DB/Reporting :: VB - Database - Checkedlistbox - User Browses For And Opens A Dbf File
Oct 30, 2008
Here's what I'm attempting: The user browses for and opens a dbf file. The user is presented with a checkedlistbox which shows the column headers. The user then selects the columns they wish to run a report on. ex. total # of cells not empty, longest cell length, etc.
I'm to the point of populating the checkedlistbox with all of the columns shown but I'm unsure if the users selections are actually linked to my data and if they are how I go about isolating said selections for the reports. I have a feeling that my approach to populating the checkedlistbox is not the proper way for what I'm trying to accomplish.
Here is the code
Public Sub btnGetFile_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnGetFile.Click
Dim fileLookUp As New OpenFileDialog
I have a 'DataGrid' usercontrol on my simple little form and I press a button that opens a text file and populates the DataGrid like so,
A B C 1 2 3 3 4 4 3 1 3
Where A, B, and C are my column headers.
I also have a 'ListBox' on the form. What I would like to do is, allow the user to select one, two, or three rows (or all) in the datagrid, and press a button that will move the data from selected rows into my listbox (each row its own string in the list box).
I can populate the datagrib easy enough, but don't know how to access the cell data individually?
I am working on cinema booking system project in vb.net..I have to book seats in the cinema..I have created a file for seat reservation for every movie..The seating is such that there are 18 seats and in the file have written 0s and 1s indicating reserved and vacant seats respectively..User selects a movie from a combobox and the corresponding file opens..We have to change the color of those seats which are already booked to red.Here is my code but it doesnt work..
Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles movies.SelectedIndexChanged Dim Seat As Button() = New Button() {Form4.Button1, Form4.Button2, Form4.Button3, Form4.Button4, Form4.Button5, Form4.Button6, Form4.Button7, Form4.Button8, Form4.Button9, Form4.Button10, Form4.Button11, Form4.Button12, Form4.Button13, Form4.Button14, Form4.Button15, Form4.Button16, Form4.Button17, Form4.Button18}
I have a single instance app that is working fine except for this strange (to me) issue.
The user could double click on FileA and my app opens and displays the file contents (the path of FileA has been passed as a parameter) No problem there. The problem is that if the user then double clicks on FileB and I read the parameter it still contains the path to FileA. What trick am i missing here?
(If i add a debug line that forces the code to be FileB's path the the app works correctly in terms of opening a new tab, reading the contents etc.) (vb.net 2010)
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The SaveFileDialog that opens up while clicking the export button of the CrystalReportViewer by default filters the predefined file types. Is it possible to custom define which files to be filtered?
I have a Search form where the user can click a Button that opens up a rtb with every single word (12,800+) used in the King James Bible. Every word is Capitalized ("Thankful, Grateful", etc), so in my code, the user selects a word, then right-clicks and sends the word to the TextBoxSearch in lowercase. Now, if the RTBDisplay (where all search results go) is empty, then a msgbox pops up asking if the user would like to re-search the same word in Uppercase. If they click OK then the word in the TextBoxSearch (lets says: "thankful") is supposed to become "Thankful". But instead, the TextBoxSearch goes blank. I have tried many variations of code, and here is my latest (doesn't work):
If Me.RichTextBoxSearch.Text = "" Then MsgBox("Would you like to search the same word but in Uppercase?", CType(1, MsgBoxStyle), "Re-Search?") If CBool(MsgBoxResult.Ok) Then[code]....
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Create a class called dbUpdt with the following functions: Constructor - accepts the file name of the database and stores it in a class variable. Opens the database and connection. Query - accepts an SQL command and executes it.MoreRecords - returns a boolean variable indicating if there are more records left in the dataset getField - accepts the name of the field and return the contents of the field from the current record close - closes the connection deleteAll - deletes all records in the database addRecord - accepts the table name, the key field name and the key field contents and adds a record to the database with just the key field filled in. setDBField - accepts the table name, the key field name, the key field contents, the field to be updated along with the field's contents and updates a single field within a single record.
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Public Function GetDataALFA(ByVal strServerName) Dim tmpDataString As String : tmpDataString = "" Dim myConnection
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I need a way to have 3 colums of checkboxes inside a checkedlistbox. I know i could do it with a panel, labels and checkboxes. But having them all in the control would be more convenient. I'm pretty sure there is no direct way of doing this, so i assume i need to create a user control. If you're not completely sure what i'm trying to create, i'm going for something that looks like this: [URL]
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Code: Dim comm As New OleDb.OleDbCommand("Select *, Left([Street Full Address], IIF(InStr(12,[Street Full Address],'-')>0, InStr([Street Full Address],'-')-1, Len([Street Full Address]))) as StreetFullAddress From " &
Trying to get a database into my Checkedlistbox. This is the code I have so far: Private Sub CheckDevices_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
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[Code]...
So I have the dataset with database in it, but I am struggling to get it from the dataset into the Checkedlistbox. Could someone do some quick code for this?Secondaly, I also want to set the checkbox's by using a string of integers which will look like "0110100110". If the value is a 1, I will want the corresponding checkbox to be checked, eg, "0110100110" So I would take that one, and check the 8th checkbox down in the checkedlistbox... So if anyone if feeling really generous, could use a little help with this as well.
Ive got a CheckedListBox where I have a list of devices and a checkbox to tell me whether they are on or off. I want to be able to change the checkbox in the program of a specific device and then when I click submit, it to generate a string of numbers to tell me what boxes are checked (1 for on, 0 for off)Example: Boxes 1,3 and 7 are checked in the checkedlistbox, and there are 8 total, so the string outputed would be "10100010".
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I have all connections working and I am using this code to save:
Me.RegistrationTableAdapter.Update(Me.ContactsDataSet.Registration)I need a reply asap if it is not a problem.
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Dim infoReader As System.IO.FileInfo infoReader = My.Computer.FileSystem.GetFileInfo("C:zzz-devaccesswhitneywhitney.accdb") If infoReader.IsReadOnly = True Then MsgBox("File is readonly!") End If
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[code]...
t= 2 comes from Subtracting t= 11 - t= 9 from the script in example 1. I have scripts with thousands of lines every time the program should automatically subtract the next value with the previous one and write the result into a new file starting from t= 0
I am trying to convert VB6 to VB.Net, in VB6 my predecessor has used an open command which i presum creates a file or opens a file from the directory that it is told to look in, what is the .Net equivelent of this?
