VS 2008 Clearing Objects?
Apr 8, 2010When the program automatically clear object, and take them off from the memory? Is it take place when a procedure in which the object was declared ends?
Or should i do it by myself before procedure ends?
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VS 2008 Inherit ListView - Dispose Of Two Objects When The Form's Disposing Of It's Objects
Feb 7, 2010I have a user control that inherits the FW ListView and I need to dispose of two objects when the form's disposing of it's objects. Here's what I've concluded already, am I on the right track?
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[2008] Clearing A DataGridView?
Mar 9, 2009I have a DataGridView control bound to a DataSet. The DGV loads data based upon a combo box selection. If there are no records in the table that meet the combo box selection then I want the DGV to be cleared.
I've tried:
Me.gdvEXTSigns.datasource = Nothing
This does not clear the existing data (rows, if any) in the GDV.
VS 2008 MSChart Clearing At Runtime
Dec 7, 2010I am using combobox on a form to select a graph to display on MSChart. The points are then drawn on the chart which is fine for the first chart selected.If I then select a second chart to display it adds the data to the current graph.I have tried Me.Chart1.Series(0).Points.Clear()which clears the points but the axis information remains ie The first chart has 10 sets of points so the y axis goes to 10. When selecting the next chart which has 15 points the y axis goes to 25 even with the points removed.I have also tried manually setting the x and y max values after the new points are added but it doesnt alter the values.Any idea how to set the chart back to default so that I can plot the next.
View 2 Replies[2008] Clearing Cell Contents Within A DataGridView?
Feb 9, 2009clearing cell contents within a DataGridView?I have a column with a list of names and would like to be able to make the whole column blank.I can currently achieve this (not the greatest) by clicking on individual cells and doing this ..
DataGridView1.CurrentCell.Value = " "
But rather than doing this I would like to be able to do every cell in the column, all at once. I'll put the code behind a button, so it can all be achieved by a single click.
VS 2008 Ave A Listviews Items To A Database (after Clearing It) Then Load It All Back In To The Listbox?
Nov 23, 2009Im trying to effectively, Save a listviews items to A database (after clearing it) then load it all back in to the listbox, would this do it? becuase it just doubles what ever is in the listbox @ the time,
Dim ConnStr As String = "Provider = Microsoft.Jet.OLEDB.4.0; Data Source = " + System.Windows.Forms.Application.StartupPath + "data.mdb"
Dim DT As New DataTable()
Dim SQLStr As String = "DELETE * FROM [keys]"
[code]....
Make Objects From The ToolBox Using Code Instead Of Changing Existing Objects Invisible Then Visible Later?
Dec 5, 2011make objects from the ToolBox using code instead of changing existing objects invisible then visible later?
View 7 RepliesSql - Error The SqlParameterCollection Only Accepts Non-null SqlParameter Type Objects, Not Int32 Objects?
Jun 23, 2012I am getting this error, Not sure why it is happening "Error The SqlParameterCollection only accepts non-null SqlParameter type objects, not Int32 objects."I have tried with all sorts of possibilties, now try to enter default data as dummy data,
Using connection As New SqlConnection
connection.ConnectionString = ConfigurationManager.ConnectionStrings("DentalDeviceConnectionString").ConnectionString
connection.Open()[code].....
Modifying Objects Inside For Each Loop Sets Properties Of All Objects With Values Of Last One?
Jan 29, 2011I have a program like this.
Module Module1
Public Class Mstr
Public Property Prop1 As String
Public Property Prop2 As String[code]....
But it is not working as I expect it to. You can see it from.The DtlsB properties of all three DtlsA objects are having values from last iteration.
Random Objects - Let The User Input Objects To A Richtextbox 1 Object On Each Line?
Jan 6, 2011I want to let the user input objects to a richtextbox 1 object on each line, and somehow use Random.Next to select pseudorandomly a few objects, the number 'few' inputted in a textbox.
View 9 RepliesThe SqlParameterCollection Only Accepts Non-null SqlParameter Type Objects Not String Objects?
Jan 18, 2012Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Using conn As New SqlConnection("Database=Clinic_Management_System;Data Source=.SQLExpress;Integrated Security=True;AttachDBFilename=|DataDirectory|Clinic Management System.mdf")
Dim cmdRecord As SqlCommand
[code]....
Child Objects Raising Events In Parent Objects?
May 1, 2009long story short, I have created a ListView type control, using UserControls for the parent control and the ListViewItems. Most the of the control is written and works fine, right up to the point where I tried to replicate the 'Control.SelectedItems(0).Index' property and the 'SelectedIndexChanged' event.
Each child object knows its index value, and could pass this value via the SelectedIndexChanged event (assuming this is how it works in a normal ListView control -- user clicks on an item, and that item fires an event updating the selected index value in the parent object).
How does the child object raise an event in the parent object? I have a feeling this could be done with Delegates, but I'm still learning about their usage.
VS 2008 Put Objects To The Top?
Feb 15, 2010How can I "move" an object to the top and to the back?
View 2 RepliesVS 2008 Using MDB For All All Objects
Apr 19, 2009The plan is to use a database just a MDB one, which holds all text fields for all the objects in my application.For example (real dodgy example)Label1.text = "Select NewText from Table where [ID] =" & Label1.Name & " and [ENABLED]=1"..I want this to go for every single control in my application, which basically would allow any client to completely customize text fields in the app.Currently I'm using this so far to access the Data. But before I continue I want to see what you guys would do?[code]
View 3 RepliesASP.NET Cast ArrayList Of Objects To Custom Objects?
Aug 9, 2011getting the following error Unable to cast object of type 'System.Object[]' to type 'OrderService.webdirect_WebLinesRow[]'. On the line
webdirect(web_companyID, web_locationCode, web_customerNumber, web_orderNumber, web_orderReference, web_orderDate, webLinesArray.ToArray(), o_Company, o_LocationCode, o_CustomerNumber, o_OrderNumber, o_OrderStatus, o_OrdDescrip, webRespArray)
I created the webLinesArray.ToArray() array as such
Dim webLinesArray As New ArrayList()
Am I missing an additional cast or something ?
Compare Two Objects To Check If All The Properites Of Both The Objects Have Same Value Or Not?
Aug 28, 2008I want to compare two objects to check if all the properites of both the object have same value or not. for this i need to use the reflection to enumarate through all the properties of an object and check the value of the property. To try the code just i have written a Employee Class having Two Properties EmployeeNo and EmployeeName. I am creating an object of the Employee class and need to write a function that can list the values of all the properties in the class.
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VS 2008 Loading SQL Objects?
Jan 5, 2012I am creating a sports bet program and have set up a database in sql server 2008 R2 with results for games including wagers, odds etc. I now want to display this data in a range of listboxes, textboxes and labels in my VB.Net program.I am quite happy to play around and learn myself however I would love it if someone could get me started by completing one of the simpler labels. This label has to display the entry in Team One in labelTeamOne.
show me how to do this? I have already imported the dataset using the database wizard so all I need is the code.
VS 2008 String Between Two Or More Objects?
Jan 25, 2012However I do not want to make like 100 blocks of code made of If statements doany idea that this could be done. Like for example
Dim str1 as string = "X" or "O"
If btn1.text = str1 and btn2.text = str1 then
Messagebox.Show("Blah Blah")
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Dispose Managed Objects In 2008?
Jun 1, 2011In My application, I have an MDI form. From MDI form I open all forms as child forms. I have implemented IDisposable for all large objects like file stream DB connection etc. In the Form_Disposed event I dispose all unmanaged objects. After the child form is closed, all unmanaged objects are disposed but managed objects (controls and form) are not disposed and still in memory. I find it from .Net Memory Profiler ([URL]).
So I have write code to remove all event handlers of all controls and form. Now, When form closed, dispose is called and all event handlers and controls are disposed, but controls and form are still in memory.
VS 2008 - How To Refer To Objects Via String
May 9, 2011I have lots of labels that I need to refer to.
E.g. label1 = listbox1.selecteditem.tostring & "123"
label2 = listbox1.selecteditem.tostring & "123"
I have 20 labels which i need to repeat the same process for. What I found was this code which always gives me the null reference error.
CType(Me.Controls("Label" & i), Label).Text = "what i want here"
I have stated dim i as integer = 1
And later i = i + 1 until it is 20.
I've tried i.tostring and cstr(i) when referring to it but it keeps saying it doesn't exists even though i have labels 1 to 20 named label1, label2 etc. on my Form.
VS 2008 Manipulating Objects Through Code?
Mar 25, 2010How can I create and manipulate Objects on form with my vb code?By that i don't mean toggling the visibility.
View 6 RepliesVS 2008 Moving Images With Objects?
Jul 1, 2010I'm designing a new application, but have two big problems.I wanna put an image in my form, and have the possibility to drag them.For example, I put an image with 100*100 but my imageviewe ronly have 50*50 So, I wanna drag the image around the imageviewer.
How can I do this?The other problem is:In the image I wanna design some squares, with the possibility to drag them to.Drag the squares it's working fine.But, the problem is, when drag the image, I wanna the squares "follow" the imagem and keep thei position in the image.If it was confuse, I try upload an explanation image.
VS 2008 Printing A Panel With Objects?
Dec 24, 2010my panel contains datagridview and labels, i think i copied the code here. the problem is, it only prints labels, textboxes, and pictureboxes as the code states in the conditional statement. here is the code i am using:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
PrintDocument1.Print()
End Sub
Private Sub PrintDocument1_PrintPage(ByVal sender As Object, ByVal e As System.Drawing.Printing.PrintPageEventArgs) Handles PrintDocument1.PrintPage
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VS 2008 Property Objects And Images
Jul 15, 2009I need some advice: I need to create an app involving draging images to a treeview. What should happen is once the image is dragged to the node it must take an instance of a property. For example
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VS 2008 Running Same Query For Different Objects
Jun 2, 2010Currently my code looks like this:
[Code]...
Where x would be the numbers 0 to 100, or infinite I don't mind. I want it to check all the numerical values for each number. How would I go about doing this?
VS 2008 Way To Specify Bounds For Multiple Objects?
May 22, 2009In my game, which is just for practice, I have a 2 rectangles one set as the inner bounderies, one set as a sprite, but I want to create walls for my boundaries. So how could I set a string of bounds with this
Private Sub Form1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles Me.KeyPress
If Sprite.Bounds.Top <> Wall.Bounds.Top Then
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VS 2008 XML Serialization / Deserialization - Objects Into Xml
Apr 8, 2010I am using the following methods to serialize objects into xml:
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Clearing When Tab Is Used?
Jun 21, 2010When you are using the tab to enter a textbox, How do you select all the text so when you begin typing it eliminates the old text?
View 1 RepliesUnable To Move Objects In Designer - VB 2008
Dec 3, 2009I cannot move objects (such as buttons, listboxes, etc) in the Windows Forms Designer by clicking and dragging them with my mouse. This gets really annoying after a while. However, I can move them with the key pad (up down left right) and by changing the location property. Does anyone know what is going on?
Oh and I'm running vista with all the service packs and latest updates, and I don't have any viruses (scanned with MBAM, Spybot and Avast)
VS 2008 Creating Subroutines For Objects Which Are Yet To Be Created?
Mar 12, 2012I'm creating a list of labels dependent on a few variables based on search results.Say I have 10 search results, 10 labels will be created within a for each statement, however I want to create subroutines for these 10 labels with an onclick event, is this possible
View 9 Replies