Edit XML In Datagridview / Populate Listbox With XML Defined Values
May 15, 2011
I'm using a Datagridview to fetch information from an XML. Each row contains a separate entry. I can read from and append to the XML database, but I want to:
A) Be able to save any edits made in the database to an XML file.
B) Store and fetch a collection of possible variables to populate a list box.
A should be relatively easy, but I don't know if B is. The XML database will contain hex values that can be written to predefined offsets, and each could be any number of bytes long. So one entry in the XML/Datagridview database could read "00,0A,0B,0C", where commas separate available write values, with each possible value being another line in a listbox. When a value is picked from the listbox it will be written to the XML.
I don't want to have to make <ListBoxValue1>, <ListBoxValue1> in the XML for each possible entry, so I'm hoping there's a more efficient way.
If you're interested in what I'm making, it's a hex editor that loads descriptions of offsets from an XML, then loads the values for each offset from a file. Here's a screenshot.
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Jan 16, 2012
I am loading a listbox with lines from a txt file. Now I would like to be able to edit values within that listbox by going there with the mouse cursor and type a new value..
E.g. the listbox displays:
7226218; Hemlock; 22.55; 4
0822722; Pine, Sugar; 11.55; 7
After editing it looks like:
7226218; Hemlock; 22.55; 2
0822722; Pine, Sugar; 11.55; 7
After pressing an "accept button" those values should then be written back to the txt file.
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Jul 28, 2011
My current code only selects a single item from a specific field. How do I make it populate the listbox with ALL the items in a field?
Try
conn.ConnectionString = "server=; username=; password= database="
conn.Open()
Dim sqlAdapter As New MySqlDataAdapter
[code]....
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Mar 15, 2012
I programmatically edit my datagridview cell values. I use the vertical scrollbar to find the row I want to edit, select the row then click an edit button that takes me to another form where changes to the record are made. I then click a button which saves the changes and returns me to the datagridview form. No problems here.
When I return to the grid, the records are displayed with the first record at the top of the grid. That is, the vertical scroll bar has repositioned itself to the very top.
Is it possible for the datagridview to "remember" the position of the vertical scroll bar so that when I am returned to the grid, the rows displayed are the same as when I left?
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Aug 27, 2009
Rather using a DatagridView Column ComboBox i need in this phase of my project, to use a listbox outside the datagridview ,o pass values from listbox to the datagridview. I do not want these Values to be default in that, column of DGV but when adding new rows i want to pass different values,always form listbox to the DGV..
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Jun 16, 2011
I am very new to programming so sorry for the simple question, but I am at a lose. What the program needs to do is take a user defined starting and ending range, and then build a table based on that range. Inside the table each record will need to have two check boxes.
So for example the user enters in a starting of ABC01 and ending ABC03 and clicks the button the table is populated like this;
[Code]...
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Apr 12, 2012
I have a listbox and i populate it with data in my code like this on the page load....
[code]...
So say one item in the list is displayed Ted Jones (123) and its valuefield should be 123. Im just not understanding what i am doing wrong here.
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Oct 12, 2011
I have an editable ComboBox with a validation on the Text property to make sure manually entered info is valid.EDIT: All I want to do is populate the .Text property with the ValueMember of a selection rather than the DisplayMember I also have the .Items populated with valid entries having the DisplayMember and ValueMember set.My DisplayMember is a caption along with the data, and the ValueMember is the data itself.So Items might be:
(DisplayMember, ValueMember)
"Foo - 1ab2" , "1ab2"
"Bar - 3cd4" , "3cd4"
I had a validation on the text which can also validate manual user input like "5ef6" The problem I'm having is that if the user selects an item from the combobox it populates the text field with the DisplayMember property (ex: "Foo - 1ab2") which will fail validation.I have tried to manually set the .Text property with the SelectedValue or the SelectedItem.Value on each of the three relevant combobox events to no avail.I would like that the .Text of the ComboBox get populated with the .ValueMember of the item when selected rather than the .DisplayMember
EDIT: I cannot validate by trying to extrapolate the value from the caption. I send the Text off to a service to be validated.
void FillMyCombo
{
KeyValuePair<string, string> listValue1 = new KeyValuePair<string, string>("Foo - 1ab2" , "1ab2")
KeyValuePair<string, string> listValue2 = new KeyValuePair<string, string>("Bar - 3cd4" , "3cd4")
[code].....
The user can manually enter something like "5ef6" which will pass validation.But when they select an item from the list, rather than manually entering it, the .Text property gets filled with the caption and not the value ... so it will contain "Foo - 1ab2" and that will fail validation. I cannot change the validation method to "infer" the value from the caption. I have no control over that service. All I'm after is the displayed value EDIT: Say a user selects "Foo - 1ab2" from the dropdown list, I want the text in the box to say "1ab2" EDIT: I have also tried to set the .Text property in code but I can't seem to make it work in any of the ComboBox events. how to programmaticly set the .Text property (and make it commit!) on a selection event they will also answer this question.
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Sep 12, 2009
I have a VS 2008 C# application that I'm converting to VB 2008.
This statement in C# works as I expected:
IPAddress IPAddr = new IPAddress(0xFFFFFF0A);
IPAddr has a value of 10.255.255.255.
However, in VB this fails:
Dim IPAddr As New IPAddress(&HFFFFFF0A)
with invalid argument (the parameter of IPAddress should have type Long).This also fails:
Dim Addr as Long=&HFFFFFF0A
Dim IPAddr As New IPAddress(Addr)[code]....
does not produce a value of 4294967050, but -246. It appears to have defined a .net type of Int32, not Int64.How do I declare an Int64 variable in VB using a hex constant?
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Mar 22, 2009
I've declared a class called WindowIDNamePair in which I associate the hwnd of a window with the window's text. (See end of this post)
I've declared an array of type WindowIDNamePair as follows:
Private windowList(0 To 500) As WindowIDNamePair To test the array and class I'm doing the following:
windowList(0) = New WindowIDNamePair(1, "a")
windowList(1) = New WindowIDNamePair(2, "b")
windowList(2) = New WindowIDNamePair(3, "c")
[Code]....
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Mar 2, 2009
I have a Report I created with Visual Studio's VB.Net ( I guess this makes my report embedded), which I can select a date range like starting and ending date but the drop-down listbox for the Name is empty and I have to type a name into it to work. I need to be able to choose the name because I won't know who is on the list.
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Feb 8, 2012
<a id="ctl00_ctl00_cphBanner_BannerAlertsLoginView_BannerAlerts_Authenticated_rbxBannerAlert_rbxAlerts_RobuxAlertCaptionHyperLink" class="RobuxAlertCaption tooltip-bottom" href="AccountBalance.aspx" original-title="ROBUX">740</a>
How do I edit the 740. For example, If button1 is pressed then. 740 textbox1.text. How do I edit the webbrowser HTML with the text box value
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Aug 1, 2010
How to put an arraylist inside a listbox but that's already solved. [URL]. There is all my code, so I need to be able to edit the selected customer, clicking on customer>change from the Main GUI. Then the CustomerFrame GUI should open, and all the texboxes should show the information that is in the listbox. There I need to be able to edit the customer and save it again.
I know this is the Code to display the item selected from ListBox in a TextBox
Private Sub ListBox1_SelectedIndexChanged(ByVal sender As System.Object,ByVal e As System.EventArgs) Handles ListBox1.SelectedIndexChanged
TextBox1.Text = ListBox1.SelectedItem
End Sub
But that's not all I need to do, the index of the listbox is divided into all the items of the arraylist. There is the complicated part. How to divide each item of the arraylist into individual textboxes?
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Jan 24, 2010
populate values from a database(Access) in to vb.net form. after selecting a field from first form , the next form should display all the parameters used in the selected field from the data base. Also if do editing it shppuld be updated in the database.
Public Class Editdetails
Private Sub Form2_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim cn As New System.Data.OleDb.OleDbConnection[code]....
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Mar 27, 2009
I've given up on my harder stuff and have simplified it to something else. There are no errors that pop up now but the list box doesn't populate! I took the code from a book and there's a data adapter, data connection, and data set on the form already (they're not named in this code though, since the book didn't say to). When the program opens, the list box has a line of text in it and the list box doesn't fill with the right items.
Private Sub EditStock_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Try
Dim dsitemlist As New DataSet
Dim itemlistadapter As New OleDbDataAdapter _
("SELECT ItemName FROM Stock", ConnectString)
[Code] .....
And here's what shows in the box.
system.data.dataviewmanagerlistitemtypedescriptor
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Apr 13, 2011
I come from Access and I am developing now my first windows form app in visual basic 2010 based on a Access database *.mdb. The thing is i have an access db with 5 tables. I have created the forms, connected to the database, all is working great. Parent- child relations are working, datagrids and comboboxes populate the right way, buttons are working.
But now I want to populate listbox, and combox from tables with queries. Like in access I would like, for example to populate two different listboxes bound to the same table with different queries, so that the listboxes give different results, based on different variables or textboxes.
But I don't know how to attack the problem: the query works against the tableadapter, so the info it gives back is always the same. I have tried to duplicate the tableadapter of the table i want to query, writing different sql queries in both, but it does not seem to work. I don't know in what direction I should ivestigate: LINQ, sql queriess, coded queries, filtering the listbox...
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Jun 10, 2011
I've been working on this for three days now and I can't seem to get my listbox to populate. I'm connecting to an sql database. Where am I going wrong? Dim cmd As New SqlCommand("SELECT DISTINCT natureport FROM rates ORDER BY natureport", conn)
[Code]...
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Oct 21, 2008
I'm trying to populate a listbox with every file that was last accessed more than a year ago but I've hit a snag, i cannot get the fileinfo for some files because the path is too deep, is there a way round this
Dim drivestring As String = lstBoxDrives.SelectedItem.ToString
Dim directoryName As String
Dim fileName As String
Dim accesstime As Date
Dim FileProps As IO.FileInfo
[Code]...
The specified path, file name, or both are too long. The fully qualified file name must be less than 260 characters, and the directory name must be less than 248 characters.
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May 7, 2009
I can get a single column but how do I get 2?
myTenConnection.Open()
myTenAdapter = New MySql.Data.MySqlClient.MySqlDataAdapter("SELECT ten_name, ten_contact FROM tenants ORDER BY ten_name, ten_contact", myTenConnection)
[Code]....
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Aug 31, 2011
I have a class with a collection of objects of type clsCDImage
clsAllCDs:
Imports System.Data.OleDb
Public Class clsImages
Private mAllCDimages As New Collection
[Code].....
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Sep 3, 2009
I'm doing a win form application in visual studio 2008 and using 7 listboxes where my sql query will populate all customer from customertable. It's 7 cause it's one for each day, my problem is to get customerid when I select one of the customers from any of the listboxes to my textbox. Since there are 7 listboxes I can't use "data bound item" function, in that case it would be easy to write code like this: textbox1.text = listbox1.selectedvalue.tostring(
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Dec 14, 2010
this is a library management system, i dont know why it doesnt work, my code in the issue form is just the same as the return form but it doesn't work right here. it just populate the listbox with the info. from the database. my code is here,
Dim nnn As Integer
Dim mmm As Boolean
Dim xxx As Integer
[Code]....
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Nov 11, 2010
Dim cmd As New SqlCommand(SQLSTR, conn)
reader = cmd.ExecuteReader()
Dim myDataTable As New DataTable
[code]....
i hve the follwoing code by which i bind the data to the grid the grid has 4 columns PRODUCTNAME, QTY,RATE, AMOUNT the user shld be able to edit the data in the column qty for as many rows it has but i m not able to edit this column how do i edit the values in the cells of column(1) ie qty?
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Jan 31, 2011
I need to check the size of textboxes in a webpage. I have already written the function which retrieves the maximum size of textbox and which writes the html codes of the webpage in a textfile. suppose i have these lines in my textfile:
<input type=text name=firstname size=30/>
<input type=text name=surname size=50/>
<input type=text name=address size=40/>
How can i change the size of all textboxes to 50 (the maximum size) in the textfile itself?
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Nov 2, 2011
I am using vb 2005. I have items in a Listbox. I want to rename a highlighted(selected) item just like same way the Window Explorer. (clicking the highlighted item, then the highlight is gone and the item string is put into rectangle box and ready for type-in by user.)
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Nov 8, 2007
So, I need to be able to edit an item that has been selected in a listbox. I need to do so with a button click event. Theoretically, I know how to do this, because I know how to add an item, and how to remove one, and how to insert an item at a specific location.
'Dim strinput As String
'Dim Item As Object
'Dim index As Integer = lstList.Items.IndexOf(item)
'strinput = InputBox("Edit This Item")
'lstList.Items.RemoveAt(lstList.SelectedItem)
'lstList.Items.Insert(index, strinput)
however, this does not work at all. what am I doing wrong??
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May 28, 2009
I have items in a listbox. I want to be able to modify a selected item in the listbox once it is highlighted, and the the modify button is clicked. A dialog box pops up with the selected listbox item in the listbox and is able to be edited.
Here is the code i have started
Code:
Private Sub ChangeASelectedRecordToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ChangeASelectedRecordToolStripMenuItem.Click
[Code].....
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Nov 7, 2011
In my listbox I get a collection of strings in this format:02406L101G0,967S or 12010C2100,978U. I should get this list on a regulated manner.haracters in the seventh,eighth and ninth place (from left side) always make the numbers eg: 101 or 210. Is there a possibility to edit the list of strings (in listbox or a listview) in accordance with the number obtained as a substring (7, 8 and 9 character)?
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Jun 8, 2011
Let's say I have 50 cars and I created 6 attributes for each of the 50 cars (therefore 300 total variables and values for those 300 variables). These attributes are created and valued based upon the following structure:
Car1Name = "Dark Red Car"
Car1Color = "Dark Red"
Car1DoorCount = 4
Car1Cost = 10000
Car1Appeal = 10
Car1BoughtStatus = False
Car2Name = "Bright Red Car"
Car2Color = "Bright Red"
Car2DoorCount = 4
Car2Cost = 11000
Car2Appeal = 8
Car2BoughtStatus = True
and 48 others of similar structure/syntax
How do I take a a module with these variables and values and populate them into a listview within a form such as Form1 and ListView1 without continuously going into listview's UI and manually entering the data? The goal is to show the USER a list of 50 cars, their color, door count, cost, appeal, and purchase status.
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Sep 20, 2010
I am trying to populate a form from a list of values. I am fetching data into a recordset. I have a textbox that displays the date, however, when I try to assign a date value I am getting the error message that I cannot set the textbox value to a textfield. Is there a way to assign the date value to the textbox?
lForm.txtFromDate = dgvRequests.CurrentRow.Cells("leaveStart").Value
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