Web Forms :: Binding A Value To A Control's Property Before OnInit Is Called For The Control
Jun 5, 2010
I just began to look into custom server controls a couple days ago, and while I'm happy with my progress overall, I'm stuck on an issue.
Conditional.cs
[code]....
EDIT 2: It seems that the problem now is that I cannot set a parameter with a databound value before the control is initialized
<cv:conditional id="condTest" runat="server" selector='<%# DataBinder.Eval(Container, "DataItem") != null %>'>...
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Mar 11, 2010
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But just today, I encountered a situation where OnInit for a control seems to be called after the normal OnInit has been done for everyone else. See stack below. It seems that during the page's PreRender, the control's OnInit is called as it is being dynamically added.
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[HttpException (0x80004005): The control collection cannot be modified during DataBind, Init, Load, PreRender or Unload phases.]
System.Web.UI.ControlCollection.Add(Control child) +8678663
MyCompany.Web.Controls.SetStartPageWrapper.Initialize()
MyCompany.Web.Controls.SetStartPageWrapper.OnInit(EventArgs e)
System.Web.UI.Control.InitRecursive(Control namingContainer) +333
System.Web.UI.Control.InitRecursive(Control namingContainer) +210
System.Web.UI.Control.AddedControl(Control control, Int32 index) +198
System.Web.UI.ControlCollection.Add(Control child) +80
MyCompany.Web.Controls.PageHeader.OnPreRender(EventArgs e) in
System.Web.UI.Control.PreRenderRecursiveInternal() +80
System.Web.UI.Control.PreRenderRecursiveInternal() +171
System.Web.UI.Control.PreRenderRecursiveInternal() +171
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +842
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[Code]....
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[Code]....
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[Code]....
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