I am trying to make a listview custom control based on the standard listview control that will allow me to drag a column header outside the standard listview control and drop it on a panel. I plan to use the drop event to determine which column I should group by view on.
View 2 Replies
Is this only done in VB by making a custom control?
View 2 RepliesI have 3 forms, one frmMain - main form, second is frmUserType- childform, and the last frmCreateUserType. In the main form I have a menu item to open my frmUserType, In this form I have a button to open another form which is my frmCreateUserType, In this form I have a button to add records then update the listview in frmUserType. The problem is the listview will not access with my add button control in frmCreateUserType. I tried not to used mdiparent declaration for my frmMain and frmUserType as children and it works, so meaning that the problem is showing my frmUserType as childform?I am using vb.net 2008
Code to open my second form (frmUserType)
[CODE]...........
Code for my add button to update the listview in frmUserType
[CODE]...........
I'm using ListView control, with SmallIcons style in VB.NET. Icons are loaded fine, but when I start to scroll ListView down or up from scrollbar (clicking from arrows), rowheight drops to about half from normal in next 20-30 rows below/above upper/bottom row (depends from the scrolling position). After 1-2 seconds, ListView is "refreshed" and scrolling continues normally. When focus in on the ListView and I'm moving up/down with arrow keys or PageUp/PageDown, everything is normal. Any suggestions, what is happening? SmallIcons size is 16 * 16. Is it compulsory to set "Blank icon" with SmallIcon size to all rows, when adding them or what? Wasn't like that in VB6, how is it in VB.NET?
View 4 RepliesI have a vb-2008 program that contains a (listview) control.
View = details
AllowColumnReorder = true
Lets say the table has 3 columns (a,b,c) and 1 row of data.
a b c
1 2 3
I want the user to be able to re-arrange the columns (by dragging the column headers) before printing the contents of the table.
c a b
3 1 2
Statements like:
.. ListViewX.Columns(2).Text
.. ListViewX.Columns.Item(2).Text
.. ListViewX.Items(0).SubItems(2).ToString
Give the column-name (c) and cell-contents (3) of the origional table .. not the (3rd) column (b) of the re-arranged table.
How can i get the column-name and cell-contents of the (3rd) column of the re-arranged table?
i want to make the listview control collapsible to the groups alone. Like in Vista's My Computer, where only the group names are shown and then we click on the group to expand it
View 3 RepliesPublic Function debugOutput(ByVal type As String, ByVal StringToOutput As String) As Integer
Debug.Items.Add(type, StringToOutput)
Return 1
End Function
For some reason only the 1st string appears(type) and StringToOutput doesn't appear at all. also how would i make a listview control automatically scroll to the bottom
I want to make the text in column of ListView control to be 2 lines. So I use the codes below to test. The result is bad. The "vbcrlf" in str2 doesnot work at all. Dim str1 As String = "Job Number12345" Dim str2 As String = "Job Number" + vbCrLf + "12345" ListView1.Columns.Add(str1, 100, HorizontalAlignment.Center) ListView1.Columns.Add(str2, 100, HorizontalAlignment.Center)
[Code]...
I have been able to associate a listview control with an imageview control to display images. There are a couple of things, I would like to do.
1> How do I display the image in the second column? 2> How do I increase the size of the image getting displayed? My images are all 48 x 48 (pixels), but they keep shrinking.
VB.NET
Option Explicit On
Imports System.IO
[code].....
I would like to know if it is possible if the columns of the listview can be resized automatically based on the information in the listview?
View 4 RepliesI am using custom textboxes and I need to be able to set the Text on txb1 based on the Text of txb2. I have simplied my code to the following:
Public Class customtextbox
Inherits TextBox
Public Event ControlReset()
[Code]....
So, when txb1 looses focus, if its Text is "fried", then it sets off txb2's ProcessAlert function. I had tried to change the value of txb2 Text in ProcessAlert function, but didnt work, so I tried to get it to raise an event instead, which then tries to set the Text property. However I still cant set txb2's Text property. The Text property seems to be set for the duration of the "life" of the Event handler. When I step through the forms controls within the Event handler, the changed Text value is there, but not outside of the Event handler.
I am positive it's possible to make a custom listview, like a custom tool or something. I have no idea how to do that though, and I googled it. Any ideas?
View 7 Repliesim trying to make the listview sort the listview items by column (whichever column was clicked, sort the list based on that column)
in vb6 it was done by:
Private Sub ListView1_ColumnClick(ByVal ColumnHeader As MSComctlLib.ColumnHeader)
Static olditem&
With ListView1
[Code].....
How do I add an image to a ListView control in code from an imageArray?
I'm new to .Net, OPP and this forum but love it!
Getting value of a PasswordBox that's inside a ListView [code]...
View 2 RepliesI have a form with a listview object and a button.I have a function that returns a Datalist.When the exception from the thread is throw in is supposed to run the Apps_Add Procedure, which it does.But on one line lstApps.Items.Add(l_apps) I am getting the following error."Cross-thread operation not valid: Control 'lstApps' accessed from a thread other than the thread it was created on."The data is being returned from the threaded procedure but I can't understand how to add the data to the ListView control without getting this error. This code works perfectly fine if I don't use threading.[code]
View 23 RepliesI did attempt searching but it just gave me a "505 bad gateway error".So my issues is the grouping header isn't working lol.
ListView1 - name of the ListView control
3 columns added to lv
3 items added to lv
[code].....
I am trying to populate a row into a listview control and only the first items shows up (the ProductID). the product name, cost, and quantity don't show up.
I guess the control's properties must be set for this. I went and added 4 columns appropriately named, but those column headings don't appear either.
My
'* Add new row to the Order details grid if the currently selected product
'* in the products grid is not already in the Order Details list view
If Not bItemFound Then
[Code]....
I would like my program to list files from a specific directory using the listview control. For an example, listing .temp files from (C:Documents and SettingsDefault UserLocal SettingsTemp) and (C:Documents and SettingsDefault UserRecent), how would I list all the files within the listview control?
View 4 RepliesI am currently using a listview WITHOUT a data control.When i click on the edit button the listview will not enter edit mode.
<asp:ListView ID="Lv_Test" runat="server" InsertItemPosition="FirstItem"
OnItemEditing="Lv_TestItemEditing">
<LayoutTemplate>
<table cellpadding="0" cellspacing="0" width="345px">
<th>
[Code]...
Protected Sub Lv_TestItemEditing(ByVal sender As Object, ByVal e As ListViewEditEventArgs)
Would someone mind explaining to me how visual basic treats a ListView object? It seems that if I create a new ListView and make it equal to the old ListView it's like filling the new ListView "ByRef" so to speak.
I'm running into problems because of this when I try to do some processing with the selected items in a new thread. Does anyone have a better solution to this than using a delegate to call a fucntion which populates an ArrayList with the ListView.SelectedItems and then returns the ArrayList?
Edit: Seems no-one is answering well let me ask a "hopefully" easier sub-question.
If i'm trying to pass a ListView into my BackgroundWorker as an argument, how do I successfully do that? I've heard someone say "make a copy". Yet I still get cross thread exceptions on my e.Argument. Tips, tricks, musings, all very welcome.
I am developing a Windows application that reads from a database and creates a total and subtotals for the records in the database. I am supposed to include a Try...Catch statement that reads the records in an Access db table and adds an item to the ListView control for each record. Each field in the record should be added as a column in the ListView control.
I have already gone through and created my Form_Load event that creates the columns needed in the ListView. I have created the beginning of the Try...Catch statement that opens the database connection. I do not know the syntax I should be using to add the record to a ListView control.Normally I would use something along the lines of to read the data:
[Code]...
I need to be able to add items to a ListView Control and to additionally add a label as well. I have included an image to serve as a reference. This is for an application I am building for a handheld device.
View 2 RepliesIn my webpage i use the following in order filling the listview control
[Code]...
I;m trying to make a program that automatically detects files in a folder and display them in my listview control with an checkbox, an image and the name of that certain file located in my directory folder.I've manage so far to make my app to populate my listview from a folder, show the checkbox, and also the image. What i cannot achieve is the following:
1. To show the path in my second Column of the listview;
2. And to run the checked files via a Command Button. [code]
In .net 3.5 windows forms I have a listview with "CheckBoxes" = true. Is it possible to dim out or disable some items to prevent the user from checking the box?
View 3 RepliesI am trying to create a ListView control at run-time and populate it with data from a SQL Query, I can create and execute the SQL query returning my desired data, I can create the listview control, but I can not get the list view to Populate data from the ListviewGroup I am creating from the SQL query. Code Snippet Follows.
Dim ItemGroupSQL As New ListViewGroup
' Create three items and three sets of subitems for each item.
a = 0
[Code].....
This will create a ListView Box and populate the data in a very odd way, every row will have 5 columns with the same data repeated in each column. I have verified (using the commented out msgbox statements you see) that the ItemGroupSQL variable is being populated correctly. but Listview1.items.addrange(itemgroupSQL.items()) does no add the data to the listview correctly
Am I using incorrect syntax for Items.Addrange?
I'm trying to use listview control in vb.net or vb2008 express edition to display records from my database after it is being queried.I have two column headers in my listview control which are named Account# and Authorized Users. I was able to display the records from the database into the listview control but i don't know how to arrange it in a proper column where it should be displayed cause what happen is all records are being combined in one column which other records should be aligned to the other column.What I want is to display the account numbers in aligned with the Account# column header and the names should be aligned in Authorized Users column header. Here's the codes I used:
[Code]...
how can i download file With a listview control?
[Code]...
Is it possible to draw an ellipse on each row of under a specific column of a ListView control like the following picture?[cde]...
View 3 Replies
