VS 2008 - Loop Through All CheckBoxes In Frame
Jan 27, 2010
I thought I could use this, to loop through all checkboxes in a frame:
For Each cb As CheckBox In Me.frameSearch.Controls
cb.enabled = False
Next
But it walks through once, then it comes with error:
Unable to cast object of type 'System.Windows.Forms.Label' to type 'System.Windows.Forms.CheckBox'.
There are indeed labels within 'frameSearch', but I thought that the "For Each cb as Checkbox" would loop only through all checkboxes..? Following does work, but it seems a bit of waste of CPU time, since it will loop through all controls!
For Each cb As Control In Me.frameSearch.Controls
If TypeOf (cb) Is CheckBox Then
cb.Enabled = False
End If
Next
How to do this more effectively?
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Sep 1, 2011
I'm trying to loop through a column of checkboxes to see how many checked values there are in that column. The user has to have 2; no more, no less than 2, otherwise an error should show up.
Private Sub Form1_FormClosing(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
Dim count As Integer = 0
Dim x As Integer = 0
For x = 1 To DataGridView1.RowCount - 1
[Code] ....
The error message still occurs when I have only 2 chosen in that column. I even tried this
If CBool(DataGridView1.Rows(x).Cells(7).Value = Checkstate.checked) Then
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May 27, 2010
how to loop an SWF file using specific frame numbers. I don't want the SWF file to play thoroughly. I know that frame 1 in Flash is 0 in VB, frame 2 in Flash is 1 in VB, etc.
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Jan 20, 2011
On a form I have 28 check boxes, each one represents a day out of a 28 days. I would like to be able to loop through the check boxes and assign a value to each day instead of checking the value 28 times.[code]...
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May 17, 2011
For Accounts As Integer = 1 To 10
If Cbx1.Checked = True Then Call Login1()
Next
What I want to do with this is run the loop through all 10 Checkboxes Cbx1>Cbx10. How do I use the & to do this so where the number 1 is I can replace with Accounts variable?
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Jan 3, 2012
Question 1: This loop works when the Panel only consists of CheckBoxes. But I would also like to have som TextBoxes in the Panel. When i add a TextBox to the Panel I get the error message:
For Each c In Panel0.Controls(): Unable to cast object of type 'System.Windows.Forms.TextBox' to type 'System.Windows.Forms.CheckBox'.
[Code]...
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Jun 9, 2011
I have a form that uses 28 checkboxes (checkBox1 ~ checkBox28), 28 labels (label1 ~ label28), and 28 textboxes (textBox1 ~ textBox28). These items need to be visible/invisible depending on the mode of the program (there are 5 modes). I could specify each item individually with visibility, but that requires a whole lotta code! Is there a way I can loop through 28 labels?
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May 10, 2011
I have seven checkboxes namedchkDOW1......chkDOW7I want to use a loop to uncheck all checkboxes, i was thinking about this, but it does not work
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Dec 9, 2010
How to count the total no. of asp.net checkboxes, checkboxes checked, no. of checkboxes remain unchecked in webform using vb.net ?I m using Visual studio 2008 with vb as a language ..I my webform i have 10 checkboxes...i wanna count total no. of checkboxes in webform in textboxes1 total no. of checkboxes checked in webform in textbox2 total no. of checkboxes remain unchecked in webform in textbox3?
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May 8, 2009
I have the following for each loop which loops through a registry key and reads all the values:
Dim returnValue As RegistryKey = Registry.LocalMachine.OpenSubKey("SOFTWAREMicrosoftWindowsCurrentVersionRun")
Dim keyname As String = "HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionRun"
Dim values() As String = returnValue.GetValueNames
[code].....
What I am trying to have been highlighted in bold.. Each time the loop executes and reads a value from the registry, I want the code to create a checkbox which has a unique name and text according to the value that was read... So the number of checkboxes will depend on number of values that is got from the registry...But this doesn't work. It only creates one text box and the text of the textbox is also incomplete...
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Jul 28, 2011
I have a input form that has a number of check boxes on which relate the users enquiring courses. I need to create a loop of some sort that allows each checkbox to be checked it is selected. If so, output that within a message box. Thats it put simply anyway.
I have removed a lot of the code that is not related to this query but my code at the bottom is the message box that i wish to output all details in.[ocde]...
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Mar 18, 2011
I'm doing an assignment for Uni and in my VB.NET form I have some checkboxes, I'm trying to loop through and clear them (I have a button which will clear the form). My problem is that there seems to be no property I can use to set the state of a checkbox when not explicitly telling VB which checkbox I want to use. for example, I can go
WineCheckBox.Checked = False
That will check the box, but I wand to DRY the code up a bit and not have to repeat this for each check box I have, this is what I was trying to do:
If TypeOf element Is CheckBox Then
element.Checked = False
End If
I've tried using element.CheckState and element.Checked and both times I get "Checked (or CheckState) is not a member of System.Windows.Forms.Control".
This is the whole block of code:
'clear the controls
For Each element As Control In Me.Controls
If TypeOf element Is TextBox Then
[Code] .....
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Feb 10, 2012
Suppose we got a form with some checkboxes. Each ckeckbox represents a method of the same class. Each method takes no arguments, returns no values. Is it possible using a delegate to loop through the checkboxes and run only the methods being checked?
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Mar 25, 2009
My application uses 12 checkboxes. Dependant on the status (checked or unchecked) different action are required. I can't seem to be able to structure a for next loop to do this.
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Mar 7, 2012
I have several checkboxes in a groupbox on a vb 2008 express userform. I would like to check the checked status of each when clicking a command button and then write the checkboxes caption to be used in an email or print out. I've tried several methods and always end up with the same error "Invalid Cast Exception". I have read the help on msdn and still do not understand how to make it work. Here is the code I've been trying
Dim chk As CheckBox
Dim sb As New System.Text.StringBuilder
Dim names As String
For Each chk In gbInterior.Controls
[code]....
I have also tried the code below but cannot figure out how to check the status and print the checkbox caption.
Dim ctl As Control
For Each ctl In gbInterior.Controls
If TypeOf ctl Is CheckBox Then
[code]....
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May 20, 2012
[Code]...
I can access a specific frame and put the frame into a bitmap so that I can process the bitmap.
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Oct 11, 2011
I have a datagridview with checkboxes in the first column and I want to do a loop on saving the serialnumber(s) when the users decides to check a number of checkboxes Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code]...
the problem with this code is that it only inserts the serial number of the LAST checked checkbox and the number of entries of it depends on the number of checked checkbox for example ... if I checked the rows with the serialnumber 123 and 55652341, first the row with the serial number 123 then second 55652341, only 55652341 appears in the database and it is entered twice(twice because two checkboxes are checked)
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Feb 26, 2010
How to change the frame rate in Visual Basic 2008 Media Player? I have error: System.NullReferenceException was unhandled Message: Object reference not set to an instance of an object. IS there any way to fix this? Here's My Code
[Code]...
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Apr 17, 2012
(1) how to know which version of .net framework i am using for my application
(2) is it possible to force my application to use .net frame work of any specific version only
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Feb 3, 2009
I want to read the HTML from a frame in a web page. I have started with a WebBrowser, which I browse through manually, attempting to scrape the details as I go. The reasn for using Web Browser is that it involves a complex form, which I can't really replicate in code.If I directly query the WebBrowser info I get very little, and the frame data id represented simply by a FRAME TAG, and a simple URI with no form data (it needs the data to return the content)I tried the Web Browser documentStream, and again I get very little.The closest I got to the full HTML is the following code. However it is missing the OBJECT tag and it's contents, which is what I absolutely need:
htmlwin = wb.Document.Window
For Each frame As HtmlWindow In htmlwin.Frames
For Each el In frame.Document.All
[code]......
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Apr 17, 2012
on installing a application which was packaged through inno setup on a windows xp machine X84
i am getting error as .net intialization error
what i made was while on try i had uninstalled the .net framework 2.0,3.0 and 3.5 and 4.0 and reinstalled frame work 3.5 and 4.0 + restarted the system and also i have tried to repair the frame work installation
but no good results
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Apr 2, 2010
I want to make a frame transparent, but not my forms only but of the whole system, for eg when I click on enable all frame and caption area must change to transparent?
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Mar 29, 2010
Is there a way to see if a particular frame within the webbrowser control is finished loading? I know the functions webbrowser1.isbusyandebbrowser1.readystate=readystate_complete work for the main window, but it does not work when a frame is loading. It simply keeps saying the page is done loading. The event webbrowser1_documentcompleted sort of works, it registers when my frame has loaded, but it also registers when all the other frames are loaded. Is there a way to just check on the status of one particular frame.
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Aug 8, 2009
I have been making an online role playing-game in VB2008 and inside the gameloop for the client there is some code that "smoothes" out the movement (instead of it being choppy from tile to tile.) It works pretty well but I'm having problems figuring out a math formula to get a good frame timer interval to set how fast the frames change based on how many pixels they can move per loop.Testing stuff out I found that 250ms is an ideal frame timer interval for 1.0 pixel movement per loop. If I were to double the movement step of pixels by 2 lets say (2.0 pixel step per loop) I found that the frame timer interval should be around 125ms. How can I get the frame timer interval by the movement step of pixels? In cases where the movement step can anything between 0.1 to 4.0 pixels.
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Aug 11, 2009
I assigned an integer as 1, and looped my program using:[code]I can recieve the packets without looping, but once i loop, i receive nothing.
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Apr 20, 2009
looping through check boxes.. checkbox1, checkbox2, checkbox3...... Error in the code ocheck = "CheckBox" & Str(t) as "Run time errors may occur when converting 'string' to 'Microsoft.office.interop.word.checkbox'." Dim No_Checkboxes As Integer, ocheck As CheckBox
[Code]...
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Feb 23, 2012
Here's the scenario.I have 7 checkboxes.Checkbox1 is equal to "All" where it checks all remaining checkboxes when it is checked.And the remaining 6 Checkbox2 to Checkbox7 has certain conditions if they are checked.Is there a easiest way to do this? Like using a If Elseif Statement?
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Dec 24, 2009
I have three Check Boxes If No check boxes are checked how do i make a msgbox pop up saying " Please Choose One Of the Options To Begin"?
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Feb 5, 2010
I have an access table with 2 checkboxes. I want to use them something like;[code]If nDate = today -5 then set Checkbox1 = True and finally allow the user to set the state with a yes/no MessageBox.
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Mar 24, 2010
In my program, I can place an order for glasses.To do this, I have 4 text boxes:
StockNumber: [12345]
GlassOrPlastic: [Glass/Plastic]
ScratchCoating: [Yes/No]
UVFilter: [Yes/No]
Currently, it works fine... BUT I need to type in Glass or Plastic, I need to type Yes/No and same for each thing, wondering would checkboxes be more effecient or how would I do it?How do I even use checkboxes to get the same values...(If I type in Glass it adds �30 to the price, if I type in Plastic only �15 is added...)So if a Yes answer = �20 and a No = �10 How can I do that with checkboxes or whatever...My code for when I click the order button, myAddNew just adds my information in..
Private Sub OrderButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OrderButton.Click
Dim myValue As Integer ' Base value of frames
Dim myValue1 As Integer ' Glass or plastic value
[code]....
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