VS 2005 : Update A Bound Control After User Entry?
Sep 29, 2009
I don't think this can be that hard but I just can't get my head on it. I have a connection to an Access DB, put three text boxes representing three columns in the DB. Using the DataNavigator everything works. But what I want is to be able to enter text in say textbox1 and have textbox2 and 3 update, like when using the navigator.
Add: I want this to function like when you enter a record number in the Navigator and hit Enter, bam, goes to that record and all the text boxes update. I want to enter a number in textbox1...
View 2 Replies
ADVERTISEMENT
Jun 3, 2011
i have an datagridview bound to an access database, the table is empty so i want to use the datagridview to insert and update data to the database.so if i enter a complete row of data, i have an update button that looks like this
vb Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click Dim tableAdapter As HEALTHDataSetTableAdapters = New HEALTHDataSetTableAdapters.HEALTHDATATableAdapter()
tableAdapter.Update(HEALTHDataSet)
End Sub
View 14 Replies
Jan 6, 2012
The GridView is bound to an Access Table, but I want to update the checkbox using the asp:ButtonField. The best I've been able to do is replace the checkbox with a string value. Below is the code I have now:
Protected Sub GridView1_RowCommand(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewCommandEventArgs) Handles GridView1.RowCommand
If e.CommandName = "check" Then
'Enable Editing on the GridView
[code]....
View 2 Replies
Dec 29, 2011
Im trying to build a user control to enter date as dd/mm/yyyy. I want to create a text box control so the user can enter the date without making a mistake.ex:-Lets assume that the user is trying to enter 31/03/2010 so when the user types 3 first the next number allowed should only be 1 or 0 because there cant be any date more than 31.and if the user enters 31/ then he should only be allowed to enter a month which has 31 days. Im trying to implement this codes in keypress method.So it checks the errors at runtime and prevents the user from typing a wrong value.So far i have got to something like this but Im stuck.Please help
Dim IndexOfCursor As Integer
IndexOfCursor = textbox1.SelectionStart
chr = e.KeyChar
[code]....
View 5 Replies
Oct 15, 2009
I have created several WPF User Controls. The lowest level item is 'PostItNote.xaml'. Next, I have a 'NotesGroup.xaml' file that has an ItemsControl bound to a List of PostItNotes. Above that, I have a 'ProgrammerControl.xaml' file. Each ProgrammerControl has a grid with four different NotesGroup user controls on it (and each NotesGroup contains 0-many PostItNotes.
Then, I have my main window. It also has an ItemsControl, bound to a list of Programmers.
So, you end up with a high level visual view of a list of programmers, each programmer has four groups of tickets, each group of tickets has many PostItNotes.
The trouble I'm having, is that I want to respond to a mouse click event in my mainWindow's code behind file.
I can add a MouseClick event into my PostItNote.xaml.vb file and that is getting called when the user clicks a PostItNote, and I can re-raise the event; but I can't seem to get the NotesGroup to listen for that event. I'm not sure if that's even the correct approach.
When the user clicks the PostItNote, I'm going to do a bunch of business-logic type stuff that the PostItNote control doesn't have a reference to/doesn't know about it.
View 2 Replies
Aug 31, 2009
i am using vb.net 2005 to developed desktop application I am having two windows form user control , the first control name con.vb containing the design and code for connecting to database and getting a list of my project values in combo box.
Now the second user control report.vb which i am using to generate some reports , since the code behind is using connection to connect to various project database , so i want to get the value of
First user control into another how i can get the i have tried the below but its giving me error in run time but no error in design or code behind -
MR.MainForm.Connection1.project_combobox.SelectedV alue.ToString
Error i am getting is :
System.NullReferenceException was unhandled
Message="Object reference not set to an instance of an object."
Source="MDR"
View 1 Replies
Aug 16, 2011
I am not a .net programmer but I can write bits and pieces that I need, however, I have been having trouble working out the best way to achieve something for a website I'm altering.I basically need to have a drop down list which is bound to a certain SQL call (already in place) but I also need the ability to manually type into the drop down list for items that do not exist. These items do not need to be entered into the SQL (I can handle the additional data separately) but I cannot find a way to type inside a drop down list while it is bound to a datasource.Some entries in the datasource (SQL table) are used for one thing, but then a text string needs to be entered for optional entries which do not exist within this SQL table.
Does anyone know how I can achieve this or maybe another similar control can be used that offers this kind of functionality?**Update to be more clear:I need this at runtime. For instance, I do not need this to be within code I actually need the control to accept user input when someone is on the webpate.Imagine a shopping list and all the items are within the drop down list then the user wants to add another item to the shopping list so they just type it into the drop down box and submit the page and its value will be used instead of an existing item.
View 1 Replies
Oct 3, 2010
I added a few radio button and 1 Panel in to form project.
radiobutton click :
Dim uc1 As New UserControl1
Panel1.Controls.Clear()
[code]....
View 2 Replies
Jul 25, 2011
I have a oracle database. I use the OracleDataAdapter(Oracle.DataAccess.dll) for select, update, insert, delete operations. I don't set any (table) locks on my own(I only start a transaction). I have a oracle table named "test" with the entry "test1".
Now my question: Can Person A read the entry "test1" while Person B is updating/deleting the entry at the exact same time? What happens in the worst case? An old match/empty match or can it cause any kind of exception/error(e.g. "TableLocked-Exception")?
View 1 Replies
Nov 20, 2009
I need update the text of a textbox when I do click on a button on a user control.
How I can do that?
View 2 Replies
Nov 19, 2009
I need update the text of a textbox when I do click on a button on a user control.
View 1 Replies
May 13, 2009
I have followed the directions from this web site and the control works on a new form. But I have now written my own User Control. It compiles, I have changed Active Config within the Solution Properties to Release | Any CPU and built the Solution. But I can not find the .dll within the .NET framework Components after selecting Choose Toolbox Items from the Tools menu.
View 2 Replies
Feb 14, 2011
I am trying to update a few entries in a access database through VB.NET. With the code I used below could anyone help me out and show me where I made a mistake because it is creating new database entries instead of updating them.
[Code]...
View 3 Replies
Jun 25, 2011
code
Imports System.Data.SqlClient
Dim con As SqlConnection =
New SqlConnection("Data Source=localhost;Integrated Security=SSPI;Initial Catalog=DBNAME")
[code]....
View 1 Replies
Mar 23, 2009
I am writing a custom control which is a textbox currency control. What is the best way if I make changes to my control to have my main project use the changed control?
View 9 Replies
Oct 15, 2008
I have a datagridview bound to a table adapter. It displays data just fine. Part of this data is a comments field. When a user wishes to edit this I open a seperate form with the data in a a text box. After the user edits this text, how do I update the database / datagridview?
I can update the datagridview cell's value but that doesn't propagate to the database until the focus is removed from the row. I tried BeginEdit and then EndEdit (which should commit) but apparently it needs to move to another row!
View 6 Replies
May 31, 2010
I have a user control that I have added a listbox to. I have added this control to a form and would like to use its click event.
Private Sub mycontrol1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles mycontrol1.Click
When I click on the control on the form it does nothing none of the code for this event gets triggered. If I click on the listbox inside the user control that .click event inside the control does trigger. How can I make the click event for the user control trigger when the control is clicked?
View 6 Replies
Mar 30, 2009
i created a user control and inherited a textbox.is it possible to remove some of the inherited properties of the user control?like to Multi-Line, PasswordChar etc also at the Form Design, when selecting the user control, there's an arrow on the upper-right which i also want to remove.
View 2 Replies
Jul 29, 2010
Display a Dialog Box that asks for some user input. Take that input and add a new entry to an access datatable. Refresh a List Box that displays the Keys from the datatable. Steps 1 and 2 work just fine. After the following method is executed (without closing the program) I can open the Access Database and the data has been stored to the datatable.[code]...
View 3 Replies
Apr 30, 2011
On a Windows form I have a checkbox bound to a datatable. In the CheckedChanged event I do .EndEdit on the bindingsource and then .Update on the tableadapter. At runtime this gives an error: "Data Table internal index is corrupted: '5'.
If I change to the Validated event, there is no error, but the new state is not sent to the data base untill focus is subsequently lost, which is a problem. So how am I supposed to get the new state of the checkbox written to the database when the checkbox state changes?
View 3 Replies
Mar 21, 2012
I have a DataGridView bound to a DataTable. Although all rows are displayed in the grid, the table represented by the Grid's DataSource does not get updated after changing values in one or more DataGridView columns. Both grid and table contain a Primary Key. What am I missing here? Do I need to do something in the RowValidated event?
dgvCriticalContacts.AutoGenerateColumns = False
Dim ccRs As DataTable = Common.OpenRecordset("SELECT * FROM PhoneList")
dgvCriticalContacts.DataSource = ccRs
View 1 Replies
Jul 23, 2010
my chart loads data from a datagridview. how can i automatically update my chart with new data if new values are inserted into the datagridview.
[Code]...
View 2 Replies
Feb 2, 2011
I am working on DataEntry Forms in VB.NET There are two controls are having in a present window. One is Combobox and one is Textbox. Combobox values are Mobile, FAX, E-mail. By the mistake some one enter the values like , In the combobox-E-mail and in the Textbox-9987453434. Finally these are saved on the Database. But i want to Re Enter the values.
For this i was selected in the Combobox-Mobile and in the Textbox-9987453434. These are the right values i want to save on the database.
But here the problem is that Phone number column(Textbox) is Indexed. (Unique) or No Duplicates in the database. Now i want to update only one column which is coming from Combobox in the database.
View 3 Replies
Mar 22, 2011
im trying to update the contents of a listbox by replacing the currently highlighted entry with a new value so far i have found the following to start off column1 is my listbox
[Code]...
but it keeps saying "Value cannot be null. Parameter name: value" for the first dim. how can i fix this? or this there another way to call the selected item without this complicated
View 4 Replies
Sep 22, 2009
How to update data in a table bound to a datagridview? Using Visual Basic 8.
View 1 Replies
Dec 17, 2011
I have a DataGridView bound to a data table. I have one column where I permit updates. After I fill the table (at form load), I make an update to this column Then I attempt to update the change back to the bound table. I get the error 'Update requires a valid Updatecommand when passed dataRow collection with modified rows'. I have seen some examples on-line to define, load, and update but since I have the generated datagridview with bindings, shouldn't the update method me a simple 1-liner? [Code]
View 2 Replies
Jun 2, 2009
I have a DataGridView to which I've set a list of objects to the DataSource. (I'm in VS 2005 using VB.) I created the DataGridView by creating a Data Source of type AssetIdentifier and dragging that Data Source onto my form. I want to update the DataGridView when the selection in either a combo box or another DataGridView changes. (Below I'm considering a click in another DataGridView.)
The following works:
Public Class dlgShowAssets
' class member variable
Private assetIdList As List(Of AssetIdentifier)
' pertinent subs and functions
Private Sub RefreshAssetIdentifierDataGridView()
[Code] .....
In this case, I always knew that assetIdList would have at least one element. I'd update the list, and reset the data source of the DataGridView to that list, and all was well. When I applied this to another situation, for which I couldn't guarantee that the list would have at least one element, things would work fine as long as I had at least one element in the list, but if the list became empty, the DataGridView threw System.IndexOutOfRangeException a number of times.
The rows in the DataGridView would not go away if I went from a non-zero number of elements to zero. I tried a workaround, which was to remove all of the elements, add one "dummy" element, and then re-bind the list to the control and it still didn't work. Also, following all of those exceptions, I'd get other similar exceptions when I hovered over the cells in the DataGridView. Some of the members of AssetIdentifier were "Nothing" but I fixed that in the constructor, and the exceptions still occur.
View 1 Replies
Dec 19, 2011
I have an isue, may be its simple. but i am not able to rectify this. Here it goes. I have a form to display data from database.
The form contains Tab control with 3 tabs,it has some text boxes, combo boxes and date pickers.I retrieved data from database in to data-set (ds) using a data-adapter (da) then assigned it to a dataview (dv)
[Code]...
View 4 Replies
Apr 12, 2011
I have written some functions that I have in a module. In one of the functions I would like to update a table that is in a dataset. I would like to do this with this function and not from a form class where the table could be bound. I need to call the function from various places in the application.
View 3 Replies
Sep 29, 2011
Using VB.Net and Sql Server. I want to check the user Entry Value. The User is entering the code in the textbox, before saving to the table, I want to check whether code is already exist in the table or not.
Tried Code
cmd = New SqlCommand("Select code from table where code = '" & textbox1.Text & "' ", Con)
dr = cmd.ExecuteReader()
While dr.Read()
End While
If value is exist, then message to the user "Already Exist" other wise save to the table.
View 1 Replies
