Hi,

 I have the following Scenario:

 1. A composite Control called ctrl1.

2. In order to add it to a webpartzone at runtime i have written a wrapper class. This wrapper class inherits from the webpart calss and creates an instance of ctrl1 and adds it to the controls collection in the "CreateChildControls()" method.

3. On the aspx page onInit i am calling the webPartmanager.AddwebPartmethod and in this i am adding an instance of the wrapper class.

4. All this is enabling me to add the composite control to the web part zone at runtime.

5. However when i click on my composite control despite having a postback i am still seeing a new instance of ctrl1 being created and added to this web part. This is NOT the expected behaviour for me.

 Please suggest how i can resolve this. I have tried overriding EnsureChildControls() but it doesnt help much.

Please advice.

Thanks and Regards

Uma

On add event did you tried this:

if (WebPartManager1.WebParts[Name_Of_Webpart]!=null)
{
    //add code
}

/*
else
{//do nothing}
*/

Hi,

 Sorry, whatever you suggested doesn't work.

 The reason being that The webpart manager does not personalize its contents in a GET method.

 So when a postback occurs its contents are empty. So comparing for "name of web part" or for "webparts.count" etc will all fail.

Shall publish the solution when i find it. I think i would need to override the webPartManager class and write a custom manager.

Am working on it and shall confirm once it works.

You are correct. I tried it but it doesn't work.

However in my project (Same requirement as of yours) I solved it as follows:


public static bool IsWebpartInMemory(WebPartManager WPM, string TitleOfControlToBeAdded)
{
foreach(WebPart w in WPM.Webparts)
  (if w.Title==Title)
   return true; //Yes it already exists...So dont add
else
  return false; //No it doesnot exists. So add it.

}

If you find a better solution, do post it please.

Hi,

 The solution to this problem is to write a custom web part manager.

 In that have a public method called SetDirty().

This must internally call the SetPersonalizationDirty and that will solve the problem.

 Also ensure that u are checking for postback or not inorder to add to the web part.

This has worked for me.