RegisterExpandoAttribute with ajax

[Jeremy]

We've developed various custom controls that use
Page.ClientScript.RegisterExpandoAttribute. This method creates a variable
at the bottom of the page and populates its properties.

My problem is that my control is in the edit template of a grid view. When
initially viewing the page, the control isn't created so
registerexpandoattribute doesn't fire. When I click edit the grid shows the
edit template, causing the control to get created and now
RegisterExpandoAttribute fires, but because it's in the update panel, the
javascript variable and it's properties won't get rendered. How should this
be handled in a control that could be used in an update panel?

[bruce barker]

try (air code):

public void RegisterExpando(Control ctl, string name, string value)
{
ScriptManager.RegisterClientScriptBlock(ctl,
typeof(Page),
"expando" + name,
string.Format(@"
$get('{0}').{1}='{2}';
", ctl.ClientID,name,JQuote(value)),
true);
}

// sample not complete
public string JQuote(string s)
{
s = s.Replace(@"\",@"\\");
s = s.Replace("'","\'");
s = s.Replace("\n",@"\n");
return s;
}
-- bruce (sqlwork.com)
Jeremy wrote:

We've developed various custom controls that use
Page.ClientScript.RegisterExpandoAttribute. This method creates a variable
at the bottom of the page and populates its properties.

My problem is that my control is in the edit template of a grid view. When
initially viewing the page, the control isn't created so
registerexpandoattribute doesn't fire. When I click edit the grid shows the
edit template, causing the control to get created and now
RegisterExpandoAttribute fires, but because it's in the update panel, the
javascript variable and it's properties won't get rendered. How should this
be handled in a control that could be used in an update panel?

[Teemu Keiski]

I think ScriptManager has also RegisterExpandoAttribute method. Doesn't that
work?
http://ajax.asp.net/docs/mref/M_Syst..._fc08db2e.aspx

It should be compatible with partial page rendering.

--
Teemu Keiski
AspInsider, ASP.NET MVP
http://blogs.aspadvice.com/joteke
http://teemukeiski.net


"Jeremy" <no****@please.comwrote in message
news:%2****************@TK2MSFTNGP02.phx.gbl...

We've developed various custom controls that use
Page.ClientScript.RegisterExpandoAttribute. This method creates a
variable at the bottom of the page and populates its properties.

My problem is that my control is in the edit template of a grid view.
When initially viewing the page, the control isn't created so
registerexpandoattribute doesn't fire. When I click edit the grid shows
the edit template, causing the control to get created and now
RegisterExpandoAttribute fires, but because it's in the update panel, the
javascript variable and it's properties won't get rendered. How should
this be handled in a control that could be used in an update panel?