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.NET Forum / ASP.NET / General / February 2006Dynamicly adding controls after Page_Load event
Hi, I dynamicly add custom control in SelectedIndexChanged even of GridView which is firing after Page_Load. My control is not being rendered to page becouse of that (I assume). How to avoid this situation? Sample below protected void dgrCompanies_SelectedIndexChanged(object sender, EventArgs e) { GoogleControl MyGoogleControl = new GoogleControl (); PlaceHolderForMap.Controls.Add(MyGoogleControl); } No, your conrol will be rendered after PreRender which happens after this event. Have you set your control to visible Have you positioned your control Have you checked the Z-Order of the control Is the PlaceHolder visible. Have you checked that this should appear with no data in it for example ?  SignatureTerry Burns http://TrainingOn.net Hi, I dynamicly add custom control in SelectedIndexChanged even of GridView which is firing after Page_Load. My control is not being rendered to page becouse of that (I assume). How to avoid this situation? Sample below protected void dgrCompanies_SelectedIndexChanged(object sender, EventArgs e) { GoogleControl MyGoogleControl = new GoogleControl (); PlaceHolderForMap.Controls.Add(MyGoogleControl); } Control is not positioned on webpage at all. My understanding that I can load it programmatically without putting it on webpage (one reference is set at <%@ reference Placeholder is visible. Code below works fine for TextBox control for example but not for custom control. No, your conrol will be rendered after PreRender which happens after this event. Have you set your control to visible Have you positioned your control Have you checked the Z-Order of the control Is the PlaceHolder visible. Have you checked that this should appear with no data in it for example ? -- Terry Burns http://TrainingOn.net "GS" <nospam@nowhere.com> wrote in message news:ObgfvmZMGHA.1532@TK2MSFTNGP12.phx.gbl... Hi, I dynamicly add custom control in SelectedIndexChanged even of GridView which is firing after Page_Load. My control is not being rendered to page becouse of that (I assume). How to avoid this situation? Sample below protected void dgrCompanies_SelectedIndexChanged(object sender, EventArgs e) { GoogleControl MyGoogleControl = new GoogleControl (); PlaceHolderForMap.Controls.Add(MyGoogleControl); } Hold on, your original post asked. >My control is not being rendered to page becouse of that (I assume). So what is it you think isnt happening that you think should ? SignatureTerry Burns http://TrainingOn.net Control is not positioned on webpage at all. My understanding that I can load it programmatically without putting it on webpage (one reference is set at <%@ reference Placeholder is visible. Code below works fine for TextBox control for example but not for custom control. "Terry Burns" <me@mine.com> wrote in message news:%23rkEKAaMGHA.3196@TK2MSFTNGP09.phx.gbl... No, your conrol will be rendered after PreRender which happens after this event. Have you set your control to visible Have you positioned your control Have you checked the Z-Order of the control Is the PlaceHolder visible. Have you checked that this should appear with no data in it for example ? -- Terry Burns http://TrainingOn.net "GS" <nospam@nowhere.com> wrote in message news:ObgfvmZMGHA.1532@TK2MSFTNGP12.phx.gbl... Hi, I dynamicly add custom control in SelectedIndexChanged even of GridView which is firing after Page_Load. My control is not being rendered to page becouse of that (I assume). How to avoid this situation? Sample below protected void dgrCompanies_SelectedIndexChanged(object sender, EventArgs e) { GoogleControl MyGoogleControl = new GoogleControl (); PlaceHolderForMap.Controls.Add(MyGoogleControl); } Hi, Dynamical controls would need to be added on every request. Control instances aren't stored anywehere, and as you create them initially in code, you are also responsible for creating them on postback (subsequently as long as control is "in action") FYI: http://aspnet.4guysfromrolla.com/articles/092904-1.aspx SignatureTeemu Keiski ASP.NET MVP, AspInsider Finland, EU http://blogs.aspadvice.com/joteke Hi, I dynamicly add custom control in SelectedIndexChanged even of GridView which is firing after Page_Load. My control is not being rendered to page becouse of that (I assume). How to avoid this situation? Sample below protected void dgrCompanies_SelectedIndexChanged(object sender, EventArgs e) { GoogleControl MyGoogleControl = new GoogleControl (); PlaceHolderForMap.Controls.Add(MyGoogleControl); } Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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