Answers

• YuriKuznetsov USMember ✭✭✭

  June 2018

  In your own DataSource you need to override method

      public override bool ItemExpandable(NSOutlineView outlineView, NSObject item) 
  

  and return true for every item.

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• qtsoft Member ✭✭

  June 2018

  I have this function in My DataSource class but it expand when i click on item in outline view. But i want all item in expanded state automatically(without any click), when they are being add first time adding in outline view.

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• YuriKuznetsov USMember ✭✭✭

  June 2018 edited June 2018 Accepted Answer

  You can create function

      public void ExpandTable(NSOutlineView tbl) {
          for (int i = 0; i < tbl.RowCount; i++) {
              var rowItem = (MyClass)tbl.ItemAtRow(i);
  
              if (rowItem.HaveChildren)  
                  tbl.ExpandItem(rowItem);
          }
      }
  

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• qtsoft Member ✭✭

  June 2018

  Hi,

  I have created a function which is performing(executing) very heavy task. In this I am using read and write operation. When ever this function executes that time User Interface seems hanging. That time a coloured moving circle being display and seems process has been stuck. What should me to do to overcome this problem.

  0
• ChrisHamons USForum Administrator, Xamarin Team Xamurai

  June 2018 edited June 2018

  The standard answer is to move all heavy work off of the UI thread. I would start with this iOS documentation (https://docs.microsoft.com/en-us/xamarin/ios/user-interface/ios-ui/ui-thread), as the general concept is the same.

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