I have a strange problem. Let's look at that code:
TreeNode tn = TreeView1.FindNode("2009/08/12 (1)"); //OK, the Node is found
Now, I need to delete that node:
(IT DOESN'T WORK !)
(e.g. (I know that I don't need to use TreeView1.FindNode() method, but i = -1))
TreeNode tn1 = TreeView1.FindNode(tn.ValuePath);
int i = TreeView1.Nodes.IndexOf(tn1);
or
TreeView1.Nodes.Remove(tn);
The problem is, the codes above doesn't work, I mean, the node isn't removed, why ?
The TreeView looks like that:
alt text http://img130.imageshack.us/img130/230/71970321.png
It seems that the TreeView control in .net only allows to remove First Level Nodes, so if the node you are trying to delete is not this kind of node, you need to delete it trough its parent, using something like this:
Dim Padre As TreeNode = TreeView1.SelectedNode.Parent
If (Padre Is Nothing) Then
TreeView1.Nodes.Remove(TreeView1.SelectedNode)
Else
Padre.ChildNodes.Remove(TreeView1.SelectedNode)
End If
Hope it helps!
Are you sure that you've selected the node properly? If TreeView1.Nodes.IndexOf(tn1) is returning -1, this indicates the node can't be found.
Related
The UI is as following:
The tool "AutoIt Window Info" can only locate the elements in red (red rectangle area), the sub items can not be located.
So how can I expand or operate these items？
Usually Windows controls can be accessed using keystrokes as well.
In the screen-dump the Farmtt element is selected. That would be your starting point.
You may try:
Send("{DOWN}") Move down an element.
Send("{TAB}") Navigate to next control (button, checkbox, etc)
Send("{NumPadMult}") Recursively expands folders in a SysTreeView32.
Send("{ENTER}") ENTER key on the main keyboard
etc.
Reference:
https://www.autoitscript.com/autoit3/docs/appendix/SendKeys.htm
There are two things over here:
1) Use the following code snippet:
;Gets the handle for the text
Func readFirstlevelTreeNodes($hWndCtrl)
Local $firstItemHandle = _GUICtrlTreeView_GetFirstItem ($hWndCtrl)
Local $iCount = _GUICtrlTreeView_GetSiblingCount( $hWndCtrl, $firstItemHandle )
Dim $aRet[$iCount]
$aRet[0] = $firstItemHandle
For $index = 1 To $iCount - 1
$aRet[$index] = _GUICtrlTreeView_GetNextSibling ( $hWndCtrl, $firstItemHandle )
$firstItemHandle = $aRet[$index]
Next
getTreeNodeTextList($hWndCtrl,$aRet)
EndFunc
; Gets the text for given sibling node handle lists
Func getTreeNodeTextList($hWndCtrl,$aRet)
ConsoleWrite("Tree Node first level list"&#CRLF)
For $index = 0 To Ubound($aRet) -1
ConsoleWrite(_GUICtrlTreeView_GetText ( $hWndCtrl, $aRet[$index] )&#CRLF)
Next
EndFunc
You may see the output for the first level tree nodes.
2) If you still dont see the output then please verify the control handle values and window handles. If they are correct and it still doesnt show the first level tree nodes then try running your sciTE editor as administrator.
I think this should help.
I'm attempt to commit mostly all new objects to the database, apart from the user. I'm new to entity framework and im not sure how to combat this error.
Error on line _orderDetail.CalenderItems.Add(_newCalendarItem):
The object could not be added or attached because its EntityReference has an EntityKey property value that does not match the EntityKey for this object.
Code:
_db.Orders.AddObject(_order)
For Each n In _namelist
_db.Names.AddObject(n)
Next
For Each n In _namelist
For i As Integer = 1 To _copies
Dim _orderDetail As New OrderDetail
_db.OrderDetails.AddObject(_orderDetail)
_orderDetail.Name = n
_orderDetail.Order = _order
For Each c In _calendarItems
Dim _newCalendarItem As New CalenderItem
_newCalendarItem.Image = c.Image
_newCalendarItem.YearMonth = c.YearMonth
_orderDetail.CalenderItems.Add(_newCalendarItem)
Next
Next
Next
_db.SaveChanges()
I believe I need to add add an entity reference but I'm not sure how. Can anyone point me in the right direction
As dnndeveloper says, your answer is ObjectContext.CreateObject<T>.
So you're gonna want -
Dim ci = _db.CreateObject(Of CalenderItem)()
ci.OrderDetail = _orderDetail
ci.Image = c.image
ci.YearMonth = c.YearMonth
_orderDetail.CalenderItems.Add(ci)
or something along those lines. I've run into this issue a couple of times and this has worked so far.
HTH
Instead of creating a "new calendaritem" you should use _db.OrderDetails.CalendarItem.New() etc... either that or set _newCalendarItem.EntityKey to null.
I have a quick question about JQuery. I have dynamically generated paragraphs with id's that are incremented. I would like to take information from that page and bring it to my main page. Unfortunately I am unable to read the dynamically generated paragraph IDs to get the values. I am trying this:
var Name = ((data).find("#Name" + id).text());
The ASP.NET code goes like this:
Dim intI As Integer = 0
For Each Item As cItem in alProducts1
Dim pName As New System.Web.UI.HtmlControls.HtmlGenericControl("p")
pName.id = "Name" & intI.toString() pName.InnerText = Item.Name controls.Add(pName) intI += 1
Next
Those name values are the values I want...Name1, name2, name3 and I want to get them individually to put in their own textbox... I'm taking the values from the ASP.NET webpage and putting them into an AJAX page.
Your question is not clear about your exact requirement but you can get the IDs of elements with attr method of jQuery, here is an example:
alert($('selector').attr('id'));
You want to select all the elements with the incrementing ids, right?
// this will select all the elements
// which id starts with 'Name'
(data).find("[id^=Name]")
Thanks for the help everyone. I found the solution today however:
var Name = ($(data).find('#Name' + id.toString()).text());
I forgot the .toString() part and that seems to have made the difference.
There's got to be an easier way to do what I came up with here:
int lastDayInList = ddlBirthDay.Items.IndexOf(ddlBirthDay.Items[ddlBirthDay.Items.Count -1]);
This will give you the last item in a drop down list.
ListItem lastItem = ddlBirthDay.Items[ddlBirthDay.Items.Count-1]
In your code, it looks like you are getting the index of the last item. However, the accessible index of the last item will be -1 of the count.
If you are using .net v3.5 then Linq is an option, too.
ListItem latItem = ddlBirthday.Items.Last();
ListItem latItem = ddlBirthday.Items.LastOrDefault();
I encounter this problem repeatedly, and haven't a clue what is causing it. I get an exception in the DataBind: SelectedValue which is invalid because it does not exist in the list of items.
Here are some important pieces of information:
I reload listOrgs periodically when the underlying data has changed.
The Organization.DTListAll call returns 2 Int, String pairs.
There are no duplicate or null values in the returned data
After the first two lines below, listOrgs.Items.Count is 0, and the Selected Value is 0
The selected value after the DataBind operation executes is the ID value from the first row in the data
This exception happens the very first time this code is executed after a fresh page load
listOrgs.Items.Clear();
listOrgs.SelectedValue = "0";
listOrgs.DataSource = new Organization().DTListAll(SiteID);
listOrgs.DataTextField = "OrganizationName";
listOrgs.DataValueField = "OrganizationID";
listOrgs.DataBind();
Apparently the solution I posted wasn't entirely effective... Eventually in my application I changed to this:
listOrgs.Items.Clear();
listOrgs.SelectedIndex = -1;
listOrgs.SelectedValue = null;
listOrgs.ClearSelection(); // Clears the selection to avoid the exception (only one of these should be enough but in my application I needed all..)
listOrgs.DataSource = new Organization().DTListAll(SiteID);
listOrgs.DataTextField = "OrganizationName";
listOrgs.DataValueField = "OrganizationID";
listOrgs.DataBind();
I kept getting this error.
Weird thing is that before I set the datasource and rebind after deleting an item the selected index = -1.
If I explicitly set the selectedIndex = -1; then it works and doesn't throw an error.
So even though it was already -1 setting it to -1 stops it from erroring.
Weird eh?
Try setting listOrgs.SelectedValue = "0" after you refresh the DataSource
At the moment you are trying to select the first item in an empty list.
Change the first two line with this :
listOrgs.SelectedItem.Selected = false;
listOrgs.Items.Clear();
In case you still have this problem this is how i resolved it:
listOrgs.SelectedIndex = -1; // Clears the SelectedIndex to avoid the exception
listOrgs.DataSource = new Organization().DTListAll(SiteID);
listOrgs.DataTextField = "OrganizationName";
listOrgs.DataValueField = "OrganizationID";
listOrgs.DataBind(); //Unless you have "listOrgs.AppendDataBoundItems = true" you don't need to clear the list
#PMarques answer helped me out and did solve my problem.
However whilst experimenting, it clicked in my head why I was gettign the error in the first place.
I was setting the "Text" attribute thinking that it might create an encompassing label or fieldset + legend, for me (which it doesn't).
The Text property for a list is infact the SelectedValue property for a ListControl.
So my mistake in misinterpreting what the text property did.
Not sure it is your case, but I had the same problem and apparently there was no explanation, then I realized doing a copy and paste on notepad of a field of database that at the beginning of the value there was a NULL.
Curious thing was that a select joining tables was working. I deleted the row and reinserted, after was working fine.
I was getting the same error repeatedly and try ending up by not setting the default selected value to Index -1.
I commented my code ddlDRIBidAmt.SelectedValue = -1
This value was set at the time where my Page Controls were reset to default values.
I know its too late to answer, but what I tried is an dirty solution but it worked.
After databinding, I am insert a item at index 0
ddl.Items.Insert(0, new ListItem("---Select---","-1"));
And on setting,
I am placing try catch, In catch i am setting Value to -1