I am trying to populate a datagridview from a .txt file but I dont know how I can do this.Text file will include data copied and pasted from excel. So the text separator will be tab.
View 3 RepliesI have a form which the datagridview will be built manually by reading in certain data from a text file (this is because the data in the text file will change periodically)The code is correctly adding the proper amount of rows but it is NOT putting the required values in the cells. Any thoughts?
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in short not populating, below is the code i'm running with but it isn't loading. Newer to Datagridview so I know I'm missing something. The SQL import I've successfully done with a listbox and borrowed some of the code from that.
Public Class Form1
Private Sub gettournies()
Dim sqlconn As New SqlConnection
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I have a DataGridView which reads data from a custom (CSLA) list object. The dataset might have 100,000 records, and obviously I don't want to show them all at once because, for one, it would take ages to load.I think it would be nice if I could read the first (for instance) 20 records, and make it so upon scrolling to the end of the list, it reads the next 20 and adds them to the DataGridView.
I have experimented with various ways of doing this, mostly using a custom class inheriting from DataGridView to capture scroll events and raising an event which adds new records. I will include the code below:
Public Class TestDGV
Inherits DataGridView
Public Sub New()
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Though this (sort of) works, it can be buggy. The biggest problem was that if you used the mouse to scroll the DataGrid, it would get stuck in a loop as it process the scrollbar's ValueChanged event after the data was added. That's why I added ScrollbarOff and ScrollbarOn - I call them before and after getting new records, which disables the scrollbar temporarily.
The problem with that is that after the scrollbar is re-enabled, it doesn't keep track of the current mouse state, so if you hold down the 'Down' button with the mouse (or click on part of the scrollbar) it stops scrolling after it has added the new records, and you have to click it again.
Historically I used Tek-Tips for stuff like this but I can no longer access my account there and they do not respond to form based mail. Maybe they got tired of the questions too :-)
I am not a student. I manage a 'large' network. Every now and then I need to roll up something for a specific task. Most of the stuff I write only sees my desktop so neatness and originality are not an issue.My current 'project' is throttling back a few of my users disk storage. I am not allowed to implement Quota's (Server 2003 infrastructure) so I thought the next best thing would be a duplicate file report. I purchased Folder Sized 4 which is a beautiful product (I have used it since it's humble beginnings as Bullet Proof Folders). The end users claim that the filename and date checks are not enough to prove a duplicate. Enter my idea.
I have cobbled together a MD5 hash generator from a function found out on the web. Now I want to send the results to a datagridview instead of my current disk files.I has thought that I could access the rows & columns like dgv.row(x).column(x) = "strFile", dgv.row(x).column(y) = "strMD5"Nope, hunting through the available properties did not point me to any likely candidates.
Again, if this is not the place for questions of this nature please let me know. I am not a programmer, nor am I in training to be one. I just toss little things like this together when needed. Importing a CSV file into Excell is working, but it seems rather lame to be taking so many steps.
I have made a list of the objects that I need on the datagridview but how do I display my list items onto the grid? How can I make each of my list items populate on an individual rows?
View 2 RepliesI am using the below code to populate my combobox inside datagrid view; i got the code below from different source hoping that it will work;
Private Sub Form1_Load(ByVal sender
As Object,
ByVal e As System.EventArgs)
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I have a scenario. Database name my_db
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Am Using an Untyped Dataset to populate a datagridview from Table_3. Issue is i really need to Show the 'ColumnStudentsName' from 'Table_1' that corresponds to 'Table_3'
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I am populating a datagridview with information from a database. One of the columns is a monetary amount. Right now my datagridview columns just show a double.
View 2 RepliesI have an unbound DataGridView control that displays a few columns of account data. The first column is a combobox that I fill with data from a dataset of names filtered by what's in a customer field on the form. When you click on a combo on one of the populated rows, the available names come up in the combo. But if the first click in the datagridview is on a new row's combo, various (incorrect) names appear. Only after you click on one of the populated row's comboboxes, does the correct data appear in the new row's combobox control.
I don't really understand why this is happening. I have been using the EditingControlShowing event to populate and add the combo to the new row, but it doesn't seem to be working very well. I hope someone out there has some ideas about the correct way to do this.
[VB 2008]. I'm trying to populate a DataGridView based on information in the Items in a ListBox (specifically, the file names without hypens or file extensions) and the content of the actual files. The DataGridView is supposed to look something like this:
IDNon-Hyphenated File NameFile Data
1. Some fileThe sky is blue.
2. Another fileThe grass is green.
The Items in the ListBox (lstFiles) look like this:
C:UsersUsernameDesktopFolderAsome-file.txt
C:UsersUsernameDesktopFolderAanother-file.txt
What is happening is that the DataGridView is being populated, but it looks like this:
IDNon-Hyphenated File NameFile Data
1 Another fileThe grass is green.
2 Another fileThe grass is green.
It's adding the second file's information to the DataTable twice and not adding the first file's information at all.
Private Sub btnDoSomething_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btnDoSomething.Click
Dim pattern As String = "([w:\w /]([a-zA-Z0-9-]+?).w+)"
Dim reg As Regex = New Regex(pattern, RegexOptions.IgnoreCase)
Dim mat As Match
For Each Item In lstFiles.Items
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My windows application uses a webservice (sql server backend) and now I'm trying to create a new form that has a datagridview control on it and I'm uncertain how to set it's datasource. I'm using visual studio 2005 and I have little experience using the datagridview control. In my webservice, I started the code that will be the datasource - should i be returning a dataset? I know that this code isn't correct, but I'm not sure what it needs:
<WebMethod()> _
Public Function SetMyDataSource() As DataSet
Using DBConn As SqlConnection = New SqlConnection(sConnectionString)
SetMyDataSource= Nothing
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I am populating excel from a data grid view. Everything works fine except that header does not show in excel (just details).
Dim wapp As Microsoft.Office.Interop.Excel.Application
Dim wsheet As Microsoft.Office.Interop.Excel.Worksheet
Dim wbook As Microsoft.Office.Interop.Excel.Workbook
wapp = New Microsoft.Office.Interop.Excel.Application
wapp.Visible = True
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I am trying to populate a datagridview with the content of a text file.
the text file contents are as follows:
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I get no error while building the project. The textline variables are being populated correctly.
I've got a window with multiple datagridviews. Each with data from a separate dataTable. All of which are part of the same DataSet. There are a couple of places where one DataTable has a field joined with the lookup dataTable from the dataset. For example a lookup table for LugSizes has a field called LugSize that is also it's primary key. Another table called Device Terminations has a field called LugSize to which the user can only select those values from the LugSize lookup table. I thought it would be as simple as using the Items.Add method for the combobox column whenever a new lookup table row was added to its own datagridview. Unfortunately, when I try to initially clear the items list, the data error event is triggered for every row.
Here's a sample of my code if it helps:
HTML
Private Sub FillLugSizeComboBox()
Try
If colDTLugSize.Items.Count > 0 Then colDTLugSize.Items.Clear()
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I have a form with a DataGridView and ComboBox, both of which are populated with data from an Excel spreadsheet, the source is unbound. My problem is in repopulating the DataGridView with data from another worksheet in the same Excel file when the user selects the corresponding value from the ComboBox. For example if they were to select January from the ComboBox then the DataGridView would load in and display the data contained on say Sheet2, selecting February would load Sheet 3 and so on. I am running Visual Studio 2008.
View 6 RepliesI've been playing with a DGV. Let's say for my question here, I want a grid that is 10x10. I would like the font in each cell to be Arial 10 regular. Only one character will be in each cell (I'll use "M"). I would LIKE the cells to be 17 pixels by 17 pixels. But, if I manually force the column width to be 17, I get about half of my M and three dots "M...". I'm thinking this is a padding thing but as far as I can tell, everything is set to 0. See code and then more comments below:
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
With DataGridView1
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Question 1: How can I reclaim some of what seems to be lost space around the cell contents so I don't have to make them bigger than they need to be? I'd like them to be 17x17 with the single character centered within.
Question 2: Do I have to manually set the height and width of each row and column? I'm thinking the RowTemplate setting but can't seem to get it to work.
FYI: This is a new project with a DGV dragged onto the form. All changes have been made programatically.
I am trying to populate a listbox using 65000 words in a text file for a hangman game, I have looked everywhere for information but cant seem to figure it out. I am using visual Basic 2010, I read something about IO.streamreader but could not figure it out. I created a txt file in my.resources with all the words i want to use to populate the listbox. I also saved a notepad version of the list in my debug folder for my project.
View 14 RepliesI am trying to populate an Access table with data from a csv file. Here is my code
csvConn.Open()
Dim objAdapter As New OleDb.OleDbDataAdapter
Dim objCmdSelect As New OleDb.OleDbCommand("SELECT * FROM [reporting.csv]", csvConn)
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The csv has 58 rows of data. The Access table I get is 58 rows of the same data as the first row of the csv. Am I not using parameters correctly?
Have a main form with textboxes on it. When the user clicks a hyperlink on that main form it pops up a new form that they drag and drop files to either a listbox or textboxes, that part works fine. All the seperate form is doing is simply grabbing the filename to bring back to the mainform. That is working correctly. What it is then supposed back on the main form is read the files, again the reading part is working fine, based on the read it's supposed to populate the textboxes on the main form. When I have the listbox that the user drops the file into on the main form rather than a seperate form it works fine, form size limitaton and aestetics are why I'm using a seperate form. When I debug it it's working fine, I can't figure out where it's dropping the info because line by line it does everything right and it shows the values in debug correctly, however when the main form regains focus the values do not appear as they would if I loaded the file directly into that main form.
View 1 RepliesI have an output file that I need to pull the current date in as a 'default' for the user. I know I can set the text over in the Properties Window, but how do I include a variable that changes based on the system date? For example, if I created the file today it would be:
File12042009.txt
I know how to format dates, I'm just not sure how or where to enter the code. Should I double click the SaveFileDialog and code it there? If so, how do I specify that I want the FileName = SystemDate? I'm not sure how to specify that I want to change the FileName property.
Im trying to populate a combo box with a column in an excel file.Im not even sure where to start. I searched around but couldn't find the info I needed or samples to learn from.
Can anyone point me in the right direction to where I may accomplish this?
I'm working on a new version of something I had created years ago in VB6. What I was doing then is populating a combobox with lines from a sequential file ("title","URL") like this:
Open "data.dat" For Input As #1
Do While Not (EOF(1))
Input #1, NameInput, URLInput
cmbEntry.AddItem NameInput
Loop
And then checking against it on a button click to load the URL associated with the selected name:
Open "data.dat" For Input As #2
Do While (cmbEntry.Text <> NameInput) And (Not (EOF(2)))
Input #2, NameInput, URLInput
Loop
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What I'm trying to do in Visual Basic 2010 is the same process, though I'll be including a third field ("category","title","URL") to determine which one of four different comboboxes I add the entry to. I know I need to use streamreader, but I'm not finding much in the way of documentation or examples on how to do what I'm trying to do, which is:
- Populate one of four comboboxes with the second value in each line of an external text file, based on the first value in that line
- Set a string to the third value in a line of an external text file, based on the second value of that line
How to read these values from the file.
I'm maintaining a WinForms application which was not written using any development patters conducive to localizing the classes in the project which were not directly associated with forms, or the code-behind partials of the forms.Thus, there is MessageBox() code with English text in it in almost every code file. I'd like to find a tool which will "scrape" those strings from the code, insert the strings in a resource file, and substitute a call to the resource with the substituted string in a comment.
View 4 RepliesI am working on a weboage that will display questions and answers (maybe 5 at one time, maybe 7 at another time) returned from a database table. The questions will each be displayed in a div and the related answers displayed in another div. The question will have an icon "Show Answer / Hide Answer"
How can I go about creating a div and then populating it with values from a table?
The general problem is that I can't get the foreign key in one of my child tables to populate the primary key from the parent table. I have a parent table named "ISSUES" and a child table named "ISSDESC". The primary key for ISSUES is ISS_ID which is an autonumber. The foreign key is ISS_ID in the ISSDESC table which is just a number. I'm using MS Access and an OLEDBConnection as the method. I've created the relationship in MS Access and also created the datarelation in the VB.NET code.
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i have a datagridviewcomboboxcolumn that i am trying to populate. i set up the DataSource property using the wizard, there after i selected the DisplayMember from a corresponding drop down of fields from the table set up in the DataSource and then lastly i selected a field to be the ValueMember. problem is when i run my program datagridviewcomboboxcolumn is not populated.there is no drop down at all. what should i do to see my drop down or perhaps i need to set up in code.
View 1 RepliesI have a combobox which populates information from a textfile, however I was wondering if it would be possible to only populate the fourth field? each field in the text file is separated by tab (space).
For example the text file has the following information
orange yellow blue brown green
pink purple green yellow black
red purple pink black neon
green blue purple gold silver
The combobox I want to display brown yellow black gold I have the following coding in place however it shows all fields in the combobox.
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I have a small requirement and that is as follows: I am calling a stored procedure and based on the results from the stored procedure, i want to display the data into textboxes. I am using DataSet and DataAdapter for the same. Can anyone help me. My code is as follows:
Dim sqlStripCmd As New SqlCommand("prcAdt_mwo_strip_det_sel", connection.conn)
sqlStripCmd.CommandType = CommandType.StoredProcedure
sqlStripCmd.Parameters.Add("@strip_no", SqlDbType.Char, 3).Value = txtMwoStpNo.Text
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I am getting the data and am able to display it into a datagrid, but how do i put it into textboxes.
I dont know why my data is not showing in my gridview, if i use an sqldatasource with the same query it works.
cmd.Connection = conn
conn.Open()
cmd.CommandText = "SELECT DISTINCT TOP (100) PERCENT dbo.tblConfig_Agent.FirstName, dbo.tblConfig_Agent.LastName,
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