Set Enabled or Visible on gridview cell contols?

[=?Utf-8?B?U2F2dm91bGlkaXMgSW9yZGFuaXM=?=]

Can I set the Enabled or Visible properties of the controls (textboxes,
checkboxes) displayed by default in edit mode, depending on the value of some
other column? Or must I convert the column to a template column first? What I
mean is, I can correctly get the value of the default textbox in a gridview
cell when edited, using:

s = CType(grd_users.Rows(index).Cells(4).Controls(0), TextBox).Text

but I can't set that textbox to disabled or hidden using

CType(grd_users.Rows(index).Cells(4).Controls(0), TextBox).enabled=false or
CType(grd_users.Rows(index).Cells(4).Controls(0), TextBox).visible=false

although I have intellisence for them.
The message I get is:
"Specified argument was out of the range of valid values. Parameter name:
index"

Why?

[=?Utf-8?B?U2F2dm91bGlkaXMgSW9yZGFuaXM=?=]

Also, how can I change the ReadOnly property of a field, when it's about to
enter the edit mode?

[Eliyahu Goldin]

You must've been looking in different places.

In the same place, if you don't get an exception because of index in
s = CType(grd_users.Rows(index).Cells(4).Controls(0), TextBox).Text

you can't get it in
CType(grd_users.Rows(index).Cells(4).Controls(0), TextBox).enabled=false

since index is used before you get to Enabled property.

--
Eliyahu Goldin,
Software Developer
Microsoft MVP [ASP.NET]
http://msmvps.com/blogs/egoldin
http://usableasp.net
"Savvoulidis Iordanis" <Sa*****************@discussions.microsoft.comwrot e
in message news:45**********************************@microsof t.com...

Can I set the Enabled or Visible properties of the controls (textboxes,
checkboxes) displayed by default in edit mode, depending on the value of
some
other column? Or must I convert the column to a template column first?
What I
mean is, I can correctly get the value of the default textbox in a
gridview
cell when edited, using:

s = CType(grd_users.Rows(index).Cells(4).Controls(0), TextBox).Text

but I can't set that textbox to disabled or hidden using

CType(grd_users.Rows(index).Cells(4).Controls(0), TextBox).enabled=false
or
CType(grd_users.Rows(index).Cells(4).Controls(0), TextBox).visible=false

although I have intellisence for them.
The message I get is:
"Specified argument was out of the range of valid values. Parameter name:
index"

Why?

[Eliyahu Goldin]

RowEditing event should be good for this.

--
Eliyahu Goldin,
Software Developer
Microsoft MVP [ASP.NET]
http://msmvps.com/blogs/egoldin
http://usableasp.net
"Savvoulidis Iordanis" <Sa*****************@discussions.microsoft.comwrot e
in message news:C3**********************************@microsof t.com...

Also, how can I change the ReadOnly property of a field, when it's about
to
enter the edit mode?

[=?Utf-8?B?U2F2dm91bGlkaXMgSW9yZGFuaXM=?=]

What I need is a code excerpt. I couldn't manage to write it properly. I
can't event get correct object reference to have intellisence for .Readonly

[=?Utf-8?B?U2F2dm91bGlkaXMgSW9yZGFuaXM=?=]

Boh the following statements are used in RowCommand event. The 2nd one gives
the exception

s = CType(grd_users.Rows(index).Cells(4).Controls(0), TextBox).Text

CType(grd_users.Rows(index).Cells(4).Controls(0), TextBox).enabled=false

Why?