From a TreeView, I get this XML serialized:
<?xml version="1.0" encoding="utf-16"?>
<node text="<span id='c6f5ab9e-d08f-448a-9143-02d174317c07' oncontextmenu="
SetContextMenu(this.id, event);return false;"
>Zürich</span>" value="c6f5ab9e-d08f-448a-9143-02d174317c07" navigateurl="" populateondemand="False" showcheckbox="false" checked="False" expanded="True" selected="False">
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my class inherits from TreeView. In it's constructor, it adds nodes. In the Winforms designer, if I put an instance of the Treeview on the Form, the nodes are visible. That's ok.
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I have just learned about serialization, and looks very appealing as a way to save application data without much maintenance overhead.But I have one issue that I would like answered before I start coding.If a user saves a project via serialization, and then the program gets an update, say one that might have added or removed a property for an object.If the user then tries to load his previous project with the updated program, since the object now has a modified structure won't it fail to load from the previously serialized data?Would there be any way to recover/convert that saved data to the current object structure?
View 6 RepliesWhenever i start my form (window application) and link from one form to another, my data doesn't load but when i close the respective form and open it again , it appear. Can i know where is my problem ? Thx in advance. Here's the code snippet :
Private Sub AccessControl_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim sqlstring As String = "select * from depttable"
Dim connection As New SqlConnection(db.cs)
Dim dataadapter As New SqlDataAdapter(sqlstring, connection)
[code]....
By using Treeview control i want to show the data on the DataGridView2.This data is coming from DataGridview1 which is hide on the output.When i click on the selected node that perticular node is connect to suitable data on the datagridview1. Then that data or that Row is display on the Datagridview2.[code]...
View 1 RepliesI've been using XML serialization for a while, and today I realized something really odd. If I have a new line right after a "dot" (.), when i deserialize, I lose the dot. Has anyone ever had this happen to them? The following is my serialization code:
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How can I load treeview from Access? I want to get small example for that.
View 3 RepliesWhat is the best to load a treeview from a database where it goes 4 deep
Parent
child
child
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How would that look in a database? and then how would you load the tree. I can load everything up to the grandchild, but as soon as I load the great grandchild I start having issues. So I am thinking it is the way they are in the database.
Private Sub DisplayTreeview()
Try
tv.Nodes.Clear()
Dim i, j As Integer, ds1 As DataSet
S = "select * from Product where PdtRoot=''"
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I was making a treeview favorites for my browser and got this code, however, nothing happens on startup, like the treeview stays emty
Heres the code for the Load handler
If System.IO.File.Exists(FavFile) Then
Dim xdoc As New Xml.XmlDocument
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the exact same code works for the orginal project, and I have the same xml document in the same subfolders for my project
I start program for a library and I have to use Treeview and Access DataBase..I find methode to load database to treeview but the problem is save changes after I run program Access Database load to treeview and I edit tree but how I can save changes before I close program?
View 1 RepliesI need to create an XML doc that I can call up and populate a treeview with. Can someone show me that basics on doing this. A simple example will suffice. Note I am not using XML-speak for any of this description. Assume I have some unknown number of Types (Parent Nodes). Each Type has a possible of Three Groups (children to Type nodes). Each Group has an unknown number of randomly names Cases (children to Type nodes). I want to create this XML file, save to a directory and the open again later to load into a treeView control.
Type1
Group 1
XYZ Case
[Code].....
I want to load 2 crore records in a treeview control with parent child Hierarchy order
for example
- Groupa
- a1
- a2
[Code[....
I have a treeview control on my form, i am trying to load an xml into the treeview to show cities/states (example at the bottom of the page)The xml that treeview is loading from looks like:
vb.net
<?xml version="1.0" encoding="utf-8" ?>
<Locations>
<Group name="US States">
[code]....
This is one of those problems where there just doesn't seem to be anything of use on Google.Does anyone have any code snippets of how to achieve this? This thread: url...links to a solution but experts exchange has been a paid for service for a while now.Ideally, the solution needs to be able to handle any number of parent/child nodes.
View 3 RepliesI using an ObjectDataSource (Should receive 5 rows) and a gridview.When I open the gridview I received all rows except the first one. So I only see 4 rows.Now I sorting my gridview with a click on a column. But I also get only 4 rows. After selecting a filter I receive all 5 rows. What could be the problem?
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I've placed a treeview on my form and when debugging everything works as planned. However, when I publish the application and run it on another machine, I get a null reference exception. This form is an MDIchild and another form in the same child collection loads its TreeView data with no problem.Here's my code, MajorCategories(), MiddleCategories(), MinorCategories() are all arrays of Structures filled in an outside subroutine.
Private Sub CategoryMaintenance_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
RedrawTree()
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I have a problems with my application..
1. collapse and expand treeview when i click plus sign (+) on treeview, treeview didn't expand subfolder but when i click image, treeview expand it.
2. showing path that i check on treeview when i check the treeview then i'm click the button, then return path that i check
This is my code..
I am loading 25000 records into my gridview with 70 Columns and it is crashing.
Why is it crashing?
xxxx,2222,3333,44444,5555555ab,6666666,500000,500000,Haaaa
How to substring it step by step load to gridview?
I'm still in my novice stages of .net development, and I think I may be trying to make something too complicated.In VB.Net 2008, I'm using a SQLDataAdapter to Fill a dataset with records being returned from a Stored Procedure (SQL Server 2005).I'm using that dataset as the datasource for a gridview. Up to this point, everything is great and I understand what's happening.I'm getting ready to make my first-ever attempt at updating the data in thegridview and then pushing the updates back to the SQL dB.Here's where I'mgettingconfused...to cut to the chase, what's the simplest way to load the updates back into SQLServer?
View 2 RepliesI have two experimental web services. One is an asmx contained within a .net web application. The other is a WCF service library being invoked from the web application.The asmx basically does everything I need, but I think WCF would be better, except that it doesn't do anything as I would expect after fiddling with the asmx service.For example, the same method behaves differently in each:
' ASMX
<WebMethod(BufferResponse:=True, EnableSession:=False)>
Function Test(aObject as Object) as Object
' object will have been successfully serializaed into a dictionary
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Right now I have controls that are in my update panel and change the data in my gridview they work fine, but then i thought it would be cool to have the controls in the header of my gridview. But when i add them to my header and hit the button/run the function i get the failed to load viewstate error.[code]
View 3 RepliesMy database : table1
ID FIRSTNAME AGE
1 Sumit 22
2 Sanjeev 23
i have gridview 1 and textbox1 and button1 i want when pages load the gridview displays the all records from table1 and also ...i i wanna search record for firstname by typing sumit in textbox1 and click on button1 then in gridview the record of sumit will be shown ..by default gridview display alll records from table1 How to do this My Selct Query is below : but it doesnot display all record ...but it can display record if you search for a particular record .
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I have the following problem: I select a customer from a dropdownlist and then the gridview should load all items of all orders of that customer. I have the following query:
Dim allorders = From ord In db.Orders
Where ord.CustomerID = Convert.ToInt32(CustomerDropDownList.SelectedValue)
[CODE]..............
I also tried to modify the query as follows:
Dim orderitems = From oi In db.OrderItems
Where oi.OrderNumber = (From From ord In db.Orders
[CODE]...........
But this does not work. I just started using LINQ.
Basically I want tO retrieve a "TextBox1" which I add in to one of the new column (TemplateField) of the gridview and the rest of the column are data load from the sqldatasource control i will want to indicate the "TextBox1" basic value that i calculated...so the result is when the default.aspx is loaded (which mean page load) the "TextBox1" should have show the calculated value.
sO now is how am I going to retrieve that " TextBox1" from the gridview in order for me to indicate a value cause i dont need to use this code below as my gridview data is use the retrieve in sqldatasource in the design default.aspx
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i have a treeviev and listbox.i want to display the selected contents of treeview into the listbox.my code is working for file but not for folder. means i want, if the all contents of folder ABC(i.e all files) are selected then in listbox i want to show the only path of folder not the seperate path of each file.
View 1 RepliesI have xml like this:
<?xml version="1.0" encoding="utf-8"?>
<session xmlns="http://winscp.net/schema/session/1.0" name="blah@blah.com" start="2011-10-03T15:09:30.481Z">
<ls>
[code]....
Why is XMLSession.FileList.Count always 0. I hypothesize it has something to do with the declaration above it but I am not sure what is wrong with it. Maybe it can't accept a path, if not, how can I do it?
i have a treeview say TV1 and another Treeview Say TV2.. Now TV1 Contains all nodes for user rights. and i want to add to tv2 only selected nodes.Like TV1 is
Node 1
....Child of Node 1 (Level 2)
.........Child of Child of Node 1 (Level 3)
what i want is that when i select Level3 Node it should chek TV2 for the parent of this node. if parent exist it should add the node under the same parent. if parent does not exist it should check for Level 1 Node and if it exist it should add Level 2 Node and then Level 3 Node. Otherwise it should add Level 1 , Level 2 and then Level 3 Nodes in order.
I have a class, let's call MyClass. In this class, I have a TreeView property let's call myTreeView..In my code, I populate the Nodes of this TreeView so I can use it later on.Then, when it's time to actualy use it, I haven't been able to take all the nodes from myClass and put them in a Tree View Control on my form.[code]The weird thing is that when debugging, the TreeView in MyClass is well populated with the proper values and in the loop, newNode isn't empty, there's actually something but for some reason it's not showing anything.
View 2 Replies