Very Computer

I have a text box within template in a DataGrid control
with the ID of grdPackages__ctl3_txtOrderQty'.  Most of
the ID has been generated automatically by asp.Net.  The
name I gave it was 'txtOrderQty'.

If I try to get the value of this text box once the form
has been submitted, using:

    Request.Form("grdPackages__ctl4_txtOrderQty")

The value is a zero length string, yet I can see the
value is in fact a zero, i.e. "0".

Interestingly if use Request.Form(2), the correct value
is returned.

Why is the correct value not returned?

Is there an easier way of getting the values returned
from text boxes within a template on a DataGrid control?

Many thanks, Mike.

i.e
Dim str1 As String = CType(e.Item.FindControl
("txtOrderQty"), TextBox).Text

Quote:>-----Original Message-----
>What am I doing wrong?

>I have a text box within template in a DataGrid control
>with the ID of grdPackages__ctl3_txtOrderQty'.  Most of
>the ID has been generated automatically by asp.Net.  The
>name I gave it was 'txtOrderQty'.

>If I try to get the value of this text box once the form
>has been submitted, using:

>    Request.Form("grdPackages__ctl4_txtOrderQty")

>The value is a zero length string, yet I can see the
>value is in fact a zero, i.e. "0".

>Interestingly if use Request.Form(2), the correct value
>is returned.

>Why is the correct value not returned?

>Is there an easier way of getting the values returned
>from text boxes within a template on a DataGrid control?

>Many thanks, Mike.
>.

Where are you attempting to get the value of the textbox?  In what event on
PostBack?

Patrick Cole
Microsoft Developer Support

This posting is provided "AS IS" with no warranties, and confers no rights.
You assume all risk for your use. ? 2002 Microsoft Corporation. All rights
reserved.
--------------------
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| Subject: Can't get the value of a text box using it's ID
| Date: Thu, 15 Aug 2002 08:35:33 -0700
| Lines: 25

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|
| What am I doing wrong?
|
| I have a text box within template in a DataGrid control
| with the ID of grdPackages__ctl3_txtOrderQty'.  Most of
| the ID has been generated automatically by asp.Net.  The
| name I gave it was 'txtOrderQty'.
|
| If I try to get the value of this text box once the form
| has been submitted, using:
|
|     Request.Form("grdPackages__ctl4_txtOrderQty")
|
| The value is a zero length string, yet I can see the
| value is in fact a zero, i.e. "0".
|
| Interestingly if use Request.Form(2), the correct value
| is returned.
|
| Why is the correct value not returned?
|
| Is there an easier way of getting the values returned
| from text boxes within a template on a DataGrid control?
|
|
| Many thanks, Mike.
|

I am trying to get the value on a button onClick event,
i.e. in this case 'btnPlaceOrder_Click'.

I don't think the earlier suggestion by Mathew curry
would work - There is no way to iterate through each text
box automatically created by the Grid/Template control?

To expand slightly on what I am trying to do - I am
trying to iterate though all of the order quantity boxes
to see which items have been ordered.  I will then go on
to create the order for the items in a DB.

Thanks, Mike.

Quote:>-----Original Message-----
>Michael,

>Where are you attempting to get the value of the

Quote:>PostBack?

>Patrick Cole
>Microsoft Developer Support

>This posting is provided "AS IS" with no warranties, and
confers no rights.
>You assume all risk for your use. ? 2002 Microsoft

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>| X-Tomcat-NG:

Quote:>|
>| What am I doing wrong?
>|
>| I have a text box within template in a DataGrid
control
>| with the ID of grdPackages__ctl3_txtOrderQty'.  Most
of
>| the ID has been generated automatically by asp.Net.  
The
>| name I gave it was 'txtOrderQty'.
>|
>| If I try to get the value of this text box once the
form
>| has been submitted, using:
>|
>|     Request.Form("grdPackages__ctl4_txtOrderQty")
>|
>| The value is a zero length string, yet I can see the
>| value is in fact a zero, i.e. "0".
>|
>| Interestingly if use Request.Form(2), the correct
value
>| is returned.
>|
>| Why is the correct value not returned?
>|
>| Is there an easier way of getting the values returned
>| from text boxes within a template on a DataGrid
control?
>|
>|
>| Many thanks, Mike.
>|

>.

I see no reason why you could not iternate through a list of DataGridItems
for controls created in an ItemTemplate.  EditItemTemplate is a different
story.  In fact, if you are not updating the DataGrid via an Update_Command
event, I would think that enumerating the DataGridItems would be the only
solution.

I did not see the other post you are referring to, but here is a sample
that will loop through the DataGrid, locate the TextBox, and return the
text of each TextBox.

        // Modify "DataGrid1" to locate your DataGrid control
        DataGrid dgTemp = ((DataGrid)this.FindControl("DataGrid1"));

        // Loop through all DataGridItems in the DataGrid.
        foreach(DataGridItem dgiTemp in dgTemp.Controls[0].Controls)
        {
                // Check for Item or AlternatingItem DataGridItems.  Most likely you
                // will not have TextBoxes in the Header or Footer rows.
                if(dgiTemp.ItemType.ToString() == "Item" || dgiTemp.ItemType.ToString()
== "AlternatingItem")
                {
                        // "Test" is the ID of my TextBox.
                        TextBox tbTemp = ((TextBox)(dgiTemp.FindControl("Test")));
                        // Simply get the value and return it to the screen.
                        Response.Write(tbTemp.Text + "<br>");
                }
        }

Patrick Cole
Microsoft Developer Support

This posting is provided "AS IS" with no warranties, and confers no rights.
You assume all risk for your use. ? 2002 Microsoft Corporation. All rights
reserved.
--------------------
| Content-Class: urn:content-classes:message




| Subject: RE: Can't get the value of a text box using it's ID
| Date: Tue, 20 Aug 2002 03:56:39 -0700
| Lines: 94

| MIME-Version: 1.0
| Content-Type: text/plain;
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| Xref: cpmsftngxa10
microsoft.public.dotnet.framework.aspnet.webcontrols:4737
| X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet.webcontrols
|
| Patrick,
| I am trying to get the value on a button onClick event,
| i.e. in this case 'btnPlaceOrder_Click'.
| I don't think the earlier suggestion by Mathew curry
| would work - There is no way to iterate through each text
| box automatically created by the Grid/Template control?
| To expand slightly on what I am trying to do - I am
| trying to iterate though all of the order quantity boxes
| to see which items have been ordered.  I will then go on
| to create the order for the items in a DB.
| Thanks, Mike.

    foreach(DataGridItem dgiTemp in dgTemp.Items)

instead of;

    foreach(DataGridItem dgiTemp in dgTemp.Controls[0].Controls)

Then you could do away with the ItemType test.  Couldn't you?

It certainly would.  As the saying goes, there is always more than one way
to skin a cat.

I wrote the previous snippet in a hurry.  Would not be surprised if it
could be optimized further  :>)

Patrick Cole
Microsoft Developer Support

This posting is provided "AS IS" with no warranties, and confers no rights.
You assume all risk for your use. ? 2002 Microsoft Corporation. All rights
reserved.
--------------------






| Subject: Re: Can't get the value of a text box using it's ID
| Date: Tue, 20 Aug 2002 15:27:39 -0500
| Lines: 166
| X-Priority: 3
| X-MSMail-Priority: Normal
| X-Newsreader: Microsoft Outlook Express 6.00.2600.0000
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| NNTP-Posting-Host: 206.50.253.82
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| Xref: cpmsftngxa10
microsoft.public.dotnet.framework.aspnet.webcontrols:4756
| X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet.webcontrols
|
| Wouldn't it be easier to code;
|
|     foreach(DataGridItem dgiTemp in dgTemp.Items)
|
| instead of;
|
|     foreach(DataGridItem dgiTemp in dgTemp.Controls[0].Controls)
|
| Then you could do away with the ItemType test.  Couldn't you?
|


| > Michael,
| >
| > I see no reason why you could not iternate through a list of
DataGridItems
| > for controls created in an ItemTemplate.  EditItemTemplate is a
different
| > story.  In fact, if you are not updating the DataGrid via an
| Update_Command
| > event, I would think that enumerating the DataGridItems would be the
only
| > solution.
| >
| > I did not see the other post you are referring to, but here is a sample
| > that will loop through the DataGrid, locate the TextBox, and return the
| > text of each TextBox.
| >
| > // Modify "DataGrid1" to locate your DataGrid control
| > DataGrid dgTemp = ((DataGrid)this.FindControl("DataGrid1"));
| >
| > // Loop through all DataGridItems in the DataGrid.
| > foreach(DataGridItem dgiTemp in dgTemp.Controls[0].Controls)
| > {
| > // Check for Item or AlternatingItem DataGridItems.  Most likely you
| > // will not have TextBoxes in the Header or Footer rows.
| > if(dgiTemp.ItemType.ToString() == "Item" || dgiTemp.ItemType.ToString()
| > == "AlternatingItem")
| > {
| > // "Test" is the ID of my TextBox.
| > TextBox tbTemp = ((TextBox)(dgiTemp.FindControl("Test")));
| > // Simply get the value and return it to the screen.
| > Response.Write(tbTemp.Text + "<br>");
| > }
| > }
| >
| > Patrick Cole
| > Microsoft Developer Support
| >
| > This posting is provided "AS IS" with no warranties, and confers no
| rights.
| > You assume all risk for your use. ? 2002 Microsoft Corporation. All
rights
| > reserved.
| > --------------------
| > | Content-Class: urn:content-classes:message




| > | Subject: RE: Can't get the value of a text box using it's ID
| > | Date: Tue, 20 Aug 2002 03:56:39 -0700
| > | Lines: 94

| > | MIME-Version: 1.0
| > | Content-Type: text/plain;
| > | charset="iso-8859-1"
| > | Content-Transfer-Encoding: quoted-printable
| > | X-Newsreader: Microsoft CDO for Windows 2000
| > | X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4910.0300
| > | Thread-Index: AcJIOEMIT+k7zDRYQUCOdkoSf0V0tQ==
| > | Newsgroups: microsoft.public.dotnet.framework.aspnet.webcontrols
| > | NNTP-Posting-Host: TKMSFTNGXA11 10.201.226.39
| > | Path: cpmsftngxa10!tkmsftngp01!cpmsftngxa07
| > | Xref: cpmsftngxa10
| > microsoft.public.dotnet.framework.aspnet.webcontrols:4737
| > | X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet.webcontrols
| > |
| > | Patrick,
| > | I am trying to get the value on a button onClick event,
| > | i.e. in this case 'btnPlaceOrder_Click'.
| > | I don't think the earlier suggestion by Mathew curry
| > | would work - There is no way to iterate through each text
| > | box automatically created by the Grid/Template control?
| > | To expand slightly on what I am trying to do - I am
| > | trying to iterate though all of the order quantity boxes
| > | to see which items have been ordered.  I will then go on
| > | to create the order for the items in a DB.
| > | Thanks, Mike.

I will give it a go and let you know how I get on.

:-)

Mike.

Here's a further twist on this issue:  1) First off, how would I add a checkbox to a DataGrid that is added at runtime?  2)  How would I FindControl the new DataGrid added at runtime?

e.g.

if some event happens
    create a new datagrid
foreach row's checkbox selected in the new datagrid
    get the fieldvalue of the checkbox

Thanks,

David King

All - Thanks for your help!

Mike.