Index was out of range.Must be non-negative and less than the size of the collection

Question

Any idea how to fix this issue. Thanks

string[] projectNames = { "X_Standard_Project", "Y_Standard_Project" };

for (int i = 0; i < projectNames.Length; i++)
            {
                this.UIMap.Modified_RightclickLibraryProjandSelectUse(projectNames[i]);
            }

public void Modified_RightclickLibraryProjandSelectUse(string projectName)
        {
            #region Variable Declarations
            WinTreeItem uIX_Standard_Project_TreeItem = this.UITrilliumControlCenteWindow1.UIItemWindow1.UIProjectsTreeItem.UIX_Standard_Project_TreeItem;
            WinMenuItem uIUseMenuItem = this.UIItemWindow2.UIContextMenu.UIUseMenuItem;
            #endregion

            WinTreeItem UISearchTreeItem = new WinTreeItem(this.UIControlGridWindow1.UIItemWindow1);
            UISearchTreeItem.SearchProperties[WinTreeItem.PropertyNames.Name] = projectName + "_Test";

            UITestControlCollection UISearchReslts = UISearchTreeItem.FindMatchingControls();// It finds the control in the tree list and the count should be 1


            WinTreeItem UIWantedTreeItem = UISearchReslts[UISearchReslts.Count - 1] as WinTreeItem; //fails as count is 0.

           }

Answer 1

tsingh2,

if this line:

  UITestControlCollection UISearchReslts = UISearchTreeItem.FindMatchingControls();

is supposed to return a collection that contains 1 item but it fails and doesn't find any controls,

then this line:

WinTreeItem UIWantedTreeItem = UISearchReslts[UISearchReslts.Count - 1] as WinTreeItem;

will throw an index out of range exception because UISearchReslts.Count is already 0 and the indexer must be a zero-based, non-negative integer.

In other words,

0 - 1 = -1   and you can't use -1 as value for an index, i.e. UISearchReslts[-1]...

Hope it helps,

Answer 2

Thanks Griswald..But your solution doesn't help.

I still get error "Index out of range"

Answer 3

Put a breakpoint just after this line:

UITestControlCollection UISearchReslts = UISearchTreeItem.FindMatchingControls();

While the execution has paused, hover over UISearchReslts.

If the Count property is equal to 0, the code that follows will always fail.

If you give us an idea of what you are trying to accomplish, we may be able to provide sample code.

Answer 4

Thanks,

Like I mentioned in my original comment

I am passing project name "X_Standard_Project" and adding string "_Test" to make it "X_Standard_Project_Test"

In the called function based on the UI Tree view we have list of project under it like "X_Standard_Project_Test" and 

"Y_Standard_Project_Test" , so I expect it to find the project "X_Standard_Project_Test" in the list.

Answer 5

The search will be more likely to find something if you specify the WinTree control that should contain the WinTreeItem you are looking for, instead of using "UIItemWindow1":

WinTreeItem UISearchTreeItem = new WinTreeItem(YourWinTree);

Also, if any part of the tree needs to be expanded, you will need to do that recursively.

Answer 6

It does not work when my pass it as follows:
WinTreeItem UISearchTreeItem = new WinTreeItem(uIX_Standard_Project_TreeItem);

Answer 7

According to your code, uIX_Standard_Project_TreeItem is a WinTreeItem and not a WinTree. You need to find the WinTree control that is a parent to your WinTreeItem.

Answer 8

Your shared code shows that the New WinTreeItem object you are creating is not in the Correct Hierarchy. Please see the method below...

public void Modified_RightclickLibraryProjandSelectUse(string projectName)
        {
            #region Variable Declarations
            WinTreeItem uIX_Standard_Project_TreeItem = this.UITrilliumControlCenteWindow1.UIItemWindow1.UIProjectsTreeItem.UIX_Standard_Project_TreeItem;
            WinMenuItem uIUseMenuItem = this.UIItemWindow2.UIContextMenu.UIUseMenuItem;
            #endregion

            WinTreeItem UISearchTreeItem = new WinTreeItem(this.UITrilliumControlCenteWindow1.UIItemWindow1.UIProjectsTreeItem);
            UISearchTreeItem.SearchProperties[WinTreeItem.PropertyNames.Name] = projectName + "_Test";

            UITestControlCollection UISearchReslts = UISearchTreeItem.FindMatchingControls();// It finds the control in the tree list and the count should be 1

            WinTreeItem UIWantedTreeItem = UISearchReslts[UISearchReslts.Count - 1] as WinTreeItem; //fails as count is 0.

           }

You are expecting to get always one TreeItem with Specified Name so instead of using FindMatchingControls() you should use only Find() or go for any Property Check so this Control would be searched on UI.

     public void Modified_RightclickLibraryProjandSelectUse(string projectName)
        {
            #region Variable Declarations
            WinTreeItem uIX_Standard_Project_TreeItem = this.UITrilliumControlCenteWindow1.UIItemWindow1.UIProjectsTreeItem.UIX_Standard_Project_TreeItem;
            WinMenuItem uIUseMenuItem = this.UIItemWindow2.UIContextMenu.UIUseMenuItem;
            #endregion

            WinTreeItem UIWantedTreeItem = new WinTreeItem(this.UITrilliumControlCenteWindow1.UIItemWindow1.UIProjectsTreeItem);
            UIWantedTreeItem.SearchProperties[WinTreeItem.PropertyNames.Name] = projectName + "_Test";

            UIWantedTreeItem.Find(); // This returns the True and Pass if match found else it would throw the error...

           }

Thanks

---

Brajpal

Answer 9

Hi Brajpal,

You suggestion does find the item, but it always find the first item in the tree. It does not increment in sequence

for the rest of the items in the tree list.

Any suggestions

Answer 10

1- Please cross Check which is the WinTree Control for TreeItems.

if UIProjectsTreeItem is not a WinTree Controls then Try to use

WinTreeItem UIWantedTreeItem = new WinTreeItem(this.UITrilliumControlCenteWindow1.UIItemWindow1);

2- When you are adding search Property "Name" then it is expected to get only one...

3- If you are looking for all the TreeItems then try GetChildren() for WinTree Control.

Thanks

---

Brajpal

Answer 11

Hi Brajpal,

Can you provide some example of how to use getChildren()

Thanks,

Answer 12

I found the solution

All I have to do is following and it search the name in the list

WinTreeItem(this.UITrilliumControlCenteWindow1.UIItemWindow1.UIProjectsTreeItem);
UIWantedTreeItem.SearchProperties[WinTreeItem.PropertyNames.Name] = projectName + "_Test";

UIWantedTreeItem.DrawHighlight();

Thanks for everyone's help.