.net Database Software Added Records Are Unable To Edit?
Jun 21, 2010
Dear Friends I have Developed a Successful Database Software, it include Datagrid, First, Last, Next, Previous, Add, Delete, Edit, Update, Search just Every Thing is Working Nice, But I need help from one of expert from you. my problem is that every time when i Start program its all functions are workin including edit and delete. (mean data (rows) Added at previous run is able to be Delted at current time) but when i add new record at current run time it adds succesfully, but while at same run time session (current) i tries to Delete or edit new added roecord it is not working, in simple words new added records are not able to delete and edit at same run session. i m including project's zip file and plz try to run it and add new record, after adding record at same time try to edit or Delete new added record.
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Mar 18, 2012
I'm working on a simple data logging program, and I have little to no database experience. I wrote a little VB forms app to log the data to ms access and then graph the data, but I'm having trouble with adding records to the database. First, I created a simple one table database in access. Then, I added the database to the project as a data source, and gave it a data set using the wizard. Right now my code looks like this:
[Code]...
There are no problems during build or run time, but I do not see changes to database after the program runs.
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Jun 6, 2011
how to use datagridview and why and when we use adaptor and data reader
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Oct 14, 2009
I'm using visual basic 2008 express edition by linq to sql for my database operation such as edit records. I did not use any sql server but I'm just using the built-in sql server within the visual basic 2008 express. I tried to revised the codes, no error in syntax but there's an error at runtime and it pops-up a window message saying its error message. What I want is to edit the records which were retrieved from the database into the text-boxes and when you click the button5 whatever the new value on the text-boxes should replace the previous one.The Account field is the field in my Table1 in memrec.dbml which I set up for primary key is true and the rest of the fields are false in its primary key.[code]...
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Oct 14, 2009
I'm using visual basic 2008 express edition by linq to sql for my database operation such as edit records. I did not use any sql server but I'm just using the built-in sql server within the visual basic 2008 express. I tried to revised the codes, no error in syntax but there's an error at runtime and it pops-up a window message saying its error message. What I want is to edit the records which were retrieved from the database into the text-boxes and when you click the button5 whatever the new value on the text-boxes should replace the previous one.The Account field is the field in my Table1 in memrec.dbml which I set up for primary key is true and the rest of the fields are false in its primary key.The code below still found an error when you run the program and it pops-up a window which says:
NotSupportedException was unhandled - Sql server does not handle comparison of NText, Text, Xml, or Image data types.It highlights a yellow background on the line:
db.SubmitChanges()
These are what I see on each field's property on Table1 in memrec.dbml property window:
Access - Public
Type - String(System.String)
Server Data Type - Text[code]........
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Oct 26, 2009
When i tried with the code discussed in this forum i am able to add records but not modify any particular existing record.
[Code].....
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May 12, 2010
how can i access the sql server express database table in vb.net on forms to insert records,delete records,search records,edit records.I have made table by using visual studio.
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Mar 13, 2011
I need to be able to save, edit, and delete records in an access database through vb2008. Editing and deleting records works perfect, but I cannot save new records. Can anyone assist?
Here is my code
Imports System.Data.OleDb
Public Class Main_Form
Dim con As OleDbConnection
Dim cmd As OleDbCommand
[code].....
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Sep 26, 2009
This is the hardest part of LinqtoSql database handling operations in visual basic 2008 I ever encountered,w/c is the update operation cause Ive been posting this thread several times from the other forum site but noone yet was able to answer my question,examples were given but its not efficient cause it won't specify based on the codes i gave and i know its not easy but im still hoping that one of the answerers of this forum will be able to resolve this particular linqtosql operation codes. I used textboxes in manipulating all data into the database such as displaying records, adding records, & updating records, basically I used with textboxes in doing those database operations. I will give you 3 block of codes w/c corresponds those database operations I used and differentiate from each other inorder for us to determine why one of them has no progress or won't do its operation w/c is the update operation...
*************Block of Codes#1(Adding Records)*************
Private Sub Button1_Click(------------------) Handles Button1.Click
Dim db As New memrecDataContext()
[code]....
I would like you to identify,differentiate, or troubleshoot the block of codes#3, or anyhow, why it has no progress at all or it won't edit and change the records but it runs and no error in regards with its code, and the other 2 blocks of codes were able to successfully do its operations.I was just wandering why only the block of codes#3 is not doing its operation successfully when you change the record being displayed in the textbox.Is there a possible way to edit records in the textboxes?If there is.... Is it possible to debug the block of codes#3 to successsfully do its operation? If you could possibly give an example,can you based it on the block of codes#3?
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Jan 5, 2010
I'm trying to use a DataGridView Control to Add/Edit/Delete records in a simple database
table.I used the wizard to create the datagridview and it created a dataset a bindingsource
and a tableadaptor.When i run my project, data that is in the database table is displayed
correctly, but I can't add/edit/delete. What events/actions do I need to perform to add
these capabilities?
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Aug 27, 2008
I am a Visual Basic Programmer and presently migrating our applications to Vb.netQuestion : I need to access the records from a MS Access database to the Text box or for some user login validation using vb.netso i coded to give a message box if any row is returned by the connection.but its not all selecting any rows even though i queried as "Select * from <Table Name>"also i am unable to debug it.....I am attaching th code snippet used along with this mail.plz revert back if there is a solution.[code...]
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Apr 8, 2012
i have a datagridview with (a lot of) rows. With a click of a button I add them into a table. Everything works fine. I want to create a log of the records that have been added into the table.
[Code]...
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May 7, 2008
I'm trying to build a new customer data entry page for a db project. One of the features I would like to add is a way to check and see if there have been any new records that have been added that haven't been explicitly saved to the db. If so, when the form_closing events fires I want to evaluate whether or not new entries have been made that weren't saved, and then count the number of rows that haven't been saved.
[Code]...
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Jun 28, 2011
I've created a database in Access 2007 and connected it to Visual Basic 2008. My database have tables Coachee and Coach. Details of Coachee are displayed in one form and there's a button that when clicked will show details of the Coach of that particular Coachee in a another form. If the Coach is not in database, user will be prompt to insert a new Coach record. Problem is, when saved, the newly inserted record will not be displayed and i have to exit and rerun the program, only then the record will be displayed.
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Jun 21, 2010
add edit and delete records in access using vb.net.i got textbox 1 to5 and three buttons which named addnew ,edit, delete.my database is in name records.mdb i want user to enter the information and click addnew button and the system save the records and so on with edit and delete.
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Aug 17, 2009
I have a DataGridView bound to a non-SQL Server database.I need to allow users to edit existing records but under certain circumstances I need to intercept the edit and instead of committing and updating the dataset I need to delete the edited record and re-add it as a new record.I have tried using every event I can think of to do this but haven't managed to get it right. [code] This almost works but sometimes completely messes up and re-adds rows twice and all kinds of other bad side effects.
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Aug 17, 2009
I have a DataGridView bound to a non-SQL Server database. I need to allow users to edit existing records but under certain circumstances I need to intercept the edit and instead of committing and updating the dataset I need to delete the edited record and re-add it as a new record. I have tried using every event I can think of to do this but haven't managed to get it right.
The closest I have got is with this:
Dim theRow As DataGridViewRow
Private loading As Boolean = True
Private rowLeft As Boolean = False
Private WithEvents cm As CurrencyManager
Dim copiedRow0 As String
[Code] .....
This almost works but sometimes completely messes up and re-adds rows twice and all kinds of other bad side effects. It seems a really simple thing to want to do but I just can't get it working.
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Jul 18, 2011
with vb.net + access 2007 i am having a database with 2 tables & 4.85 lak records
the task:i want to Loop through all the records & compare the Current record with the previous record & edit the database with some changes as per logic i have written a procedure but the process is very slow approximately it is taking 1 to 1.5 second to check & edit a record
here is my code
vb.net
Private Function ISCasuaLty(ByVal CAStype As String) As Boolean 'this procedure checks whether the duty type is of Casualty'& returns true if the casualty is "Y" else "N" FALSE If CAStype = "" OrElse CAStype Is Nothing OrElse CAStype = " " Then Return True ' there
[code].....
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Apr 27, 2010
My application has to do a lot of work when I press as single button. When he is doing this he got to changes sometimes a few tings in a textbox. Sometimes the calculation can take more then 10 - 15 minutes, is there any way to make it doesn't say not responding? And you are able to work further in the program. I did try backgroundworker but I'm not able to edit the textbox.
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Mar 14, 2008
I'm using Visual Basic 2005 and I have created a program to display, edit, and create insurance records. Right now I am using an access database and it is hosted locally. What I want to be able to do is host it on our server here at our office and have the program installed on every computer on the network.
My connection string at the moment looks like this:
Code:
Public con As New OleDb.OleDbConnection
con.ConnectionString = "PROVIDER=Microsoft.Jet.OLEDB.4.0;Data Source = C:Insurance ProgramInsurances.mdb"
'Opens connection
con.Open()
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Oct 19, 2009
Is it possible to do a multiple records editing by linqtosql method in one click event? What I've been trying to do is to edit all the names in the table which are having the same account number. I was able to edit but only one name has been edited and the rest are not.
The codes I used.
Private Sub Button2_Click(------------) Handles Button2.Click
Dim accnt As String
accnt = Textbox1.Text
Dim db As New memrecDataContext()
Dim editrecord = From mem In db.Table1s
[Code] ......
Why is it these codes could only edit records in one datarow?
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May 17, 2006
I can retrieve records from my Database fine, but I'm having trouble updating records. I am getting a syntax error on [code] I get this error when I change the Last Name (Row 0, Column 1). [code]
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Apr 6, 2008
I am looking for sample code that will allow me to read, write and edit records to a local MS Access DB using VB9.For my project, the datagrid and other controls are not an option.I have looked everywhere and cannot find any code examples.I assume it should be straight forward, but with all the changes in VB9 its tough.
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Oct 27, 2009
how to get records into oracle database delete from db & update the records i have successfully connected my vb 2008 win form with oracle 10g.
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Aug 15, 2010
adding and updating records from VB to MS Access.
code is as follow:
Private
Sub btnNSubmit_Click(ByVal
sender As System.Object,
ByVal e
[code]....
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Apr 23, 2012
When I modify and delete data in a DataGridView, I get the error:
The record cannot be deleted or changed because table 'Table Name' includes related records.
but I can add new data, only cannot modify and delete data.
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Nov 7, 2009
I have a blank form, and I've added a really simple Access database with two tables with two columns each. If I click and drag the name of one of the columns, and drop it on the form, I get a label and a textbox.
I was assuming that since the load procedure already had Me.WhateverTableAdapter.Fill in there, that when I pressed the green arrow to run the program, I'd be able to flip through the records in the column.
When I click "preview data", I do see the data is there, but when I run the program, it says 0 records and none load. Is there something else I have to do to be able to flip through the records in that one text box?
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Feb 6, 2010
In my application, I open a "Customer Details" form and on confirming I have to delete all records from other 2 tables (Order & OrderDetails) of the database. I am not able to delete records. It somehow stops by on - ordDetAdap.Update(ordDetDs) . The code is as follows :
[Code]...
There may be N number of Orders and each order may have N number of OrderRedetails. There are rows and also shows proper data in MsgBox, also row.Delete works fine, BUT why does it stop at Update(OrdDetDs) I can't make out. Any idea where am I going wrong.
Also Is their any easy way out to delete all records using just a single statement providing OrderId from OrderDetails table ? As of there are 10 rows of a single order, then For loop will iterate 10 times and delete 10 rows, instead if I can delete all 10 rows at once would be beneficial.
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May 15, 2011
I have a program which I am converting from VB6 to VB2010 this is also my first venture into sql. I have read many of the examples to try to get to grips with deleting records including those in this forum by imcilhinney
My problem is that I want to delete all but one of the records when the user presses a button, everything goes well until the 'ExecuteNonQuery' is reached.
[Code]...
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Jan 20, 2011
I am using VB.Net 2010, and when I run the following code, I get System.Data.DataViewManagerListItemTypeDescriptor displaying in the dropdownlist box
cmbProdType.DataSource = ds
cmbProdType.DisplayMember = "ProductType"
cmbProdType.ValueMember = "ProductCode"
When I hover over the datasource, I can see the correct records. But its not displaying in the dropdownlist control.
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