Hi my required tree structure is as follows
a -- b -- d
| |
| |
| -- e
-- c
I have my string array as follows
a/b,c
b/d,e
d/
e
where the component before / represents parent and the children of the corresponding parent are separated by ,
Can anyone provide me the logic to create a array collection for this hierarchy to set as dataprovider to my tree.
Thanks and regards
Here's the general idea. (I'm not going to type all of the nodes out) Another approach is to create an object that has label and children properties rather than creating all of this dynamically with Objects. Hope that helps.
var dp:Array = new Array();
dp[0] = new Object();
dp[0].label = "a";
dp[0].children = new Array();
dp[0].children[0] = new Object();
dp[0].children[0].label = "b";
myTree.dataProvider = dp;
Related
VBscript:
arytwoDim(1,intLastBucketBlockIndex) = "08:30 AM" 'TIME
arytwoDim(2,intLastBucketBlockIndex) = 5 'Resource QTY
I would like to create a List collection equivalent to vb array, so that I can mirror the logic with hard coded row,cols.
I tried loading list like this:
List<List<String>> arytwoDim = new List<List<String>>(); //Creates new nested List
arytwoDim .Add(new List<String>()); //Adds new sub List
arytwoDim [1][intLastBucketBlockIndex] = "08:30 AM"; //TIME
arytwoDim [2][intLastBucketBlockIndex] = 5; //Resource QTY
I received this error: 'Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index'
I confirmed that value intLastBucketBlockIndex contains is 0.
Please advise, thank you in advance for your help!
Hi im relatively new to c# code and i was wondering if there is any way to get the amount of columns and rows in a grid and store that amount in a variable
Something like:
var columnamount = grid.columnamount;
But i could not find anything that works
Thanks
You can use the following code to get a count of the columns and rows directly via the ColumnDefinitions and RowDefinitions properties. No need to enumerate the children of the grid because you may not have views in every column/row.
var columnCount = grid.ColumnDefintions.Count;
var rowCount = grid.RowDefinitions.Count;
For reference the documentation.
You might be able to do it this way, purely based on what I see in the docs:
var countColumns = grid.Children.Where( c => c.Column).Max();
var countRows = grid.Children.Where( c => c.Row).Max();
But I'm not sure if you can access Row anf Column properties on the child element.
This is not the best way to check, I guess, but it's working (same thing for columns):
EDIT: nope, for columns it doesn't work
int GetRowsCount(Grid grid)
{
var item = grid.Children.FirstOrDefault();
return item != null ? Grid.GetRow(item) + 1 : 0;
}
I have been given a dataset to work with that is layed out in the format of
Object | Type | Level | Comments | Parent | Child
So far I have been able to get the Object as the Parent Node and the Comments as a child node, however I need to get multiple children for this parent, and then children on them
An example of what I mean is like so
Object | Type | Level | Comments | Parent | Child
Dave | WH | 1 | comment | root | null
Simon | WH | 1 | comment | root | Fortnum
Simon | WH | 1 | comment | root | Mason
Tim | WH | 1 | comment | root | null
wallace| WH | 2 | comment | Simon | null
Mason | WH | 2 | comment | Simon | Mouse
Mouse | WH | 3 | comment | Mason | null
I need it to look like this
I have looked at the code from here Similar Stack Answer but its not working for me
I am pulling the sql data into a datatable and then looping through it to try and build the tree view.
This is the code that I am using that is only giving me the object as a parent node, and then the comment as a child node, but I need to be able to locate the actual children of the and then add them to the treeview.
For Each row As DataRow In dt.Rows
node = Searchnode(row.Item(4).ToString(), TreeView1)
If node IsNot Nothing Then
subNode = New TreeNode(row.Item(3).ToString())
node.ChildNodes.Add(subNode)
Else
node = New TreeNode(row.Item(0).ToString())
subNode = New TreeNode(row.Item(3).ToString())
node.ChildNodes.Add(subNode)
TreeView1.Nodes.Add(node)
End If
Next
then the function
Private Function Searchnode(ByVal nodetext As String, ByVal trv As TreeView) As TreeNode
For Each node As TreeNode In trv.Nodes
If node.Text = nodetext Then
Return node
End If
Next
End Function
Ive never really worked with treeviews before in ASP.Net but would be very grateful if anyone can help me.
Its not necessary to add child nodes when you add a new node. If the datatable is sorted the way your example shows the childnode will come up with a reference to its parent after the parent has already been added to the treeview.
so prior to this example edit the datatable and remove the duplicate objects
like remove one of the simons. the(child) column is not needed. also (optionally) going to add a reference to the parent when adding the child.
For Each row As DataRow In dt.Rows
node = Searchnode(row.Item(4).ToString(), TreeView1.Nodes)
If node IsNot Nothing Then
subNode = New TreeNode(row.Item(0).ToString()){ parent= node }
node.Nodes.Add(subNode)
Else 'root node
node = New TreeNode(row.Item(0).ToString())
TreeView1.Nodes.Add(node)
End If
Next
also searchnode needs to be recursive to check child nodes.
Private Function Searchnode(ByVal nodetext As String, ByVal tn As TreeNodeCollection) As TreeNode
TreeNode ret = nothing
For Each node As TreeNode In tn.Nodes
If node.Text = nodetext Then
ret = node
exit for
Else
ret = Searchnode(nodetext, node.Nodes)
End If
Next
Return ret
End Function
Hi
I am creating online quiz in asp.net c#. For that i have one form that displays testlist in dropdownlist & start button. After clicking 2nd form appears, 2nd form shows one label for question, radiobuttonlist for answers ,next & checkbox for review. I am creating array of random question ids in start button click event of the 1stform. when i click next button in 2nd form then next random question appears, i want array of questions those are checked for review. I used code for arrays of values ( eg.10101) 1 for true & 0 for false as follows but i want array of that question ids those are checked:
int[] a = (int[])Session["values"];//this is array of random question ids created in 1st form
int g;
if (chkmark.Checked == true)
{
g = 1;
}
else
{
g = 0;
}
int[] chkarray = new int[Convert.ToInt32(Session["Counter"]) - 1];
int[] temp1 = (int[])Session["arrofchk"];
int k, no;
if (temp1 == null)
no = 0;
else
no = temp.Length;
for (k = 0; k < no; k++)
{
chkarray[k] = temp1[k];
}
chkarray[j] = g;
Personally, i would use a Dictionary<int, bool> for this.
In the key of the dictionary, you can store the random Question ID, in the value of the pair, you can store the checked item state. It might take you more work now to refactor it, but I believe it will save you a lot of time in the end when you want to do more actions on your quiz items.
Using a dictionary - or at least a well chosen collection, I think it will be easier to get the right data back.
For your example, it can work only if the positions of both arrays are the same.
Dictionary<int, bool> quizAnswers = new Dictionary<int, bool>(); // <questionID, checked>
// Fill dictionary with questions and answers
for(int i=0;i<a.length;i++)
{
if(temp1.length > i) // Make sure we don't get an IndexOutOfBoundsException
{
quizAnswers.Add(a[i], temp1[i] == 1);
}
}
// Get Answered question in array ( LINQ )
int[] checkedAnswers = (from KeyValuePair<int, bool> pair in quizAnswers
where pair.Value == true
select pair.Key).ToArray<int>();
The reason I am using a Dictionary here, is because I personally think it's neater than having two separate arrays.
I believe you should implement a Dictionary in your quiz, in stead of those arrays. What if the array indexes don't match, or you want to dynamically add a question to a fixed size array, etc..
It's something to take into consideration. Hope I could help you out.
I have a 1 row, many column flex datagrid. I would like to turn the dataGrid on its side, so that the column headers become a single column running down and v.v.
Is there a way to do that in the DataGrid?
Or am I stuck manipulating the data presented to the grid? If so whats your recommendation?
The main idea here is I have an object like:
x=y
b=u
o=p
u=e
w=p
And I'd like a control that is visually similar to that. Currently the datagrid displays the object as:
x b o u w
y u p e p
Which is too horizontal for my case. Thx
I presume that you want to convert your columns in to a single column
this can be done by getting all the columns and put the in array as provide it as a dataprovider.
DataGrid.columns
will return the columns.
and you can do some think like this to create columns.
public function createColumns():Array{
var advancedDataGridColumn:AdvancedDataGridColumn;
var i:int;
var columnsArray:Array = new Array();
for(i=0;i<columns.length;i++){
advancedDataGridColumn=new AdvancedDataGridColumn();
advancedDataGridColumn.headerText=columns[i].dispheader.toString();
advancedDataGridColumn.dataField="#"+columns[i].name.toString();
advancedDataGridColumn.itemRenderer=new ClassFactory(Styler);
if(columns[i].descending!=undefined ){
if(columns[i].descending.toString()=="true")
sortField = new SortField("#"+columns[i].name.toString(),false,true,null);
else
sortField = new SortField("#"+columns[i].name.toString(),false,false,null);
}
if(advancedDataGridColumn.headerText == Constants.price||
advancedDataGridColumn.headerText == Constants.quantity||
advancedDataGridColumn.headerText == Constants.askPrice||
advancedDataGridColumn.headerText == Constants.bidPrice||
advancedDataGridColumn.headerText == Constants.netAmount||
advancedDataGridColumn.headerText == Constants.interestAmount||
advancedDataGridColumn.headerText == Constants.principalAmount||
advancedDataGridColumn.headerText == Constants.accruedInterestAmount){
var currencyFormattor:CurrencyFormatter = new CurrencyFormatter();
currencyFormattor.useThousandsSeparator=true;
currencyFormattor.currencySymbol="";
currencyFormattor.thousandsSeparatorFrom=",";
currencyFormattor.thousandsSeparatorTo=",";
advancedDataGridColumn.formatter=currencyFormattor;
}
columnsArray.push(advancedDataGridColumn);
}
return columnsArray;
}
sorry i just copied the code but i think it will help you.
Set the DataGrid to have only 2 columns and transform the original dataset to an array collection of {propName, propValue}.
Say you have:
var originalDataSet : ArrayCollection;
var dataSet : ArrayCollection;
var columnSet : ArrayCollection;
Once you have the original values, you'll do something like:
dataSet = new ArrayCollection();
for (var i : int; i < originalDataSet.length; i++)
{
dataSet.addItem({name : columnSet.getItemAt(i), value : originalDataSet.getItemAt(i)});
}
myDataGrid.dataProvider = dataSet;//set the data provider of the grid to the transformed data set.
To clarify:
{name : columnSet.getItemAt(i), value : originalDataSet.getItemAt(i)}
This creates a new instance of type Object and assigns the name and value dynamic properties to their respective values. Instead of this you might want to define your own class with bindable properties. Note that the property names are just for this example because I don't know what you're working with actually.
The data grid at that point should have two columns defined by you, with their dataField properties set accordingly. Also, this example assumes columnSet collection contains the "horizontal columns" that you want displayed vertically. If you can obtain these based on the values in the originalDataset, you might not even need columnSet.