Below is my code to delete the transaction. It suppose to delete the data once the transaction but the data remain there....I don't find there is a problem with the code but some how it doesn't work.
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am developing an application where a client send data to server (socket Programing) and the server recevices it and shows it to the user through a list view but the client can send the data any time they want and it should show on the list view automatically... So i have put a timer and in tick event i have written the code like this the below code is working fine in onload event but then only once the client can send the data to the
server.
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how to print data like in cashier transaction?
sample print out :
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No. : 9090
Cashier : Hermanti
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how to display data in grid view using code that you can edit, update and delete the data...do i need to have a stored proc in this?
View 4 Repliesi have a form which search data in specific date and show result in the datagridview, what i want is that when delete button is clicked all datas that in the datagridview will be deleted sameway in the database
View 3 RepliesLet's say an application needs to persist mostly immutable data. Let's say the application's data files can grow fairly large. How would you implement a simple transaction processing so that changes are either successfully committed or rolled back?
The only requirement is to use built-in .Net libraries. (no databases, no third party libraries)
Here's my current solution. The data file will have three main sections: (1) header, (2) data, (3) index. For now, the header section simply contains an offset to the start of the index section. The data section will store mostly immutable data. The index section will contain serialized objects with enough information to access the data section.
When the application starts, it only needs to deserialize objects from index section. Anything from the data section can be fetched as needed. As the application gets ready to write changes, it makes a temporary copy of the original header and index sections. These would be small relative to the data section. New data would then be appended to the original data section. Once all data has been written, in memory objects would be serialized to the end of the file to become the new index section.
If all this goes without a hitch, the temporary file can be deleted. If something goes wrong, the temporary file can be used to restore the data file to its original state.
Will this work or is there a more elegant approach?
I want to know that do you still need to rollback your transaction if you haven't commit the transaction that was created earlier.
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l cant get add data to my data base or delete any.l am using mysqlworkbench 5.3 CE , this is what l have done in vb.net. [code]
View 6 RepliesMy apologies I have posted this in the wrong catagory It should be in VB.net, my mistake)Hi guys I posted this question at the end of another topic I started but I think it will be over looked as the origional topic was solved of the dreamincode community You must all be getting sick of my quexstions by now haha I suppose you don't learn if you dont ask.
Anyway I have used the delete sql method to delete data from a database, I want to refresh the data in the form after the record has been deleted. Do I have to close the form and then open an new instance of it? or is there another way I can refresh the data?
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I got a system which i want to insert, delete, update the data into my database and the data from database will be display using datagrid. The below is the coding for one of my button, delete.
Private Sub btnDelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDelete.Click
Try
btnSearchEmpNo.Enabled = False[code].....
Now I wanna set when user click on this button to delete a employee (for example) then the datagrid that i have in my application will not show the data of the deleted employee but in the background, the employee haven't been deleted from database.The employee only will be deleted from database when the user click on SAVE button.I know this application have to use RowState but how?
How i clear all data and not delete data or column in datagridview?
View 1 RepliesI get this error at the Commit of a transaction in a desktop application:
This OleDbTransaction has completed; it is no longer usable.
Other posts I have seen with similar error suggests this can occur if it takes a long time, or contains large amounts of data. This is not the case here.Logging tells me it takes 140 ms from Begin to Commit and about 10 commands executed inside the transaction.It is using an Oracle database.This class is a simplified version of my database class:
Class MyDatabase
Private mConnection AS OleDbConnection
Private mTransaction AS OleDbTransaction
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Is it not allowed to run a select inside a transaction like this? Or can it be done by running the transaction in a specific isolation level (I see that the BeginTransaction method has an optional parameter for doing this) ? ..Or some other sollution..? In my case, it was not a problem to move the select to run before the transaction started, but what if you need to run selects that must run inside the transaction?
I've seen plenty of examples of transactions in the actual store procedure's SQL. But I'm wanting to do the transaction and keep track of it in code. I tried this but it says that my insertcommand's transaction object is null. How can I fix this?
vb Dim conn As SqlConnection = DBConnections.SQLServerConnection
conn.Open()
Dim params(1) As SqlParameter
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I have a problem with delete data in XML ... this is my code. Actually in Private Sub DELETEDiningTool(... ... so if I run and clicked DeleteData button ... all of my data in XML will be deleted.
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What is this kind of exception?
Error : Execute requires the command to have a transaction object when the connection assigned to the command is in a pending local transaction. The transaction property of the command has not been initialized..
This one causes the error: Dim oOperation As COperationOutputTypeBS
oOperation = COperationOutputTypeBS.GetOperationOutputType(txtOperationCode.Text)
I'm adding records to the table which goes fine until... I want to delete a row. The first time it said that the row was "read only" now I'm getting:
View 1 RepliesI wish to delete the contains of multiple tables, and I also wish to append the contain of table1 to table2 (both table1 and table 2 have the same exact fields and type).For the Delete, I have tried the following code and I have undefined errors for SqlCommand and CommandType.This is my code for deleting the contains of a table:
Dim queryString
As
String =
"DELETE FROM Buffer Table 1"[code].....
I was wondering if there is a code i could add to my applicatio that will delete a data entry from a database. I'm designing a voting application as my project and i want a situation where an access code is good for only one entry. i put my code for retrieving the code below.
Is there anything that i can add to the code that will delete the entry that was used to login immediately after authentication?
Private Sub btnCodeEnter_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCodeEnter.Click
Dim connect As String
Dim query As String
Dim dbProvider As String
Dim dbsource As String
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Below is my code for DELETE button. What i want is if the user select the transaction from the listview and press the DELETE button it must be able to delete the transaction from listview and text file(temporary log file) which i keep all the transaction record. At the same time the list view must able show the total current balance from the deleted trnsaction.
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in my form..there's a couple of textboxes..these textboxes display data from the database using databinding method...my problem is when i click on my delete button to delete the data displayed in those textboxes...the data will be gone from the textboxes...but when i check my database..the data is still there.....how do i solve the delete button problme???...i want the data to be delete from the textboxes AS WELL AS from the database.
here's my delete button code
Private Sub btnDelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDelete.Click
Dim intresult As Integer
Try
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Delete Data That Have Same Id In Many Table Using VB ODBC? I try this but it think it doesnt work[code]...
View 3 RepliesI am trying to delete data using bindingsource.removecurrent() ,but using the following code, it's just not working.
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bsmail is filtered in another form, perhaps the problem lays there? i don't know if the code to remove the current data is correct.
I'm currently trying to delete data from a dataset/datasource/database using visual basic. So here is the run down: I've built a program that can add, delete, and modify customer information from an Access database and I just got the add function working. Meaning, I can now add customers to the database and it is sticking to the database. I re-ran the program and even restarted the computer the computer and the data is in the database. This works fine. However, now I want to get the delete button working but I'm not sure why it isn't deleting some of the fake entries I made just to test out the add feature.Here is the code I am using:
Dim delCompany As UMD3.CompaniesRow
delCompany = UMD3.Companies.FindByCompany (NOT SURE WHAT GOES HERE)
delCompany.Delete ()
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How do I delete a data source from a vb.net project. There is no delete/remove in the data sources window and if I delete the corresponding xsd file I end up with errors in the designer file. 'm having to do this because when I change a data
View 3 Replieshow to delete rows of data without using the primary key VB.netI am using Access 2003 & VB 2005
Private Sub BtnDel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnDel.Click
Dim dt As New DataTable
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Updates were easy but we don't know how to do the inserts and deletes even though we already have the DataAdapter .InsertCommand and .DeleteCommand defined and initialised.Currently the app allows the user to navigate through the Textboxes that are bound to the DataSource and the user can just change whatever is in the Textboxes before calling .Update
View 6 RepliesWhat I want is that when i select the data from the listview1 it will also delete the corresponding data in the database im using mysql database...these is my code
Dim Button = MessageBox.Show _
("Are you sure you want to delete this Data?", _
"Message", MessageBoxButtons.YesNo, MessageBoxIcon.Warning, MessageBoxDefaultButton.Button1)
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so far that is my code..it work but in order to delete the data from database i use the datagridview does not what i want ,what I want is that when i select the item in the listview the corresponding data in the listview it will also delete in database... that code i post is that u need to select the data in listview1 and also select the data from the datagridview in order to delete the data in database..
I have JPG images with data stored at the end of them. My goal is to simply remove this data from the end of the file. The extra data is in plain text. The JPG images can still be viewed as normal with this data in them.The plain text in the end of the file starts with the beginning mark of"--------data---------", a line break, and then the data. Then there isthe end mark of the string
View 4 RepliesI wonder if it is possible to undo a transaction(delete/edit) that has been done? For example, when I delete a row in my datagridview,
View 10 RepliesI have a BindingNavigator1 binding to a datasoure. In default, we can add,delete, save data with BindingNavigator1 control. i want to know : how can i write more code to event click of "delete" button(or add , save button) in BindingNavigator1.
Example : i mean i want show messagebox yesno before delete operation is performed.
if result = yes then delete. i tried this but not yet :
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