How do I go about looping through all the controls within a container, and all the controls in the container of a containing control, and so on.
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The following only retrieves -Panel and none of the other controlsFor Each cntrl As Control In Me.Controls Next How can I retrieve them all in a For Each loop without an If/Then for every level in the stack?
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This is so far the best method I found of doing this.
I've got a panel (pnlExpenses) with several labels and textboxes on it. I want the program to go through the dollar amounts entered in the textboxes and put the subtotal in a class level variable (dcSumOfExpenses). However, when the debugger passes through this Sub, objControl always shows a value of Nothing, and the Count of pnlExpenses.Controls always shows a zero. What is my code missing? The panel was added to a tabpage at design time, and the labels and textboxes were laid on top of the panel. Do I need to do something more to establish the panel's controls as a collection?
Private Sub SumExpenses()
dcSumOfExpenses = 0
Dim objControl As Control
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I am just getting back into VB.NET, and I need to ask a question. I am doing a project for a class which requires iterating through 360 items in a scrollable control that will pause every so often. I am thinking I might use either a ListView or GridView, but I am not sure if this is the right way to go or if I need to use a different control all together.
View 3 RepliesI migrate between C++ and VB.NET in my coding ventures... which leads to the occasional confusion about when something is by value or by reference in VB.NET.Let's say for example that I have an array of MyObject which is populated with a bunch of objects.
dim MyArr(5000) of MyObject. let's say that the information from this array travels throughout various data structures:
dim MyList as new List(of MyObject)
for i as integer = 0 to 5000 step 1000
Mylist.add(MyArr(i))
next
Under the above scenario, I believe everything is by reference. If I extract an entry from "MyTable" and modify its MyObject Members, I think that the original in MyArr will be modified.However, I have run into situations where I thought something was by reference, and it was by value. Are items always added to containers by reference, or are they sometimes added by value?
I want to do a container that seems like this: Wich containers must use?
View 1 RepliesI was wondering if there is a way to group controls together without using any containers such as panel, group box, or container.
View 4 Repliesi'm working on a program and i'm working with panels, and i'm very frustrated because I want to bring a panel to the front of the form but because of its parent it is locked into another panel.... in the properties for the panels there is no Parent container option though the only way i know how to modify parents is during runtime like this Panel1.parent = Me
View 3 RepliesBeen doing web development for the past 2 years - so I'm a little rusty (and I just switched to VS 2010 from 2008 so maybe something new is available)... I have 4 toolstrips floated to the top of a form. And I have a picturebox below - filling the whole form. Unfortunately the picturebox is "behind" the toolstrips. I want to split the form so that the top of the form holds the 4 toolstrips and the picturebox appears below them.
What would be the proper container to put this mess into so that autosizing is the easiest? The toolstrips will most likely be "turned off and on" during the running of the app.
How can I place a BG image on the tabs only (title area of tab)? I am also finding it dificult to change the tab text font, since it is changing the tab body font not the tab titles........??
View 2 RepliesI'm working on a winform which contains several controls like textboxes, radio buttons, datagridviews... All of these controls have been added to a main group box called gbDataEntry. My problem is when the user is seeing the form, I set gbDataEntry.Enabled = False but I want to enable some controls like DataGridviews so the user can scroll them. After disabling gbDataGridview I set DataGridView1.Enabled = True but it seems that the datagridview does not respond to this line. Why?
View 1 RepliesI know how to do it individually but not sure if it's possible to merge into one.
I have 6 containers that contain either Checkbox or RadioButtons.
Struggling sending the type of control and also wondered do i really need to call clear 6 times? Can't VB search each container for a control that can be checked?
vb
#Region "Form Events"
Private Sub ClearPizzaCreation(Of t As Control)(ByVal root As Control)
For Each ctrl As Control In root.Controls
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I have an XML file, with a rather large structure. I'm pulling several entities out of it throughout several systems, and its dynamically updated once a day. I'm using a Linq Query that is exhibiting odd behavior, its only returning if the first entry in the site tag matches the search-pattern. If its number 2 or 3, it fails to return anything. Why would this behave that way?
The following function written in VB handles pulling the data
Public Function xmlSchoolListBySite() As IEnumerable
Dim doc As XDocument = loadXML()
Dim loadedPrograms As IEnumerable(Of XElement) = From c In doc.Descendants("Organization") _
Where c.Descendants("site").Value = MySite.Site.s_Url _ 'contains Result.RawURL.tostring() formatted
Select c.Element("Title")
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I am trying to write XML that looks like this. It works so far, but when I get to the <rooms> node I can only output one.
<house>
<id>1</id>
<rooms>Living</rooms>
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I have two arraylists that contains links in one and the root url in the other. Sometimes the lists dont equal in number and I would like to iterate through the links list and if it contains a matching root url add it to a third list but also avoid any duplicates. I tried this but am not getting consistent results.
For Each link As String In urls
For Each part As String In post
If part.Contains(link) Then
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Perhaps there is another way; basically the part in post is a link to a page and contains the root url( which is link in urls). After extracting all these I need to ensure the 2 lists match.
I am iterating through rows in a datagridview in the following manner
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Why are the column methods and properties not all available in this manner to set individual datagridview cells properties? The only options available for the variable,
In the toolbox, under Containers section, there are some "Layout" controls. What's the use of them ?
View 6 RepliesI have several label boxes on my design form that all share the naming convention lbl_#.text where # ranges from 1 to 60. I want to make a loop that iterates through each lbl_#.text adding some incremental value, let's say multiples of 2 for this question's theoretical purpose.Something such that the end result would amount to the following:
lbl_1.text = "2"
lbl_2.text = "4"
lbl_3.text = "6"
lbl_60.text = "120"
I'm not sure how to access each of these labels through the coding side, I only know how to explicitly mention each label and assign a value :/
I am writing a simple XML web service and want to return raw XML. I am doing this by creating a string literal that represents the XML. My data source is a SqlDataReader object that contains the results of a stored proc call. The way I am doing it right now is by using a while loop and reading values from the item property like so :
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I have a list like this
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How can I iterate the list with ForEach to get one string with the emails like this [URL]
If I have a complex structure which contains properties which are both simple and complex types, how can I iterate over all the properties of this structure and any child properties which are not simple types?
I have a complex type called file, which contains lots of string properties and some which are other complex types which contain similar structures, eventually the whole structure breaks down into strings.
At the moment my code looks like this:
Dim file As New File
Dim props() As PropertyInfo = file.GetType.GetProperties()
_propList = New CheckBoxList
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This works, but it is ugly and I am not at all happy with certain chunks, specifically the type comparisons to establish if this is a date, string, decimal or boolean which are the potential low level types which I want to get out.
In C# it would seem these type comparisons are easier, but i seem to have to create an instance of a given type to be able to use GetType to return its type.
Can somebody show me how to loop through days between two DateTimes in VB?
View 3 RepliesI have a structure "xyz" with 3 string objects in it. "foo" "bar" and "abc" I want to iterate through the structure and compare the names of the objects.
Structure xyz
dim foo as string
dim bar as string
dim abc as string
End Structure
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I have an asp program that needs to validate data for textboxes that are dynamically created and put into a placeholder. Each textbox has to have a value when the user hits the Save button. I have the following code:
Dim testCheck As Boolean = True
For Each txt As TextBox In pnlTests.Controls
If txt.Text = "" Then
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I have two arraylists that contains links in one and the root url in the other. Sometimes the lists dont equal in number and I would like to iterate through the links list and if it contains a matching root url add it to a third list but also avoid any duplicates. I tried this but am not getting consistent results.
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I'm new here, but I always exhaust myself in research before I go asking for help with my code. What I'm actually doing is porting a program I wrote in AutoIT proprietary code over to vb by hand. I've really come far and have figured out out how to read/write data to an XML file, which was the biggest challenge. I'm having a little bit of a rough spot with iterating nodelist data and then adding it to a listview in order.Here's what I have within a sub that begins to pull data from the file.
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This adds data a row at a time, which is what I want. But look at the data I'm feeding it, node.innertext.I have to iterate the specific nodelist before I can use node.innertext. Putting .subitems.add in the iteration just results in a huge mess. I thought about using a function to return the data and then drop the function name in there, but whenever I iterate within the function it only ever returns the first item (it iterates only once even though there are more than one interations). Hopefully someone can point me in the right direction, I don't need to be spoonfed the answer.
I want to do something different on the last KeyValuePair of the Dictionary I'm iterating on.
For Each item In collection
If ItsTheLastItem
DoX()
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I have the follow code in my program where I hit a SQLCe database to append the results into a list. That part works, but instead of exiting the function 'QueryDB' it goes to the else statement and runs the function again, which will return a null value. I designed it this way becuase I wanted to check to make sure the database is open before I try to execute the SQL statement, and if it's not open, call the method to open it and run through the function again.
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i have a problem. I have database with a tableadpater. i want to get the userid with this tableadapter.
Dim dsGN As New ForumTableAdapters.Message2TableAdapter
Dim dtBetrieb As Data.DataTable = dsGN.GetUserIdFromThisMessage(ConversationID)
For Each objRow As dsGN.Message2Row In dtBetrieb.Rows
mystring = objRow.UserId.ToString
Next
i get the error "dsGN.Message2Row is not defined" The Name ob my table in the database is "Message"
I'm working on a VB.NET program that will automatically backup my work to my FTP server. So far I am able to upload a single file, by specifying a file name using this:
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I seem to be having some trouble finding anything to help me iterate through objects in an embedded resource file.What I have got, is a bunch of resource files that each have a library of sound wav files.What I'm trying to do is cycle through them all and add their name to something like a list box.I found a couple of snippets online that do this but for external resources. Here is what they do.
' Create a ResXResourceReader for the file items.resx.
Dim rsxr As ResXResourceReader
rsxr = New ResXResourceReader("Samples\Kicks.resx")
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1. It still needs a phisical file in the debug folder (I have them in a folder called samples within the debug folder.)
2. It gives me this error.QuoteResX file Could not find a part of the path 'C:\Users\sed10711\Desktop\Sequencer Interface\Sequencer Mock Interface\bin\resources\kicks\kickdrum1.wav'. Line 123, position 5. cannot be parsed.