows, it's not actually marking the row the Button is on as Selected...

Fix that, and everything else should work...

Alternately, wire up a SelectedIndexCh anged event to the GridView

protected void grid1_SelectedI ndexChanged(Obj ect sender, EventArgs e)
{
GridViewRow objRow = grid1.SelectedR ow;
}

Does that at least tell you which row is selected...?
--
Mark Rae
ASP.NET MVP
http://www.markrae.net

[Ian Semmel]

Just put a test

if ( SelectedIndex < 0 )
return;

-----Original Message-----
From: Mike [mailto:Mi**@com munity.nospam.c om]
Posted At: Friday, 19 October 2007 3:49 AM
Posted To: microsoft.publi c.dotnet.framew ork.aspnet
Conversation: get cell value within gridview
Subject: Re: get cell value within gridview

1) Does the code jump into the correct method?
Yes

2) Assuming it does, in the Immediate window write grid1 and press
Enter -
do you see the properties of your GridView;
yes, but these properties are set to the following, even

though

I
selected a row via the button
SelectedDataKey : null
SelectedIndex: -1
SelectedRow: null
SelectedRowStyl e:
{System.Web.UI. WebControls.Tab leItemStyle}
SelectedValue: null
3) Assuming you do, in the Immediate window write grid1.SelectedR ow
and
press Enter - what do you see...? null is displayed in the windows

"Mark Rae [MVP]" <ma**@markNOSPA Mrae.netwrote in message
news:ez******** ******@TK2MSFTN GP02.phx.gbl...

"Mike" <Mi**@community .nospam.comwrot e in message
news:uh******** ******@TK2MSFTN GP06.phx.gbl...

I've tried that to and get;

Object reference not set to an instance of an object

Hmm - OK...

Set a breakpoint on the first line of the click even and run the

code

again

1) Does the code jump into the correct method?

2) Assuming it does, in the Immediate window write grid1 and press

Enter -

do you see the properties of your GridView?

3) Assuming you do, in the Immediate window write grid1.SelectedR ow

and

press Enter - what do you see...?
--
Mark Rae
ASP.NET MVP
http://www.markrae.net

[Mark Rae [MVP]]

"Ian Semmel" <an****@rocketc omp.com.auwrote in message
news:A8A047B34A 504EA5A7DE7F646 DBB42AE@DIMITY. ..

Just put a test

if ( SelectedIndex < 0 )
return;

How will that help...?
--
Mark Rae
ASP.NET MVP
http://www.markrae.net

[Mike]

I've just noticed (after about an hour on this), the developer that created
this page is using a template field that has a imgButton in it. So he has
the image Button calling the Sales_Click() method. he is currently passing
the ID of the field using the CommandArgument .

So I guess I have a new issue then with this. Is there a way to either pass
2 parameters in the command argument or is there a way to get the value from
a particular cell within the grid when the user clicks the imgButton on a
row?


"Mark Rae [MVP]" <ma**@markNOSPA Mrae.netwrote in message
news:em******** ******@TK2MSFTN GP06.phx.gbl...

"Mike" <Mi**@community .nospam.comwrot e in message
news:e7******** ******@TK2MSFTN GP06.phx.gbl...

>>1) Does the code jump into the correct method?

Yes

OK.

>>2) Assuming it does, in the Immediate window write grid1 and press
Enter - do you see the properties of your GridView?

SelectedRow: null

Aha - well there's your problem right there...

Whatever you are doing behind the click of the Buttons in the GridView's
rows, it's not actually marking the row the Button is on as Selected...

Fix that, and everything else should work...

Alternately, wire up a SelectedIndexCh anged event to the GridView

protected void grid1_SelectedI ndexChanged(Obj ect sender, EventArgs e)
{
GridViewRow objRow = grid1.SelectedR ow;
}

Does that at least tell you which row is selected...?
--
Mark Rae
ASP.NET MVP
http://www.markrae.net