My LiveView Property is named lstView and is called by this line:
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The first reference to objListItem gets this exception: I am referring to the object as new but obviously not in the right way. objListItem is not Null when this line executes.
I'm new with VB.net, also with OOP.
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how I can use the Listview to pass the parameter to the second Forum by using the tag and the full object of vb.net.
i was coding vb6 since 4 years.and few month ago i decided to learn Vb.net and i'am working with VS08I'm would use this Socket class HereBy jmcilhinneyBut i need to replace ComboBox by a ListView and i don't really know how to do that because the both don't work
View 4 RepliesI'm using the following code to try and search a listview (I got it from msdn):
Dim atem As New ListViewItem = ListView1.FindItemWithText(TextBox2.Text, True, 0, True)
If atem IsNot Nothing Then
ListView1.TopItem = atem
End If
Then I got the " Object reference not set to an instance of an object" error highlighting the following line: ListView1.TopItem = atem So then I tried this:
Dim atem As New ListViewItem atem = ListView1.FindItemWithText(TextBox2.Text, True, 0, True)
If atem IsNot Nothing Then ListView1.TopItem = atem End If it still isn't working.
The redirect .NET uses to send users to my custom 404 page, wipes out the referringURL.[code]...
View 1 RepliesSee this example:
''//file1.vb
Sub Something()
''//...
Functions.LogInfo("some text")
''//...
End Sub
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I am trying to do is get interoperability between my "mainwindow" and a class. As far as I know the way to do this is to create an instance of the class (in "mainwindow") for example and then use that instance to call the functions etc... This works. However I want to allow the class to call functions in the "mainwindow" The moment I declare the instance on the class as well it goes into an endless loop.
View 4 RepliesI need a string of code that refers to it's filename on the computer. Basically like how batch has %0% to refer to the batch file's name.
View 4 RepliesI�m using a loop to open up a number of forms in my app. The forms are named after dates from a db. They are "created" at runtime so to speak.
Everytime a form is opened, the name adds to a dropdown list in an mdi parent form. The first item in that dropdown is a "close all". I want that item to do just that - close all the forms corresponding to the names in the dropdown list. I�m thinking of looping with an integer, starting on 1 (since the "close all" is 0).
So I need something like:
forms(mdiparent.toolstripmenu.dropdownitems(i).close
I have a map of the us that is broken into an html image map. (not asp). What I'm wondering is it possible to get the title of the refering link on the map?
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I want to create a function inside my class that will return a boolean on the existence of some data within any structures created with the class.
Public Class MyObject
Public Object1 as String
Public Object2 as String
[code]....
What I don't know how to do is refer to the object that called the function to get values, including the number of items in the referring objects array.
I Imported 2 programs that I made into one solution. I made a "BIG" main menu (new windows form), put two buttons. I code one button to open up the first project (that works fine). I code the other button to open the project I imported, however it says that the name is not declared. Am I doing something wrong?
here is my code for the "BIG" main menu:
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now only the "Original name of first project" appears to be not declared, if I delete "Original name of first project", then "the project I imported"is not declared and so forth. Note: These are not the exact names I called my forms. I'm just trying to explain it clearer.
I have added some classes to my project and now i want to define a variable as one of the classes, for example the class is called xml and i want to create a variable called XMLfile and have it as the class XML.
Can this be done? Or can variables only be declared as types (like Integer, string, etc)?If you're not living on the edge, you're taking up too much room
I'm working on a very basic VB.net frontend for an Access database and have stumbled upon a problem.
Dim ds As DataSet
MaxRows = ds.Tables("Course_assignmentsDataSet.tblCourse").Rows.Count
i = 0
Private Sub Navigate()
txtCourseReference.Text = ds.Tables("Course_assignmentsDataSet.tblCourse").Rows(i).Item(1)
txtCourseName.Text = ds.Tables("Course_assignmentsDataSet.tblCourse").Rows(i).Item(2)
End Sub
I get the error that Object Reference is not set to an instance of an Object. I think this is because I haven't defined the DataSet as "Course_assignmentsDataSet"- the one I want to use- but I'm not sure how to do this.
Does anyone know how I can include an existing dimensioned integer in VB code in a formula when using location indices (either R2C2 or R[2]C[2])?
I have integer Location set to the value 6 in some earlier programming steps, and now I'd like to be able to create other formulas and someimes use this Location integer into these formulas. More specifically at the RC and R[]C[] locations in formulas.[code]...
[code]...It is a multiline textbox, and I want to be able to enter different pieces of information (info1, info2, info3) into each line.
View 16 RepliesI have an app that pulls up a webpage that has a button on it with the following ( I CANT change the webpages, but I can change anything in the App.)
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I use the following code to get the shortcut files in a folder and to list them in a Listview control. But is there a way to extract the path of the EXE to which this shortcut is referring to ?
vb.net
Dim di As New IO.DirectoryInfo("C: est")
Dim aryFi As IO.FileInfo() = di.GetFiles()
Dim fi As IO.FileInfo
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I am developing an application which created a series of labels using code such as this below[code]...
View 3 RepliesI am making a listview and I want to display an Object.
View 4 RepliesIn C# i would do something like:
mytype val =
(mytype)mylistview.SelectedItems(0).Tag;
how can I do the same thing in VB.NET?
I'm using VB.net 2005 and sql server 2000 i'm fetching the data into datagridview, but datagridview has several datasource depending on the "select case " Now can i export the data from datagridview without referring to dataset/datatable?
View 1 RepliesI have created a user control in wpf which consists of a textbox and a listview. Now, I want to bind a class object to the list view from the form where I will use this control. So, basically I want to dynamically set the binding for the listview.
View 1 RepliesHaving a class that defining ListView in a class, then passing through the methods as an object (listview)
but having error on
Value of type 'System.Windows.Forms.ListView' cannot be converted to 'Proj.MainForm.ReadMsgClass'.
Public Class ReadMsgClass
Public ListView2ReadMsg As ListView
End Class
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First off i just want to take a bow to all the vb gods out there..I am trying to implement the sorting class form article 319399 in the knowledge base [URl]..on step number 6 it says to "Paste the following code into the ColumnClick event for the ListView:"so i created a sub to handle the ColumnClick event
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I'm trying to create a Window with a ListView and an Area where details to the selected Object are displayed. The Listview displays items stored in an ObservableCollection(Of T) Collection. The items itself contain also an ObservableCollecton(Of T) Collection which should then be displayed in the details area in another ListView, accordingly to the selected item of the first ListView.
The Problem: The InitializeComponent() throws an Exception (XAMLParseException).
Exception:Set property 'System.Windows.Controls.GridViewColumn.DisplayMemberBinding' threw an exception.
InnerException:Object of type 'System.String' cannot be converted to type 'System.Windows.Data.BindingBase'.
The Line- and ColumNumer of the Exception are Pointing at the <GridView> of my ListView (.View).This is the First ListView
<ListView ItemsSource="{Binding Path=MyObjectCollection, Mode=OneWay}" SelectedItem="{Binding Path=Selected, Mode=OneWayToSource}">
<ListView.View>[code]....
So. How can I bind to the Collection Property of an Object could be nothing?
I 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?
Do I really have to go through all this just to find out what item has been selected in a ListView?
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Isn't there something fundamental like this? Is absolutely everything in VB.NET buried beneath a colossal heap of bureaucracy?
i am developing a point of sales system. currently i have my product code scanned and displayed in a listview. lets say that i have 5 product codes displayed in my first listview. By clicking on a button, how can i use these codes to call upon the details (prices, product name, etc.) of the corresponding codes and display in another listview?
i am using Visual Basic 2008 and MsAccess as my database. who have the idea on solving my question. (As my last thread has not been answered at all..
How would one remove an item from a ListBox and then remove that line from the TextFile and repopulate the ListBox with new data in Visual Basic.Net?[cod]...
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