I have a list viewer set up in one of my forms which contains data inside it which is filled in from a database. When I want to clear the list viewer, it clears all values in the list viewer except for the first row. Now, if I close out the form and re-open it, the list viewer is officially cleared.
The code I am using is: lsvDocuments.Items.Clear
Is there another way I can clear the list viewer completely without having to close the form and re-open it?
how to get the selected items from a check list box...i have 7 items in it, need to see which ones are selected...and how to clear the checks from the list box?
I'm trying to make a game logger for MW2 so you can enter different stats and it will display those stats along with like your overall KDR for those matches and what not.Right now I'm just trying to do one match at a time meaning you enter your kills, assists, and deaths you hit the enter stats button then you hit the display stats button and a bunch of info shows up in the list box. Then you re enter different stats and it gives you the same stats but updates them for that match only. However, for some reason the list box isn't updating. It just keeps adding the kills, assists, and deaths together however the KDR does update.
vb Public Class Form1 Dim stats As Integer() = New Integer(2) {0, 0, 0} Dim kills As Integer Dim assists As Integer Dim deaths As Integer Dim KillDeath As Double Private Sub btnEnterStats_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnEnterStats.Click kills = txtKills.Text '0 assists = txtAssists.Text '1 deaths =
Im 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]"
I'm storing images in a List Of Image. When I want to clear/remove all the images it contains should I dispose & set each item to nothing before using .Clear? Or can you just call .Clear? I'm doing it like this for now...
' remove all images in list of image named "images". For i As Integer = 0 to images.Count - 1 images(i).Dispose() images(i) = Nothing Next images.Clear()
When an item is selected from the list it displays in the text field of the combo box and I want to clear it without clearing the items in the list. I've tried [dropdown list_name].text = ""[Eg:- CBSelect.Text = ""] but it doesn't work since the text entering field in a drop down list box is read only.How should I do that. By the way, I'm coding in VB.NET 2005 so please give answers in VB.NET 2005.And my selection is from combobox its clear. same combobox property ( DropDown style = DropDown List ) text is not clear.
I have created some local reports in visual studio 2005, they have an extension of rdl. now I would like a method to show all the reports (in a selected folder) in some sort of list, and then be able to click on one of these, and show the report in the Microsoft report viewer controlI have found a good article on the code project I have added a listview and reportviewer control to the form.but I get an error with this line:
Dim sRptConnectionString As String = rptXML.GetElementsByTagName("ConnectString")(0).InnerText
object no set to instance of an object I think that the ConnectString does nto exist in the 'Inner text'?
I'm trying to create an application that is able to find products from a XML file, which will contain the following data:EAN (Barcode as a string, not an image) Description Price Stock
So basically, I enter the EAN and my program will lookup the XML file for this EAN and will return the description of this product, the price and the stock in a new messagebox. However, I don't understand how to create a XML file, add items, remove items, edit items, and most of all: read items from a XML file.
I'm looping all the properties in an object via reflection:
For Each p As PropertyInfo In values.[GetType]().GetProperties() If p.CanRead Then 'Do stuff End If Next
how to determine whether the property in question is a generic List(Of T)? If it is I need to loop the list itself.
I've experimented with GetType and TypeOf but have not managed to get anything working.
To clarify, I want to keep this generic. I do not want to specify the type of T, I need to loop the list items and call the ToString method on each item. T could be one of a number of different types (application specific reference types). Is it possible to do this without specifying types?
This program is supposed to allow the user to check items in a checked list box. If the item is checked, it goes into the Completed List Box on the right. The program then adds the unchecked items to the Pending list box on the left. I keep getting placement values (e.g. O,1,2) instead of the strings (e.g. "Key Returned") in the list box results (see photo attached)
Public Class frmCheckOut Dim i As Integer Dim cleaning As String = "Cleaning Inspection" Dim damage As String = "Damage Repaired"
Another program I am working on for fun, I am basically shuffling a list inside a listbox, what I want to do is delete the rest but not sure how to go through with that. At the moment I have this: [code] Just contains the code, declarations outside weren't included.So anyway, once clicked, it will call on the function to basically shuffle in a for loop, I was wondering if I should (or how should) create another function and call it in the click button or have just a loop in the click button so it deletes half the list. What I am doing is I have 20 list of items, I want the program to shuffle the items and then deleting the lower 10, meaning, if I had 10 items and wanted 5 top, I'd want: 0, 1, 2, 3, 4 and deleting 5, 6, 7, 8, 9.
I am attempting to read the results from a SQL query into a List(Of) and I can see the List.count while adding items to the List increments, however in another part of my code when I am attempting to read the List the List.Count returns 0. My List is as follows:
I have an error panel that is subbed in to a page if an error goes wrong to gracefully handle and display errors.Currently, I am just appending the error messages to a string and pushing that to a label. If you have multiple errors, this gets messy.I'd like to push each error to a list item in a bulleted, unordered list.How can I dynamically generate, from a vb codebehind file, new list items inside of an undordered list element?
I have two generic lists, named ListA and ListB. Both ListA and ListB could potentially have duplicate items. What I would like to do is use LINQ to grab the items in ListB that are not in ListA, but I'm unsure how to do so.
i want to search item A (from a list of X items) in list B but i want to get the item not found example Search ITEM A in LIST B if not found then return a print....if found continue with ITEM B..and so on.
That was probably bad title, but I'll illustrate what I'm trying to do. I have a method in a class that I need to call several times. The method returns a List(Of String). I'm just grabbing some information from a database.
VB.NET Public Function GetTestList() As List(Of String) Dim int As Integer = 0
I have a List(Of MyObj), and I want to iterate through that list and compare each element to all other elements in the same list, excluding (if possible) the same element. I have a solution that works, but it's slow and uses double For loops. It may possibly have also summoned Cthulhu from his sleep. This below is a sanitized version of what I have:
Dim MyList As New List(Of MyObj)({Obj1, Obj2, Obj3, Obj4, Obj5, Obj6}) If MyList.Count > 0 Then For i = 0 To (MyList.Count - 1) Step 1
I want to know how to test the 1st list box if it has items more than the other list box but by one item, here is what i have: If lstInvisibleTv. Items.Count > lstInvisiblePc.Items.Count Then it works good if the lstInvisibleTv list box is greater than the other list box by one but it also works if it is greater the other one by one or more which I do not want. I want it to work just by one.
I have a program that will compare an array of grocery list items glist and an array of coupon item clist.When I compare the two and if there is a match somewhere in the array I want to have a picturebox visible.When there is no match, I want the picture box not to be visible. [code] The code seems to work great until I come to the else statement.When the code finds a match it displays the picture box and the msgbox without error, but as soon as the message box is cleared, even though i've input it as an ELSE statement, the picturebox goes false again.Does anyone have any idea of how I can "hold" the picturebox to stay visible while the match between the arrays exists?
i am writing a program that reads a excel report from accounting software with our weeks orders on... so basically the program reads a list of around 100 items which all works fine.I also have a database that holds info on each item, when the excel sheet is parsed the software checks to see if any new items have been added to the list that are not on the softwares database. this is where i am having the issue.I have two lists: ItemsOrdered & ExistsingItems.
All the items ordered this week are in ItemsOrdered and all the items not in the items in the database are in the ExistsingItems list. using these two lists how can i find items that are in ItemsOrdered but not in ExistsingItems.
I have a List object and I want to remove the duplicated items but leaving at least one of the duplicated items in the list;I wrote something like this however I would optimize this code for better performance, is there something faster?
Const chars As String = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz" Dim rnd As New Random() Dim mylist As List(Of String) = Enumerable.Range(1, 100).Select(Function(i)
I try to add a "Microsoft Office Document Imaging Viewer Control 12.0" control to a form and i'm getting the next exeption: An error occurred creating the form. See Exception.InnerException for details. The error is: Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)) I have try to register the next files which throws an exeption when I try to do it:
I have a list (of lines) and i'm looping through them and identifying certain ones as edges; I would somehow like to tag these lines so that when i loop through the list again later, I know which ones i tagged. I hope i'm explaining this ok. if not, let me know. What's the best way to deal w/ this type situation?
I have a List(of String). For example: {"C1", "C12", "C10", "C1", "C6", "C22", "C1", "C6"}. I am trying to write a function to give me a list of duplicates: {"C1", "C6"} in the list. Each duplicate will be listed only once. The function I wrote does give me anything back at all. I can't figure out why. how to translate that syntax into VB.net since I am not up to speed on LINQ yet. It is here: How to get duplicate items from a list using LINQ?
''' <summary> ''' Given a List(Of String), returns a list of items that are duplicated in the list. ''' Each duplicate returned is unique.
