I'm trying to set up a user control and change some values from the aspx
page, but I keep running into trouble. What I really would like to do is be
able to set a Label.Text in the user control from an aspx page.
If I open up a static method to set the Label in the code-behind of the user
control(uc), then the code in the uc doesn't recognize that the label exists
(only if the method is a static (shared) method). If I set up a private
method, then the aspx page can't access the method, but then the uc does
recognize that the conrtol is there. Catch 22.
The old ASP way, I would just set the variable to the correct value on the
ASP page and the include would write it in a <%=SOMEVAR%>. How do I
accomplish this with user controls, or in this case, should I just resort to
an include file?
Andrea
4  1362 
Your second paragraph made my head hurt from trying to figure out what it
meant, so I'm just going to ignore that. Let's just stick to changing a
property of a User Control in a WebForm. This is all object-oriented, so
let's start by talking about what these Controls are, which is objects. The
Page is an object/class, as is the WebForm contained in the Page, as is any
User Control that you add to a WebForm. Because these are all classes, there
are hidden (protected/private) and accessible (public) members. In order to
access a property or field in the User Control, you must have a public
property or field in the User Control which exposes it (makes it accessible
to other classes).
Next, you need to grab a reference to the User Control to set that
property/field's value. This can be done using the Control.FindCon trol()
method, which takes a string as its argument, representing the id property
of the Control being sought. The FindControl() Method searches the Controls
Collection of a Control and finds the Child Control that has the id that is
passed, and returns a reference to that Control. It works only on the
immediate Children of a Control, so you need to identify the Control that
contains it. Most likely, this will be the WebForm (not the Page).
--
HTH,
Kevin Spencer
..Net Developer
Microsoft MVP
Big things are made up
of lots of little things.
"Andrea Williams" <an*******@hotm ail.IHATESpam.c om> wrote in message
news:#R******** ******@TK2MSFTN GP10.phx.gbl... I'm trying to set up a user control and change some values from the aspx
page, but I keep running into trouble. What I really would like to do is
be able to set a Label.Text in the user control from an aspx page.
If I open up a static method to set the Label in the code-behind of the
user control(uc), then the code in the uc doesn't recognize that the label
exists (only if the method is a static (shared) method). If I set up a private
method, then the aspx page can't access the method, but then the uc does
recognize that the conrtol is there. Catch 22.
The old ASP way, I would just set the variable to the correct value on the
ASP page and the include would write it in a <%=SOMEVAR%>. How do I
accomplish this with user controls, or in this case, should I just resort
to an include file?
Andrea
Ok, at first I didn't understand your explaination, but a search on the
FindControl() method in the MSDN Lib got me thinking and experimenting, now
I understand.
THANKS! I am now able to do what I need! :-))
Andrea
"Kevin Spencer" <ke***@takempis .com> wrote in message
news:%2******** ********@TK2MSF TNGP10.phx.gbl. .. Your second paragraph made my head hurt from trying to figure out what it
meant, so I'm just going to ignore that. Let's just stick to changing a
property of a User Control in a WebForm. This is all object-oriented, so
let's start by talking about what these Controls are, which is objects.
The Page is an object/class, as is the WebForm contained in the Page, as is
any User Control that you add to a WebForm. Because these are all classes,
there are hidden (protected/private) and accessible (public) members. In order
to access a property or field in the User Control, you must have a public
property or field in the User Control which exposes it (makes it
accessible to other classes).
Next, you need to grab a reference to the User Control to set that
property/field's value. This can be done using the Control.FindCon trol()
method, which takes a string as its argument, representing the id property
of the Control being sought. The FindControl() Method searches the
Controls Collection of a Control and finds the Child Control that has the id that
is passed, and returns a reference to that Control. It works only on the
immediate Children of a Control, so you need to identify the Control that
contains it. Most likely, this will be the WebForm (not the Page).
--
HTH,
Kevin Spencer
.Net Developer
Microsoft MVP
Big things are made up
of lots of little things.
"Andrea Williams" <an*******@hotm ail.IHATESpam.c om> wrote in message
news:#R******** ******@TK2MSFTN GP10.phx.gbl... I'm trying to set up a user control and change some values from the aspx
page, but I keep running into trouble. What I really would like to do
is be able to set a Label.Text in the user control from an aspx page.
If I open up a static method to set the Label in the code-behind of the user control(uc), then the code in the uc doesn't recognize that the label
exists (only if the method is a static (shared) method). If I set up a private
method, then the aspx page can't access the method, but then the uc does
recognize that the conrtol is there. Catch 22.
The old ASP way, I would just set the variable to the correct value on
the ASP page and the include would write it in a <%=SOMEVAR%>. How do I
accomplish this with user controls, or in this case, should I just
resort to an include file?
Andrea
Ok, another problem, FindControl only seems to work on Web Controls and not
HTML controls.... Am I missing something?
Andrea
"Kevin Spencer" <ke***@takempis .com> wrote in message
news:%2******** ********@TK2MSF TNGP10.phx.gbl. .. Your second paragraph made my head hurt from trying to figure out what it
meant, so I'm just going to ignore that. Let's just stick to changing a
property of a User Control in a WebForm. This is all object-oriented, so
let's start by talking about what these Controls are, which is objects.
The Page is an object/class, as is the WebForm contained in the Page, as is
any User Control that you add to a WebForm. Because these are all classes,
there are hidden (protected/private) and accessible (public) members. In order
to access a property or field in the User Control, you must have a public
property or field in the User Control which exposes it (makes it
accessible to other classes).
Next, you need to grab a reference to the User Control to set that
property/field's value. This can be done using the Control.FindCon trol()
method, which takes a string as its argument, representing the id property
of the Control being sought. The FindControl() Method searches the
Controls Collection of a Control and finds the Child Control that has the id that
is passed, and returns a reference to that Control. It works only on the
immediate Children of a Control, so you need to identify the Control that
contains it. Most likely, this will be the WebForm (not the Page).
--
HTH,
Kevin Spencer
.Net Developer
Microsoft MVP
Big things are made up
of lots of little things.
"Andrea Williams" <an*******@hotm ail.IHATESpam.c om> wrote in message
news:#R******** ******@TK2MSFTN GP10.phx.gbl... I'm trying to set up a user control and change some values from the aspx
page, but I keep running into trouble. What I really would like to do
is be able to set a Label.Text in the user control from an aspx page.
If I open up a static method to set the Label in the code-behind of the user control(uc), then the code in the uc doesn't recognize that the label
exists (only if the method is a static (shared) method). If I set up a private
method, then the aspx page can't access the method, but then the uc does
recognize that the conrtol is there. Catch 22.
The old ASP way, I would just set the variable to the correct value on
the ASP page and the include would write it in a <%=SOMEVAR%>. How do I
accomplish this with user controls, or in this case, should I just
resort to an include file?
Andrea
Ok, another problem, FindControl only seems to work on Web Controls and not
HTML controls.... Am I missing something?
Andrea
"Kevin Spencer" <ke***@takempis .com> wrote in message
news:%2******** ********@TK2MSF TNGP10.phx.gbl. .. Your second paragraph made my head hurt from trying to figure out what it
meant, so I'm just going to ignore that. Let's just stick to changing a
property of a User Control in a WebForm. This is all object-oriented, so
let's start by talking about what these Controls are, which is objects.
The Page is an object/class, as is the WebForm contained in the Page, as is
any User Control that you add to a WebForm. Because these are all classes,
there are hidden (protected/private) and accessible (public) members. In order
to access a property or field in the User Control, you must have a public
property or field in the User Control which exposes it (makes it
accessible to other classes).
Next, you need to grab a reference to the User Control to set that
property/field's value. This can be done using the Control.FindCon trol()
method, which takes a string as its argument, representing the id property
of the Control being sought. The FindControl() Method searches the
Controls Collection of a Control and finds the Child Control that has the id that
is passed, and returns a reference to that Control. It works only on the
immediate Children of a Control, so you need to identify the Control that
contains it. Most likely, this will be the WebForm (not the Page).
--
HTH,
Kevin Spencer
.Net Developer
Microsoft MVP
Big things are made up
of lots of little things.
"Andrea Williams" <an*******@hotm ail.IHATESpam.c om> wrote in message
news:#R******** ******@TK2MSFTN GP10.phx.gbl... I'm trying to set up a user control and change some values from the aspx
page, but I keep running into trouble. What I really would like to do
is be able to set a Label.Text in the user control from an aspx page.
If I open up a static method to set the Label in the code-behind of the user control(uc), then the code in the uc doesn't recognize that the label
exists (only if the method is a static (shared) method). If I set up a private
method, then the aspx page can't access the method, but then the uc does
recognize that the conrtol is there. Catch 22.
The old ASP way, I would just set the variable to the correct value on
the ASP page and the include would write it in a <%=SOMEVAR%>. How do I
accomplish this with user controls, or in this case, should I just
resort to an include file?
Andrea
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