I need to delete some rows from csv file based on a column value. Here is my sample.csv file [code]In my vb.net winforom application, I have to read this file and need to delete the rows related to 06/06/10 date column values then write the remaining rows into new.csv file. So far my program works on reading whole data present in the file.[code]
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I am creating a program that allows a person to enter details about their farm, stock, and machinery in order to electronically keep track of all of the information. I have created the forms and done all the coding for the data entry, and now what I would like to do is allow the user to delete a single record from the .dat file. I am able to delete it from the LstBox (using a "Delete Entry" btn coded simply with
lstvehicles.Items.RemoveAt(lstvehicles.SelectedIndex)
(using the vehicles section for examples)), but I am unsure of how to delete it from the .dat file as well, to prevent it reloading upon data change / program reload. Also I would like to be able to have a reminder come up on the program start up that gives a reminder to (in the vehicles instance)when a vehicles rego is due, the date being associated to a date that is entered into the same lstbox data using a datetimepicker.
i just want to ask how can i save the file location or directory of a file in mysql without deleting its slashes...i tried to save it directly.. for example: the original directory is c:folderimg.jpg and when i checked it on mysql it is save as c:folderimg.jpg
View 5 RepliesI know that Deleting a specific line in a sequential text file is impossible but instead copy the needed lines and not copying the unneeded ones to an output file .. killing the old one and renaming the new one with the same.. I can't make this step...
That is my record file
Code:
Input #1, CustomerName, CustomerHomeAddress, CustomerBussAddress, CustomerTel1, CustomerMob1, CustomerID, DateRent, CarRegPin
Code:
"Josek Sam","68 West Land Street","149 Union of States","4524563","45635463","JOSKSAM1",#2009-03-02#,"MILANCGLZ2008"
"Josef Malm","142 Unions Street","64 Hamersters Street","452504","42542054","JOSFMALM2",#2009-03-06#,"MILANCGLZ2008"
"Dave Green","131 Oxford Street","96 BlueBane Route","452542452","43254345","DAVGRN3",#2009-03-07#,"MILANCGLZ2008"
I made a form that when you put your CustomerID in Text3 Box.. it access the records and make some calculations. now.. The customer will return the car.. Then his data should be deleted.. I want to know how to make that when I enter the CustomerID and press on the Command button .. It copies the other lines to a new output folder and doesn't copy these ... So it appears to be deleted using this way..
Please see Image : [URL] am not supposed to paste external links, but just wanted to share the concept clearly. In the picture, I have department and listbox. Now, I have a Table name - "Company_Data" with the Columns:
Name|Age|Department|Salary
All I want is when I select the department in the drop down, the list should show all the names under the department. Also, when I select the name in the list and click delete. It should delete the complete record from the Table.
I have a dataset bound to a DGV thus:
Me.BudgetTypesTableAdapter.Fill(Me.RestelDataSet.BudgetTypes)
When I save new data I use :
Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSave.Click
Me.Validate()
[Code].....
should work as the Rowstate is checked to see what should happen ie (UPDATE, MODIFY OR DELETE).
I have a basic Table and I can add and save data, but when I try to delete, I het this error:Quote:Update requires a valid DeleteCommand when passed DataRow collection with deleted rows.
Public Class Form6
Private Sub ConverterBindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ConverterBindingNavigatorSaveItem.Click
[code]......
[code]Index was out of range. Must be non-negative and less than the size of the collection.Parameter name: index
View 2 RepliesDim Conx As String
Dim DBx As String
Conx = "Provider=Microsoft.ACE.OLEDB.12.0; "
[Code]....
I have created a service that will update a table. <foxpro to mysql>Before the update it will delete all the data in a table<mysql> and then insert the record from the dataset<from foxpro> one by one.I have more than 5000 records and it is very time consuming, now I would like to ask for some idea if there is a way in vb.net to only insert the data that have been recently added to the table<in foxpro> to mysql table. Is it possible in vb.net to know what has been added in the table?
View 3 Repliesi am working on my first database program. i believe that I am almost finished, except that i have a remove button like i would like to remove just a single selected row both from the datagridview and the actual database. this is just in case any information is entered wrong, and also to delete all the entries i put in just for testing purposes. the only problem im having is in updating the database after removing the row from the datagridview
Private Sub btnDelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles RButton1.Click
If Not DataGridView1.CurrentRow.IsNewRow Then
[code].....
I want to use dataset for sql server for adding/modifying/deleting data from sql server.
View 8 RepliesOK so I did a noob screw up, I was cleaning my application and delting unused data sources and unused data bindings. Now my form is blank! All code shows up for the form and all items still show in the mainFrm.Designer.VB
View 4 RepliesI start my project in vb.net backend is sql server i have completed my design now i start my coding but i am confused for connectivity code whether i used dataset or datable which is good? please give me best connection code for retriving,updating and deleting data from database..
View 1 RepliesThe Save Button doesn't work when I'm Deleting data..
Here's my code
Public Class Form1
Private Sub Table1BindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Table1BindingNavigatorSaveItem.Click
Me.Validate()
Me.Table1BindingSource.EndEdit()
[Code] .....
i am creating a console app that will delete pictures from a directory every 30 minutes. Problem is that its being populated by files every minute or so. So if i go and delete files in that directory then it may cause an error trying to delete a file thats being created just then or opened.
I currently have this code to copy the files to another directory and then delete them from the source directory.Dim f() As String = Directory.GetFiles(sourceDir)
[Code]...
at System.IO.__Error.WinIOError(Int32errorCode, String maybeFullPath) at
System.IO.File.Delete(String path)
at
[code]....
i've tried to make it so Button5 Deletes what TextBox1 says I know its
Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click
If File.Exists("FILE.TXT") Then
File.Delete("FILE.TXT")
[code]....
But I want it to find and delete what TextBox1 Says.
I have an aspx page in VB that fills a pdf with data from a web form.I'm using iTextSharp for this and I have no problem with this.This is the second time I've created anything for pdf's and I'm using the code from the first script.The first script wrote the filled in pdf to a directory on the server where one person could access those via another aspx page. I wrote that code probably a year ago.Now, instead of having the filled in pdf sit on the sever, I have to email it, which I was successful at doing.The only issue left is to delete the filled in pdf from the directory.I tried to use file.delete(), but I got an error stating the the file was being used by another process.how to stop the process in order to be able to delete the file.[code]
View 3 RepliesI have been searching trying to figure out the syntax for this but it escapes me.I am adding records saving and retrieving no proble but how do I delete a record.So far all I have seen in the Database using msAccess is the record marked #DELETED but is not really deleted. Here is my code.
View 7 RepliesI'm trying to delete a file in the FormClosed method, but I get an error saying it's in use by another process. At this point in my program it's not needed anymore. Is there any way to take control of it and delete it, or is there a better method to try to delete it in?
View 8 RepliesI have the following xml file output below where Deleteme="true" is written when the user clicks on the row's checkbox. I was thinking that once the data is flagged this way I could read the data back in, somehow delete each row specified as above, and then save the data back out.
[Code]...
i've made a playlist system. It writes all the music file url's to a file separated by a comma. But I want to have a delete button that removed one of the playlist items.
This is what I've tried:
Dim EntireFile
Dim myReader As New System.IO.StreamReader(playlist, System.Text.Encoding.Default)
EntireFile = myReader.ReadToEnd()
[Code]....
The program first creates a file and use it but then I want that file to be deleted and I'm using the command as follows[code]...
View 1 RepliesI have written a conversion (vb6) tool that migrates data (SQL 2008) from one database to another and I make some temporary files (.bak files)I would like to delete after the conversion finishes. The application will not be running on the SQL Server so I need to remotely delete the files. Is there a way to delete a file remotely without having to use an administrative share or the xcmd in SQL Server?
View 2 RepliesI am sucessfully getting pictures and displaying them but having problems deleting them heres everything I am trying to do: frmCapture:Takes pictures from the webcam and stores them in a location with random filenames..User then ends this process by a button which disposes this form and displays the next one below [code]This form then gets all the files in that directory and uses back and forward buttons going through the images in a picture box.When finished the user then hits a close button that displays another form and disposes that one (this new form waits 5 seconds then tries to delete all files in that directory however its getting an access denied because the file is still in use.[code]
View 4 RepliesI have designed a form which contains a listview(to see the list records) and textboxes (used for adding or updating).an already save record into table using this
cmd.Connection = con
cmd.CommandText = "INSERT INTO student_info_tbl VALUES('" & txtUserId.Text & "','" & txtFirstName.Text & "','" & txtMiddleName.Text & "','" & txtLastName.Text _
[code].....
I have an Access table in which I connect through ODBC commands. I want to delete the 50% of data rows from it. Can anyone knows a string to write for doing that? ALARMLOG is my table. In MS SQL I tryed succesfully the following command :
[Code]...
Question: I have an ini file which I need to clear before I add info to it.Unfortunately, if I just delete the file, the permissions are gone as well.
View 4 RepliesI have a function that is called getWinTemp, it is below, the point in this is to create a temp file in the directory and then stuff it full of calculations and then delete it when the code has finished with it, does this code do that in .net??
Public Sub cleanInput(infile As String, width As Integer)
tempfile = getWinTemp
Name infile$ As tempfile
Open tempfile For Input As #1
[code]....
