DataGridView Update Is Ok, Second Update Fails

Feb 13, 2011

I am beginning to work with .NET technology after several years of VB6 and C++ and I want to learn as fast as possible.

My problem is with a DGV. It shows the prices of several store items, and I intend to let the user modify those prices by entering a % in a textbox (radio button states if that % is positive or negative) or by editing cell by cell manually.

As editing prices is kind of sensitive, what I do is loop through the DGV, add or substract the % engtered in the corresponding column and ask for a confirmation after whole DGV loop is done. If user agrees, DB is updated with new values. No problem here.

If user denies (in case he/she made a mistake), I restore grid's DataSource to a copy I made before calculating new percentages and this automatically refreshes my grid to its original state.

The issue is that if a user denies the operation for a 2nd time, this 2nd execution of the code fails at showing the original values, disabling the pseudo-rollback function.

Here is the code:
.
.
.
If MessageBox.Show(mensaje, "Actualizo", MessageBoxButtons.YesNo, MessageBoxIcon.Warning) = DialogResult.Yes Then

[Code]...

remember this works OK if user denis once. What am I missing regarding DataSources or its Tables? Is there anything like .Redraw?

Btw, I tried update, refresh and I also used a sleep function (this helped me a few times back in VB6...).

View 6 Replies


ADVERTISEMENT

Undo Users DataGridView Edit If SQLDataAdapter Update Fails

Dec 29, 2011

I Fill a DataTable using a SQLDataAdapter then use a BindingSource as my DataGridViews DataSource. My DataGridView contains a ComboBoxColumn named "Status". There are two ways to update the Status column. One, the user can change the value by clicking a cell in the column then the combobox appears and they make their selection. Second, the user can click a button on the form and the Status for all the visible rows are changed to "Exported". I use a stored procedure as my adapters Update command.

[Code]...

View 5 Replies

Update 4 Tables.if One Update Fails?

Mar 21, 2011

In one sequence i want to update 4 tables.if one update fails i want to roll back all updations.Data should be in starting state.how i can do that in vb.net

View 2 Replies

Update MySQL DatabaseThrough Datagridview Update Command?

May 25, 2010

I have been on a database project for a while now. I wanted to be able to make changes to my database using the update command of a Datagridview control.However, I have been faced with a series of unsuccessful outcomes.I want to do this how do I go about it?

[Code]...

View 9 Replies

Update Datagridview After Update On Ok Click Event?

Apr 22, 2011

Objective to clear the datagrid view after updating. This should happen when the user clicks the OK button when the update is confirmed. Below is what i have.I currently have

Private Sub SaveToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SaveToolStripMenuItem.Click
'This updates datsource
Try

[code]....

View 3 Replies

.net - Linq-to-SQL Database Update Fails?

Aug 18, 2010

Very simple update. It simply fails, no error, no change gets made to the database.Dim db As New BarClassesDataContext Dim foo = (From a In db.articles Where a.id = 14 Select a).Single Response.Write("<h3>" & foo.title & "</h3>") foo.title = "This is my new, updated title for article ID #14"
db.SubmitChanges()

Here is the relevent portion of my article class. Also, this is a web form so I have no console. Is there another way to view the T-SQL output?

<Table(Name:="dbo.article")> _
Partial Public Class article
Private _id As Integer
Private _issueid As Integer
Private _dateadded As Date

[Code]...

View 3 Replies

VS 2008 SQL Database Insert/Update Fails?

Jun 8, 2009

I have made a small form where I have bound textbox with records from database.Although my code for inserting and updating the record seems fine and working. But when I view the database, tables i see no inserts/updates made there. But When I run my application again, I see the records in the bound textbox but only for some seconds (for around 1 and half minutes), although they are not shown in the database (tables) actually.

When I close the application and run again it after 1-2 minutes there are no more records bound to the textbox, since no records at all.How can this be possible. I don't have any idea what's going on.

I have been using visual studio 2008 and sql server.Code I have been using for ::

'Update the Records Private Sub btnUpdate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnUpdate.Click

[Code]...

View 2 Replies

Using 1 Dataset In Several Projects By Linking It Fails To Update Tableadapter Codebehind?

Oct 14, 2010

I need your support here. I have one dataset with numerous table adapters in one project. All fine. Now, in another project I am referencing the same dataset. I have added it as a link.So far so good. However, when I change a tableadapter in my main project store and close, and then open my other project the changes to the tableadapter are not there. For example, I have been adding an additional field to an adapter. But when running the second project that field is not part of the tableadapter.

After investigating a bit, I can say that, for whatever reason, when I link the datasets XSD file it created a copy of the respective Designer File. There is now a link to FundResultContainer.designer.vb, as a child of FundResultContainer.vb. But there is also a FundResultContainer1.Designer.vb as a child of FundResultContainer.xsd.

Like this:

FundResultContainer.xsd - FundResultContainer.vb -- FundResultContainer.designer.vb - FundResultContainer.xsc - FundResultContainer.xss - FundResultContainer1.Designer.vb

This could be causing my problem. However, to clean it up, I have removed the whole tree (dataset) and linked only the XSD file again. IT does again create a second designer file, exactly as above.

View 1 Replies

.net - System.IO Will Copy Files But Fails To Update Destinations File Attributes?

May 25, 2010

I have a little vb.net script that will copy a file, set its attributes to Normal, update the file time, and then set back the attributes to match those of the source file.

If IO.File.Exists(Destination) Then IO.File.SetAttributes(Destination, IO.FileAttributes.Normal)
IO.File.Copy(Source, Destination, True)
IO.File.SetAttributes(Destination, IO.FileAttributes.Normal)

[code]....

I however I'm encountering a quite strange problem. On some configurations, IO.File.SetLastWriteTimeUtc triggers an UnauthorizedAccess error, although the IO.File.Copy instruction worked very well.

View 1 Replies

Asp.net - If Status=false Then Update Should Change To Insert And If Status=true Then Update Should Be Update Itself?

Jul 3, 2009

I have a gridview in which when I click edit, update, and cancel button comes. I have a variable named status. If status=false then update should change to insert and if status=true then update should be update itself.

<asp:TemplateField >
<ItemTemplate>
<asp:LinkButton ID="lnkEdit" runat="server" CommandName="Edit" Text="Edit">
</asp:LinkButton>

[code].....

View 2 Replies

C# - Stop AJAX Update Taking Place In One Update Panel From Another Update Panel?

Sep 5, 2010

We have two update panels on our webpage. Now first update panel is having button cancel. While second update panel is having a file upload control.Now if the user uploads a file that is going to upload in about 2 mins, and in between, say after 30 seconds the user clicks the cancel button, the upload taking place in update panel 2 should stop.

View 2 Replies

Syntax Error On Update STATEMENT - Update A Row Within A Access 2007 Database

Nov 15, 2011

update statement, i am trying to update a row within a access 2007 database here is my code.

[Code]...

View 5 Replies

Sql Update - Update Database With The Value 40'6"(Feet And Inches Values)

Apr 15, 2012

I am using vb.net with access database. I am using sql. How can i update database with the value 40'6"(Feet and inches values)

View 5 Replies

Using A Datagridview To Update A Database And The Datagridview Is Bound To A Bindingsource

Dec 12, 2010

If using a datagridview to update a database and the datagridview is bound to a bindingsource which has its datasource as the table to be updated: where dshould you place the tableadapter.update(mydatarow)

View 5 Replies

DTABASE NOT UPDATING - Error (update Requires A Valid Update Command When Passed Datarow Collection With Modified Rows)

Sep 28, 2009

I have an issue with a data base updating it won't update for me in debgging mode it is stopping here on this bit of code which is highlighted in red. the error which comes up is .(update requires a valid update command when passed datarow collection with modified rows.)

Public Sub UpdateDataSource(ByVal ChangedRows As database.dataset1)
Try
'The data source only needs to be updated if there are changes pending.
If (Not (ChangedRows) Is Nothing) Then

[CODE]...

View 1 Replies

Asp.net - Updatepanel Doesn’t Update Correctly - Must Click Twice To Update

Feb 18, 2011

I am using an update panel and when I click a button it will update all the panels. updapanel1.update() is very simple, but my data is not updating unless I hit the button twice. My gridviews shows data for a selected user, and then all the grids reflect that users data. works fine all the update panels work for the gridviews. Now for somereason when i try to do a row count and update the panel with the summary, it does not work, i get either the previous users summary or if i hit update again for the same user i get the correct data.

[Code]...

View 1 Replies

DataRow Update - Does Not Update The Access Database And No Error

Jun 26, 2009

What is wrong with this code. It does not update the access database and no error.

Dim conn As New OleDbConnection

Dim sqlQRY As String = "SELECT * FROM StdMaster WHERE StuNo = " & txtStudentNo.Text & " ORDER BY StuNo"

[CODE]...

View 10 Replies

Gridview Doesn't Update Insert/update Commands

Jul 21, 2010

I have a gridview that is set to a sql datasource, it is generating the columns automatically. If I add a column to the table it is referencing, it will draw that column and display it, but it does not update the insert/update commands to include the new column. Is there any way have it rebuild those commands automatically?

View 1 Replies

Update Particular Record Using Update Query In SQL Server With Program?

Dec 2, 2010

How to use this query to update record [code]....

View 1 Replies

Bug In Datagridview Row Update?

Nov 9, 2009

Has anyone ever experienced a problem whereby a value in the first row of a datagridview isnt being saved to the dataset after the change. I have a program where the user enters for instance "3#3" this means that record number 3 should be updated so that the statusID column is 3.When i use this code all of the rows are updating except for the first row and if i want to change this then i have to click on the datagridview combobox and change it but this cannot be used in the screen on the final design so i have to extract its contents to a textbox

View 1 Replies

DataGridView Will Not Allow To Update

Jun 17, 2009

I have a datagridview with a dataTable as the dataSource. The user can add new rows to the datagridview, but I don't display the primary key column (for obvious reasons) and set it to .visible = false. When I need to update the information in the datagridview to the database, I use the sqlClient.SqlCommandBuilder to then update the underlying datasource (the dataTable mentioned above).

[Code]...

View 2 Replies

Update Sql Db Using Datagridview?

Jun 9, 2012

I am trying to update and delete data using a datagridview . When i run the below mention code i can delete from the table when when i edit its not updating my data in my database. when i run the below mention code its not giving any error as well

Public Sub CustomerUpdateBatch(ByVal dt As DataTable)
Dim connection As SqlConnection = New SqlConnection(Invoice.GetConnect())
connection.Open()

[Code]....

View 2 Replies

Update Sql From Datagridview?

Oct 24, 2011

how to update a sql table from a datagridview. I only want to update the changed rows or even better yet, the changed cells. I am setting the edited cells to a different color.The code I read the data into the datagridview is:

Dim MyConnection As SqlConnection
Dim MyCommand As New SqlCommand
MyConnection = New SqlConnection("server=servername;Persist Security Info=False;Integrated Security=true;database=IT_Inventory")
MyCommand.Connection = MyConnection

[code]....

I change the color of the changed cell using a DataGridView1.CellValueChanged event.I do have column 0 as the primary key and I know I will need to use that to perform the update, but I have no idea how to do the update.

View 2 Replies

.net - LINQ Update Method Doesn't Update The Db?

Nov 5, 2010

Public Sub UpdateStaff(ByVal sr As StaffRecord)
Dim oldSr As StaffRecord
Dim q = From staff In db.StaffRecords Where staff.Employee_Number = sr.Employee_Number Select staff
oldSr = q.First
oldSr.Address_Line1 = sr.Address_Line1

[Code]...

The helper function I have written seems to do everything I want apart from update the db. Stepping through the code, the oldSr is updated by the new sr parameter but no update on submit changes.

View 2 Replies

Asp.net - Make Update Panel Not Update Whole Page?

Oct 16, 2011

I have an update panel that has a table in it with 4 images. Every few seconds a new image is shown. All this works but when the image changes the whole page is refreshed. I am using Visual Studio 2008 and VB.Net 3.5.I only want the images in the updatepanel to refresh. How can I do that?

UpdatePanel Code:
<asp:UpdatePanel runat="server" ID="upImgSwitch" UpdateMode="Always">
<ContentTemplate>
<table height="200px" width="100%" border="0" cellpadding="0" cellspacing="0">
<tr>

[Code]...

View 1 Replies

Update Command - Errors On The Da.Update Line

Jun 12, 2011

Here's my code

Dim suppQuery As String = "SELECT [Supplier ID],[Company],[Last Name],[First Name],[Email Address],[Mobile Phone],[Office Phone],[Address],[City],[ZIP/Postal Code],[Notes] FROM [Suppliers]"
Dim dsSupp As New DataSet
Dim daSupp As New OleDbDataAdapter(suppQuery, cnPharma)

[CODE]...

It errors on the da.Update line and by the way if it helps, the text fields are a product of datarowview. that is when you select an item on the listbox the details of that appears on the text fields. and my goal is i could edit those text fields and save them.

View 2 Replies

Update Query Executes But Doesn't Update

May 27, 2010

[code]The query executes fine but the problem is that when this query executes, it doesn't update the percentage field. What might be the problem?

View 2 Replies

Update Several Records Using UPDATE Command At One Time?

Jan 27, 2010

We know:"UPDATE tt SET Points=" & iPoints & " WHERE Ref='" & sRef & "'"Can we update several records using UPDATE command at one time?

View 4 Replies

VB - .Net - Da.Update(ds) - Data Sometimes Didn't Update Or Change

Apr 7, 2011

Why is it sometimes when I update a data using da.update(ds), the data sometimes didn't update or change... for example i want to change the name or number n a record, sometimes there is no changes..

[Code]....

View 1 Replies

Add / Insert Update In DataGridView?

Apr 22, 2011

I have search online but find no tutorial/sample code in DataGridView which show how to insert, update delete.

View 3 Replies







Copyrights 2005-15 www.BigResource.com, All rights reserved