C# - Empty ListViewGroup Is Not Shown In ListView?
Mar 5, 2012
I could not find any remarks on MSDN ListView.Groups Property that empty ListViewGroup will be hidden. Is it by design, or I am missing something? My sample code below will show only "group 2" with item "item1".
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) _
Handles MyBase.Load
'
Dim gr = New ListViewGroup("group 1")
[Code]....
Is there are any way to show ListViewGroup without adding dummy item
For now the only workaround idea I have is to use collapsible listview (Vista and up)
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May 18, 2011
I want to show the group name font in listview as bold, can i do that?
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Dec 23, 2010
I have a listview control setup with full row select. When I select a row and then tab to the next control, the selected row is no longer selected visually. Is there any way to keep it marked so the use knows which row they selected even when the focus is on another control?
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Dec 17, 2010
I have a list view populated by a database. The columns for each record are First, Last and EMPID. When I look at the list view on the form at runtime, I can see some/all of the First name and then below that may be part of the Last and some ... periods and no EMPID. When I hover over the record, I can see the EMPID. Is there a way to have all of the information in the record visible in the list view?
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Jan 9, 2012
Check this:Can I add ListViewGroup in WPF? Or a equivalent to that?
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Aug 17, 2010
I'm trying to chnage listview group backcolor and font.
I can't find any way to do that... There has to be a way to control these settings. I'm able to change headers properties but not group.
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Aug 26, 2010
I want an if statement to detect if a listview is empty and then show a message;
If lvwoutstandingproj.
MsgBox("No outstanding practices present", MsgBoxStyle.Information, "VeriSIS")
End if
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Oct 19, 2010
Is there a way to catch the vent when a user clicks on an empty listview/details control please? I want to enable the listview when a user clicks on it and disable another control. Or should I be using another control?
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Nov 8, 2010
How would I go about disabling a button while the ListView is empty?
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Jan 20, 2010
So I've created a custom ListView by inheriting it and overriding the OnDrawSubItem(). I can now draw icons in several of the columns. It's pretty nice! My question is, is there anyway to do this for the ListViewGroup? I'd like to place an icon just before the group text.
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May 14, 2009
I have a DataGridView that has some columns with dates. It binds to an in-memory Datatable which gets loaded from an string array of data passed back from the backend Some of the rows returned have nulls for the date columns. Solution 1: If I define the Date column in the DataTable as "string" I can easily convert those nulls to empty strings and display it in the grid as empty strings (desired results). However, if the user clicks on the date column header to sort by date, it doesn't order the rows as you want. You get a purely string sort order. Not acceptable
[Code]...
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Jun 28, 2010
This must've have been asked before but I couldn't locate it. In a mixed code project (VB and C#) we were debugging some old Visual Basic code where a statement as follows could be found:
If Request.Params("xxx") <> "" Then
'do something
I considered this a bug as Request.Params could be null, in which case the statement would've become false which wasn't the idea. So I thought. I just found out, -- probably for the tenth time and I will keep forgetting -- that the following two statements are not equal, while Nothing in VB should be equal to null in C# (thought I):
if(String.Empty == null) // always false
If String.Empty = Nothing Then ' always true
Should I dismiss this as a typical Microsoft backward compatibility effort, or should I consider this a huge error in the VB.NET compiler? Does anybody know the Microsoftean opinion on this oddity?
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Aug 11, 2010
I have a array of strings and I am looping through them, but the string might be empty so I am trying this:
[Code]...
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Apr 24, 2012
Why this is not working any solution?
Private Sub DataGridView1_Selectionchanged(ByVal sender As Object, ByVal e As System.EventArgs)
con.Open()
[code].....
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Oct 18, 2011
I have a Datagridview collections embedded in several Tabpages of a TabControl. I want to use to control Button to import data to the datagridview. Data is different for different datagridview. I want to know which DataGridView is currently shown (on the top) when I click the control button so that I can send corresponding data to it. What shall I do?
[Code]...
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Feb 1, 2011
i can't get the data to be shown in the datagridview
what am i doing wrong here? i think the problem starts in the ---- if then statement
Private stylist As String
Private treatments As String
Private klantnaam As String
Private Collindex As Integer
[Code]...
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Oct 7, 2011
I have a form consisting of datagridview and two buttons of update and load all.. I have used fillby method to obtain data from database. The query seems to be working fine, except that the data is not shown in the gridview. As in, for the qeury, if the returned rows are 2, it will show 3 rows in the gridview, but all empty.
Imports System.Data
Imports System.Data.OleDb
Imports System.EventArgs
Imports System.Data.OleDb.OleDbConnection
Imports System.Data.OleDb.OleDbCommand
[Code] .....
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Dec 22, 2010
i am using this to send an email but i want a notification to be shown when the message was sent.
Dim message As New MailMessage
Dim smtp As New SmtpClient
message.To.Add(TextBox2.Text)[code]....
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Aug 18, 2010
"For tax purposes an item may be depreciated over a period of several years. Write a program that request a description of an item, year purchased, cost of the item, the number of years to be depreciated (estimated life) and the method of depreciation (combo box), compute and display a depreciation schedule for the item similar to the schedule below. NOTE: FOR NEXT for Straight line method, DO WHILE LOOP for sum of years, DO LOOP UNTIL display table of depreciation."i don't know it this is correct 'cos when i run it, it doesn't show anything. when i clicked compute
Public Class prjactivity6
Dim intyearp%, intlife%, intmethod%, intstraightyear%
Dim dblcost#, dblstraight#
[code].....
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Dec 7, 2010
I'm using Windows 7 Aero DesktopI've seen in many applications like Google Chrome, Microsoft IE that when a download is in progress, the windows taskbar shows the progress of it's download something like in green color.
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Jan 5, 2009
I need a Timer, named tmrTimer to become disabled when a Message Box is shown, but I'm not sure how to write the If statement for it..
I know that it has something to do with If MessageBox.Show = True Then' This is where not the timer disabling..
tmrTimer.Enabled = False
End If
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May 26, 2010
I am trying to create a new customised textbox using vb.net 2005 usercontrol. And also am new to .NETWhen i add the property Text() it does not shown in design modeThe user control code is like :
Property Text() As String
Get
Return MyText.Text
[code]....
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Jan 20, 2011
Some one suggest use WPF for better look and feel when i open the VS2008 and go new project there is no WPF application ICon image attached;Is there some extra installation required
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Aug 4, 2011
I am trying to to loop through a dataset's value through the rows in a gridview and color in the text if that row matches.The code below works however whenever I change the page through the PageIndexChanging and this function is ran again, the coloring doesn't work anymore. It still loops through the gridview if there is a match but the effects are not shown.
--variable initialization class instantiation--
--code to connect to db here--
mySQLCommand.CommandText = "SELECT ..."[code]....
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Mar 27, 2012
I have a ContextMenu in my form which I want to be shown all the time. But when I click one of its items or anywhere in the form it hides itself. Is there a way to prevent it from hiding?
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Feb 10, 2012
I have a weird problem (probably only to understand) why in a test app the focus rect is not shown until I press the tab key. I want to show a dialog with two radioboxes and two buttons. When I display the dialog, I'd like to see a focus rect around my first radiobutton. (So that the user can see where the focus is.) I ordered the controls and set the tabindex property from 0 to 4 so that they are in the correct order. (radiobox 1 has tabindex 0, ...). When I show the dialog the first radiobox has the focus, but it has no focus rect around it. (Until I press tab key.) I created an completely empty winforms project (Visual Studio 2010), added the controls and started it. So there is nothing special at all.
Here is the code of my sample:
Public Class Form1
Private Sub Button1_Click(sender As System.Object, _
e As System.EventArgs) _
Handles Button1.Click
Me.Close()
[Code] .....
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Jul 13, 2009
I am trying to create a datatable to be shown in a datagridview.. i have created a DataGridViewComboBoxColumn that has a data source and now i wanted to create a DataGridViewTextBoxColumn but i dont know how to make it take its data from a column in a table.. i did it with the comboboxcolumn but i coudnt do it with the textboxcolumn..
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May 3, 2011
I have made report in crystal and call it from vb.net2010 but crystal report is not display, it is droped after some time when i am pressing the print button
i have put the code below to show report
--- the code
Private Sub btnPrint_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnPrint.Click
Me.Cursor = Cursors.WaitCursor
[Code].....
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Mar 27, 2009
I have an application that uses DataGridView in two different locations. In one location, the DataGridView shows everything fine. In the other location, whenever the form containing the DataGridView is initially loaded, only about half of the visible portion of the DataGridView is actually drawn; through the rest of the DataGridView, the underlying windows graphics can be seen; if you scroll down through the rest of the data, you get a choppy view of what corresponds to the bottom row being scrolled upward through each scrolled row. The only ways to get the DataGridView to show the correct values are either to select a cell, forcing that particular cell to redraw; or to invalidate an area of the window, causing that area to redraw (which it does do correctly).
I've compared how each of these DataGridViews were set up: For the one that works fine, the DataGridView is statically bound to a BindingSource, which is statically bound to a DataSet; the one that has the draw problem is statically bound to a Binding Source that is dynamically bound to a DataTable during the creation of the form.
What could be causing my DataGridView to not display correctly?
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Jan 30, 2009
I have an application with a few forms. The main form, and 2 others. When I click a button on the main form, one of the others display "attached". When I move the main form or one of the other forms around the 'attached" forms follow. The problem is that sometimes if you have another application on top of one of the forms, and click the other form, both forms dont come to the front. How can I make that happen? I've already tried things like on bringtofront for all the forms but I also don't want to take focus away and if I do that it ends up in a loop of grabbing focus via activation.
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