datagrid editcommand question

[bill yeager]

I'm doing an inline edit of an Admin table using the
Datagrid. There are three columns in my Admin table. I
want to dynamically disable the corresponding "CareType"
field (see below) in the grid if the record is part of an
existing relationship, so the user can't update it.
The "CareTypeID " field is the key and is invisible to the
user.

Here is the db table columns:
CareTypeID
CareType
CareTypeDesc

Here is my code in the DataGrid1.EditC ommand event:
<code>
Dim intRecdsFnd As Integer
intRecdsFnd = ValidateChild.V alidateChildTab le
("CallType", DataGrid1.DataK eys(e.Item.Item Index), CType
(Application("s trDataSource"), String))
Dim txtCareType As TextBox = DirectCast
(e.Item.FindCon trol("txtCareTy pe"), TextBox)
If intRecdsFnd = 0 Then
txtCareType.Ena bled = True
Else
txtCareType.Ena bled = False
End If
ViewState.Item( "intRecdsFn d") = Convert.ToInt32
(intRecdsFnd)
DataGrid1.EditI temIndex = e.Item.ItemInde x
BindData()
</code>

When executing the following line above in order to
disable the field that I want,
<code>
Dim txtCareType As TextBox = DirectCast(e.It em.FindControl
("txtCareType") , TextBox)
</code>
the value comes back as "Nothing"!

Here is my corresponding code in the HTML of the aspx page
for the column:
<code>
<asp:TemplateCo lumn HeaderText="Car eType">

<ItemTemplate >

<asp:Label runat="server" Text='<%# DataBinder.Eval
(Container, "DataItem.CareT ype") %>'>

</asp:Label>

</ItemTemplate>

<FooterTemplate >

<asp:TextBox id="txtFtrCareT ype" Columns="20"
runat="server" MaxLength="30"> </asp:TextBox>

</FooterTemplate>

<EditItemTempla te>

<asp:TextBox id=txtCareType Columns="20"
runat="server" MaxLength="20" Text='<%# DataBinder.Eval
(Container, "DataItem.CareT ype") %>'>

</asp:TextBox>

<asp:RequiredFi eldValidator
id="Requiredfie ldvalidator1" runat="server"
ControlToValida te="txtCareType " ErrorMessage="C areType is
required!"

CssClass="inval id" Font-Bold="True" />

</EditItemTemplat e>

</asp:TemplateCol umn>
</code>

Just to see, I get a hit if I use an ID value for the
Label in the ItemTemplate, but I don't get a hit when
trying to get the value from the EditItemTemplat e.
However, the Label value doesn't do me any good, since I
need to disable the field when the user presses the Edit
command.

I tried moving the following line:
<code>
Dim txtCareType As TextBox = DirectCast(e.It em.FindControl
("txtCareType") , TextBox)
</code>

after the BindData() routine (which executes the
DataGrid1.ItemD ataBound event), but still didn't help.
How come I am not getting a hit on the ID value of the
textbox during the EditCommand?

[bill yeager]

I solved the problem by moving the code into the
ItemDataBound event like so:

[ code ]
If e.Item.ItemType = ListItemType.Ed itItem Then 'Check
whether or not to enable the CareType
Dim intRecdsFnd As Integer
intRecdsFnd =
ValidateChild.V alidateChildTab le("CallType",
DataGrid1.DataK eys(e.Item.Item Index), CType(Applicati on
("strDataSource "), String))
Dim txtCareType As TextBox = DirectCast
(e.Item.FindCon trol("txtCareTy pe"), TextBox)
If intRecdsFnd = 0 Then
txtCareType.Ena bled = True
Else
txtCareType.Ena bled = False
End If
End If
[ / code ]

-----Original Message-----
I'm doing an inline edit of an Admin table using the
Datagrid. There are three columns in my Admin table. I
want to dynamically disable the corresponding "CareType"
field (see below) in the grid if the record is part of an
existing relationship, so the user can't update it.
The "CareTypeID " field is the key and is invisible to the
user.

Here is the db table columns:
CareTypeID
CareType
CareTypeDesc

Here is my code in the DataGrid1.EditC ommand event:
<code>
Dim intRecdsFnd As Integer
intRecdsFnd = ValidateChild.V alidateChildTab le
("CallType", DataGrid1.DataK eys(e.Item.Item Index), CType
(Application(" strDataSource") , String))
Dim txtCareType As TextBox = DirectCast
(e.Item.FindCo ntrol("txtCareT ype"), TextBox)
If intRecdsFnd = 0 Then
txtCareType.Ena bled = True
Else
txtCareType.Ena bled = False
End If
ViewState.Item( "intRecdsFn d") = Convert.ToInt32(intRecdsFnd )
DataGrid1.EditI temIndex = e.Item.ItemInde x
BindData()
</code>

When executing the following line above in order to
disable the field that I want,
<code>
Dim txtCareType As TextBox = DirectCast(e.It em.FindControl
("txtCareType" ), TextBox)
</code>
the value comes back as "Nothing"!

Here is my corresponding code in the HTML of the aspx pagefor the column:
<code>
<asp:TemplateC olumn HeaderText="Car eType">

<ItemTemplate >

<asp:Label runat="server" Text='<%# DataBinder.Eval
(Container, "DataItem.CareT ype") %>'>

</asp:Label>

</ItemTemplate>

<FooterTemplate >

<asp:TextBox id="txtFtrCareT ype" Columns="20"
runat="serve r" MaxLength="30"> </asp:TextBox>

</FooterTemplate>

<EditItemTempla te>

<asp:TextBox id=txtCareType Columns="20"
runat="serve r" MaxLength="20" Text='<%# DataBinder.Eval
(Container, "DataItem.CareT ype") %>'>

</asp:TextBox>

<asp:RequiredFi eldValidator
id="Requiredfi eldvalidator1" runat="server"
ControlToValid ate="txtCareTyp e" ErrorMessage="C areType is
required!"

CssClass="inval id" Font-Bold="True" />

</EditItemTemplat e>

</asp:TemplateCol umn>
</code>

Just to see, I get a hit if I use an ID value for the
Label in the ItemTemplate, but I don't get a hit when
trying to get the value from the EditItemTemplat e.
However, the Label value doesn't do me any good, since I
need to disable the field when the user presses the Edit
command.

I tried moving the following line:
<code>
Dim txtCareType As TextBox = DirectCast(e.It em.FindControl
("txtCareType" ), TextBox)
</code>

after the BindData() routine (which executes the
DataGrid1.Item DataBound event), but still didn't help.
How come I am not getting a hit on the ID value of the
textbox during the EditCommand?
.