I'm using a DataGridView that gets its data from table in Microsoft Access, one of the fields is a Short Time type record (e.g 16:00) but when the DataGridView is loaded it shows the record as "16:00 12/31/1899" and never shows only the ShortTime.
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I have a user control that contains a search value text box a button, and a datagridview to display what the data adapter found. In the data set designer, I have an ODBC connection to a table, with two SQL queries defined FillByCustomerName(NAME), and FillByCustomerNumber(CUSTOMER_NUMBER). If I preview the data in the designer, I see the data expected. The datagridview doesn't show any data. The functions PopulateGridByName and PopulateGridByNumber do the work. I've tried adding a dgCustomer.show statement, The form that calls the user control has no codebehind code, and throws no errors.
Private Sub btnSearch_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSearch.Click
Try
Dim SearchValue As String = CreateSearchValue()
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I have a dictionary (literally) database file in Access: its Fields are Headword (string) and Definition (Memo, it's in Rich Text). The Rich text looks fine in Access, but when I connect a Visual Basic (2008) Datagridview control to the database, the text looks like HTML, not RTF, and when I try to copy a specified "definition" into a RichtextBox, I get the same weird symbols, not RTF. One attached snapshot is how a record looks in Access, the other in a VB 2008 form with a datagridview control and an attempt to paste contents into a RichTextBox.
How can I get that same "look" from the RTF in the original Access file? I'm only recently moving from VB6; not a professional
I have a form that has around 4 txtboxes. Data is inserted into these boxes and then a "Save" Button is pressed. I have a GridView added to my form and want to view the entries. The issue I am having is that when I click the save button the data doesn't show up in the DataGridView until I close the application and then re open it.
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I have a DataGridView that loads an Access database when the application starts. I also have a bunch of text boxes that are bound to the same database. When you click on a row in the DataGridView the text boxes display the data for the record you clicked on.. perfect so far... now when I want to add a new record..
I do...
BindingSource.AddNew()
This removes all the data from the textboxes and I start typing away.
When im done I hit a Save button with the following code.
BindingSource.EndEdit()
It removes all the data from the text boxes but never saves to the database!
I have ran into a problem that i cant get my head around, I have the following code(see below) this all works fine if there is a imgID ='5'but if there isn't a record in the sql table with the imgID 5 then i get the following error Indexoutofrangeexception was unhandeled, there is no row at position 0 which just tells me that no record exists. Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Using conn As New System.Data.SqlClient.SqlConnection("Data Source=localhost;Initial Catalog=ImageGallery;Persist Security Info=True;User ID=mbish;Password=mbish") 'insert your connection string
conn.Open()
Using cmd As New SqlClient.SqlCommand("Select Imagecontent From ImageCollection where imgID ='5'", conn)
Using dr As SqlClient.SqlDataReader = cmd.ExecuteReader()
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When I add, update or delete a record using DataGridView, which events should I use for applying these changes? I'm binding DataGridView's DataSource property programatically. I only connect it with a DataTable. I'm not using a BindingSource. Is this the reason why doesn't DGV apply record changes automatically?
View 1 RepliesI'm maintaining a Datagridview on my Windows Form. When I open the form all the contained records are displaying, which is from SQLserver Table ok. when I open the form the datagridview should show just black and after I insert a new record that particular record should only display on that form gridview. [Code]
View 1 RepliesSQL statements:
SQL = "SHOW TABLES;"
Try
conn.Open()
The remarked area works fine when I'm accessing a specific table. I've successfully inserted the products_model field into the combobox too. The datagridview does show the table names in the db using the SHOW TABLES sql statment, but I'm not understanding how to get this info into the combobox instead.
I am using a not equal operator <> in my sql statement but it doesn't retrieve any record which is not equal to the selected date.
CODE:
Command = New SqlCommand("SELECT * FROM [Products] WHERE [ParkingStartDate] <> @StartDate", myConn)
Command.Parameters.AddWithValue("@StartDate", StartDate1)
stock table
fkodsno
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I'm working on this application, and I was doing the error checking on it, and I can't get the message box to show.
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I have made some changes in my code but when i do debug it doesn't show the changes.For example: In my code i create a simple text file in "C" drive.I have change the path to the desktop and when i do debug it still create it in the "C" drive.
View 6 RepliesI'm trying to put data in my listview but the data doesn't show in my listview.
When i put this code in my form i dont have any problem but when i put this inside the module the data doesn't show up.
Code:
Public Sub getEmployee(ByVal myConnString As String)
Dim mySelectQuery As String = "SELECT names FROM employee ORDER BY ID ASC"
Dim myConnection As New MySqlConnection(myConnString)
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First problem im having is that My image gets grabbed from the website but then it doesnt automatically load i have to click the PictureBox[code]...
View 5 RepliesWhen I show a file dialog and have All Files (*.*) selected files are not showing.The directories display How do I display files?
OpenFileDialog1.ShowDialog()
tbFileToLoad.Text = OpenFileDialog1.FileName.ToString
How do you refresh a datagridview in code to show to show new data in the DB?
View 3 RepliesI have a collection similar to:
Public Class MyCollection
Inherits ObservableCollection(Of MyCollection)
Private _Name As String
[code]....
EDIT: I know that I can use DebuggerDisplay, but unfortunately it is very limited. The class in reality is quite complex and I need to have the possibility to define a logic in what I show during debugging, if possible.
I'm writing this prgram for class, and everything seemd to be working right except for my calculate button. It doesn't show the Calculation. Here is my code:
Private Sub btnCalculate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCalculateTotalPay.Click
' declare variables
Dim hours As Double
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How do you make the image in a picturebox vanish when you change an option? I have tried a few different ways that i have seen but none have worked. I have it set so when i change an option in a listbox it will change the picture and data in other controls, however one option in the listbox has no data to fill in those controls and so gets left blank. However when i click on that option right now the images that were in the picturebox before get left behind until i click on another option that has a picture. So how do i remove the picture from the box?
View 4 Replieswhy my crystal report dosesnt show any of my data.
View 2 RepliesI have two tables in my database: Table1: Table1ID [Primary Key, Auto Number] Name Surname Table2: Table2ID [Primary Key] BirthDate HireDate I have created a one-to-one relationship between these two tables [Table1ID <==> Table2ID]. When I create a dataset using these tables, designer doesn't show one-to-one relationship lines? It shows one-to-many relationship lines. Is this normal? Is it always shows every relationship type like that or my one-to-one relationship wrong? I'm using VB.NET 2008 Express, SQL Server 2008 Express .
View 5 RepliesI have added a .jpg file to the resources folder in my project. I then added the file as a resource so it shows up under the resources folder in the Solution Explorer. However, when I go to call the resource file in my code it doesn't show up in the list of available resources. Here is what I am trying to do:
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I tried using: dim x as double= 10.0 debug.print(x.tostring) in my Visual Studio 2005 program but it doesn't display anything in the immediate window. It works in my Visual Basic Express 2008 program. How can I get it to work in Visual Studio?
View 8 Replieswhen people first run my program (as in the FIRST EVER time they run it), I want a window to popup (Form4). In this Form you have to locate a directory to a certain program (my program uses this program) and press OK, and then that will generate a .txt file with the directory to the program. (So that my program knows where that program is located.) Now, what I want it to do is when you open up the program, upon load (Form1), I want the program to check if that text file (directory.txt) exists. If it does and the path in the file is correct, the program will run fine. If the text file is missing and/or the directory doesn't exist, it will bring you back to Form4 (assuming that this is your first time running the program since the directory.txt file doesn't exist).
View 5 RepliesI want a message box to show when a username doesn't exist. I figured this would work but an error shows saying 'FileNotFoundException was Unhandled', for the fist line.
Dim UserFile As New System.IO.StreamReader(sPath & "" & UsernameBox.Text & ".txt")
Username = UserFile.ReadLine
Password = UserFile.ReadLine
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When i tried to run this code, it doesn't show the text box items on the text_1.txt. Its only show the tester1, and tester2 as in the quote. What did i miss out?
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When I launch VB Help and do a search it shows under "Local Help", "Exception from HRESULT:0x8004032E". It lists three results under "MSDN Online", but the large field to the left of it is entirely blank. If I double-click blindly in that blank area it brings up various topics as if they were listed there but invisible. Further, the region under "Contents" is also blank, as is the "Filter by:" field. If I click the down arrow by the "Filter by:" field it brings up an entirely blank menu. If I then click outside the menu box it brings up a message saying "The selected filter contains an error that prevents it from being applied.". What's wrong and how can I fix it?
View 1 RepliesWhen i create a windows form in VB, i want to have a picture box on my form, but in design view it shows the box, but when you run the program it doesn't show it. I want it to show the box so when you run the program it will show the box and you can click on the box and you can add the photo you want on your form and then print the form or save it.
View 4 RepliesI am using the DownloadDataAysnc. But the ProgressChanged event doesn't show progress until after the data has been downloaded.Even when I try and download a data which is contained in a big file. The programs remains responsive so I know it is doing something.However, it is when the progress has completed that the progressChanged event fires.I known this as the progressChanged and the DownloadDataCompleted fire immediately after each other. However, they should be a pause as the file is quite big.This is the code snippet I am currently using. And the output below
Results:
Progress changed Version userstate: [ Version1 ]
progressBar1.Value [ 100 ]
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