GetChanges() doesnt see changes made using beginEdit & endEdit?The data is bound is also bound to a DGV and when I edit there "manually" by entering cell and call GetChanges() it works correctly.
'Does RateType already exist in table?
For Each row In dsRates.dtValidLaneRates
_tableID = row.tableID
If row.RateType.Contains("Default Rate") And _
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I have a DataGridView that loads an Access database when the application starts. I also have a bunch of text boxes that are bound to the same database. When you click on a row in the DataGridView the text boxes display the data for the record you clicked on.. perfect so far... now when I want to add a new record..
I do...
BindingSource.AddNew()
This removes all the data from the textboxes and I start typing away.
When im done I hit a Save button with the following code.
BindingSource.EndEdit()
It removes all the data from the text boxes but never saves to the database!
I'm making a form that's supposed to update the table in another form's datagridview. I'm trying to use beginedit but it throws an exception that doesn't make sense to me.
BookCasesDB_dataDataSet.Books.Rows(frmLibrary.dgvBooks.CurrentRow.Index).BeginEdit()
BookCasesDB_dataDataSet.Books.Rows(frmLibrary.dgvBooks.CurrentRow.Index).Item("owner") = cboOwners.Text
BookCasesDB_dataDataSet.Books.Rows(frmLibrary.dgvBooks.CurrentRow.Index).EndEdit()
The code stops at the first line, saying that the row in question doesn't exist. Except that I know it exists, because I selected it before coming to this form. Is there something I'm missing?
Private Sub dgvfeljegyz_CellParsing(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellParsingEventArgs) Handles dgvfeljegyz.CellParsing
'dátumellenőrzés
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Public Class EasyPlayer
Private Sub EasyPlayer_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
System.Diagnostics.Process.Start("MediaPlayer")
End Sub
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I work with windows forms and on the form I have a DataGridView. This gridView I fill with a DataTable dt. The dt I fill with OdbcDataAdapter. For save the changes I use adaper.Update(dt) on Event Handler gridView_RowLeave. The problem is that dt doesn't have last changes of gridView. For exemple if I modify some data in one row or add a new row with data when I leave that row the method dt.GetChages() return false and I must leave more that 1 row for dt.GetChanges() return true.
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i getchanges from dataSet
when i am iterating through the rows I would like to check rowstate to see if row was added or modified. It says I cant check through an instance and the expression will be ignored..
Dim changes As New DataSet
changes = dsRates.GetChanges()
Dim count As Integer = 1
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Posted this over at WinForms forum, just not much activity and thought I might get a quick response here....Not real certain if I am implementing this correctly, but I am attempting to programatically modify cell values in a DataGridView control with an underlying DataTable as it's DataSource.
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I'm currently working on a VB .net project that requires connection to a MySQL table. I've no problems loading data from MySQL table to a datagridview. I'm hoping to allow users to make changes to the datagridview and save those changes back to the MySQL table. Below is the Sub I wrote to save the changes. Before saving, it will check if there were any changes made to the datatable. However, datatable.getchanges() does not seem to detect changes made to datagridview (and hence, datatable; I "bound" the datatable to datagridview by means of bindingsource).
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In VB.NET:
DataTable.GetChanges(Not DataRowState.Deleted)
What is the equivalent in C#?
I have a detail form that get filled in by values from a table adapter. When the "endedit" is called as part of the update routine, one of the fields is changed for no known reason.
How can I find and look at the actual code that "endedit" uses?
Or how can I regenerate the code?
I set a radiobutton.value to true. when I go to save and perform bindingsource.endedit. radiobutton.value is then nothing. any ideas as to what could cause this?
View 1 Repliesradiobutton.value is nothing on bindingsource.endedit
View 11 RepliesI have data bound text boxes that loose the entered data in "BindingSource.EndEdit() code. This would seem to violate all forms of logic. I have provide my code below as well as a copy of the debug.print data.
Private Sub SaveToolStripButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles SaveToolStripButton.Click
Me.Validate()
ErrorTrap = 0
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From what I've read in the documentation, both of these methods roll the state of the datarow back to where it was the last time AcceptChanges was called. So what is the difference between them? Am I wrong about that?
View 4 Repliesi have a datagridview bounded to a bindingsource that's pointing to a datatable created at runtime. In the same form i have a Add New, Save and a Cancel Button,the Add new calls the addNew, the Save Calls the EndEdit and the cancel the CancelEdit. Now the problem, if i fill only some fileds in the new row and call the cancel edit, the row is deleted, but if i fill all fields and i call cancel edit nothing happens.What i want it's, when i press the cancel button even if i put values in all fields the row get deleted.
View 1 RepliesI have a datagridview that completely updates anytime changes are made to it. It is not connected to a source but rather the datagrid is filled when first launched.
View 1 RepliesI have bound TextBoxes. When I edit anything, I have to move to the next or previous record before calling the Update Method for that record to be updated. With my DGV, I use
vb
Me.dgvSalvageListing.EndEdit()
and it will update as expected. So, how would I do something similar to my Simple Controls?
vb
Private Sub UpdateDb()
Try
' Write changes back to db
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Not certain what exactly I am doing wrong here, but I am having problems in setting a new DataTable (for posting back to the database) to the Changes resulting from the Merge proc of 2 DataTables. The code works fine until I attempt to set the ChangesTable --- it always ends up = Nothing.What is strange is that the "preMergeCount" = 0 and the "postMergeCount" = 23, which is EXACTLY how I expect it to be! So I know that the Merge is working correctly.
Dim sqlTable As DataTable = dsMonitoring.Tables("SQL_SRTraps")
Dim exlTable As DataTable = dsMonitoring.Tables("Excel_SRTraps")
AddHandler sqlTable.RowChanged, AddressOf Row_Changed
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I am trying to change the background color of a tooltip
I am using tooltip.backgroundcolor = color.colr
No errors but thecolor doesn't change
I use Visual Studio 2003, VB.net, NetFramework 1.4 and Windows XP I have been using the following Code Snippet for a number of years in both Web Services and Windows Applications. However suddenly around the 29th September 2010 it has stopped sending E-Mails from both Web Services and Windows Applications. The same problem has happened not only to my own Network but on two other Networks, one using XP as its Server and the other using Server 2003. All 3 of these are using different ISPs.
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The form is an About Us form so has nothing on it only a text box and a OK button.
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Why won't the button close the form? I'm puzzled, I tried another button just in case with the same result. UPDATE: I set a break point on Me.Close() and it isn't reaching it when I click the button, I created a new button and the same thing happened.
I finished my first FPS demo level that I created with Visual Basic .net. The source for this game is open source. I went as far as to make a 12 step tutorial on how I did it.
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i am creating a web browser to make something i do at work a bit easyier to manageits a form with a few tabsi need each tab on form1 load, to start individual .exe's that i have already created.these .exe's are simple web browsers that are automatically navigated to a website with a asp query for loginthe website for each tab is identical only the login asp querychanges.the reason for this is i cant use a single .exe otherwise it retains the login and i get identical logins on each.
View 9 RepliesHow to run the application that is made by VB 6 to be run in VB 8?
View 2 Repliesso i follow this tut Sockets in PHP and it would be nice if i can connect my vb.net app to it or isn't that possible..if that's possible will it run always (when the site is online)
View 3 RepliesLets say I have a class called "Item" and "SubItems"
Public Class SubItem
Private _SubItemName As String
Public Property SubItemName() As String
Get
Return _SubItemName
End Get
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How would I create a service that would return a list of Items and upon looking up an individual item I would be able to see the sub items.
I need to modify this code to add 1% interest rate to the new and used rates when less than a 20% down payment is made.
I've already added in the constants for the increased interest rate, but hit a wall there.
Public Class Form1
' Class-level constants
Const dblMONTHS_YEAR As Double = 12 ' Months per year
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I have a table (applicants) and using a GridView various individuals will be making changes to the values in this GridView. I've created another table (history) which I would like to use to log these changes. Right now I have this to capture the changes:
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I have to make an application that make pc-phone and pc - pc call with asp.net. However examples I see on the web are generally made as windows application. Can anyone give me refference, examples, documents about voip and asp.net?
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