DataGridControl Not Showing Records
Jul 6, 2009
I'm trying to learn how the DataGridView control works. I started by creating a new Windows application and dragging a DataGridView control onto the main form. I displayed the DataGridView Tasks dialog box and clicked Choose Data Source. I then clicked the Add Project Data Source link, clicked the Database icon for Choose a Data Source type, and then New Connection. I changed the Data Source to Microsoft Access Database File and browsed to the Northwind database on my local C: drive. When I clicked Test Connection, it succeeded. I clicked Yes to copy the file to my project. I chose the Customers table (all fields) and Finish. In my form, the DataGridView control properly shows the column headers; however, when I press F5 to run it, it shows only one blank row and no records. If I use the Preview Data option, it shows the data correctly; it just won't show the data when I run the form.
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Jun 1, 2010
I have Access 2007 db in which users insert some data (name, last name etc.). This db is for some problems in my work and every of this records needs some solution. When we solve this problem we come back to this record and select YES in yes/no field of db.I want to count inserted records and show it on first form of my application like this (label or text field, it is not important) :
* all records : 124
* solved records : 50
* not solved records : 74
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Apr 29, 2011
Private Sub cmdLogin_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles cmdLogin.Click
Dim conn As MySqlConnection
[Code]....
i supposed it can show the result of count(ID), in this instant it is the number of records count on the OUTBOX so the debug.writeline is RESULT, instead of now it is showing "SELECT COUNT(ID) FROM OUTBOX"
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Apr 2, 2010
In order to avoid clashes between drivers in my taxi system I want to be able to choose available drivers when filling out the booking form. In order to do this I needed to:
Select all records in "column" from "tableA" which are not in "column" in "tableB".
I have this:
Private Sub BookingFillDriverComboBox()
con = New OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=D:My DropboxDocumentsTaxi Service ProjectDatabaseTaxiProjectDatabase.accdb;")
con.Open()
[Code] .....
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Apr 23, 2012
I have a query (qryTallyMedalInformation) that i bound on datagridview and it has 5 columns ( country, athlete, medal, game and date). Instead of having country in the datagrid, I want to use it in a combobox to display records base on country selected.what i did (with wizard) doesnt work fine though. My country combobox shows duplicate data and the datagrid is showing all the records from different country. In one word I JUST DID NOTHING.
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Mar 31, 2011
I have a problem with the combox its only displaying the first item in the list its being populated by a webserice call the drop down in question is comboboxmodel now the manufacture one is fine and sets as it should any reason as to why the comboboxmodel would not. [code]
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May 17, 2006
I can retrieve records from my Database fine, but I'm having trouble updating records. I am getting a syntax error on [code] I get this error when I change the Last Name (Row 0, Column 1). [code]
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Oct 27, 2009
how to get records into oracle database delete from db & update the records i have successfully connected my vb 2008 win form with oracle 10g.
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Dec 29, 2011
How do I update records in a dataset with records in a transaction file?
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Feb 9, 2010
I want to search the records from the textbox and display the records to the datagridview, if there are no records, just display empty on the datagridview.
this is not working:
Dim sqlsearch As String
sqlsearch = "SELECT * FROM setting WHERE mname LIKE '%" & TextBox.Text
[code].....
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Mar 27, 2012
I have this piece of code wich works perfectly when inserting records into one table using records from another table. My question is that now i need to create another table by using records from 3 other tables (tables are related). Can i use aliases on the column names, like on Oracle SqlPlus? How will be the syntax of the 'INSERT INTO SQL statement?
Dim MyConn As ADODB.Connection
Dim MyRecSet As ADODB.Recordset
Dim tmpSQL As String
MyConn = New ADODB.Connection
[code]....
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Apr 17, 2010
I am working on creating a program that records animal data (wombats) and stores it into a database, using vb.net. I am trying to add new records into a database but every time I click add, to execute that, there are duplicate records that gets added. How do i write the code so itonly adds it one time. I am using a data reader. Here is the
[Code]...
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Mar 11, 2010
I want to search the records from the textbox and display the records to the datagridview, if there are no records, just display empty on the datagridview.[code]
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Sep 29, 2009
I have a dataset containing 2 tables,Customers and Contacts. Just showing the master-detail is not a problem. Problem occurs when I try to search the master table to bring in the detail table. Searching the master table shows only the master record, but not the related detail records. Adding a 'findby' query on the detail table only shows the records.url.. Normally when the master table is filled, the detail record shows in a form.
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Apr 22, 2012
I have a database with 3 tables: Student, Unavailability and Duty.The fields for Student are entered in a form I have. One of the fields in Unavailability is filled by a form, the other fields are an autonumber and a foreign key to the Student table.ow I want records in the Duty table to be created and automatically filled in depending on what the values of the fields are in the Student table.For example, If the Boarder field in the Student table is 'yes' then I want the Duty Number field in the Duty table to be '1', '3' and '4'. If it is 'no' then I want the value to be '2' and '5'. I recognize it will have to create several different records to incorporate the different duty numbers for each StudentID. Obviously this will require an if statement, however this is my first time implementing a database with my limited experience with programming and Visual Basic, so I don't know how to refer to the specific fields in a table and set the value of other fields depending on the data in other fields.
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Jun 2, 2011
It's been a while since I've had to add a CheckBoxCol to a DataGridView, so I copied and pasted the code directly from the example shown in the MSDN library page here: [url]Anyway -- the column is added as expected however, there is no checkbox! (see the column "Accept" in the image I've posted). I was hoping I am missing something easy/obvious, and I've had success with this before in other apps so this is becoming frustrating.DGV's Datasource is set to a datatable found in a Dataset. Everything loads just fine. No errors.
[code]...
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Apr 21, 2009
I have added a dll to the gac by using the following line of
C:WINDOWSMicrosoft.NETFrameworkv1.1.4322Gacutil.exe /i TARGETDIR "c:mydll"
When I open vb 2003 and try to add a reference to a project, I dont see the DLL. what I must do to be able to add it as a reference?
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Jan 2, 2010
I have built an application where there is a MDI parent form and other forms which i have not declared as Child forms but have set these forms not to show in Taskbar. While the application is running, if i have any of these forms open and i switch over to any other application other than this and when i come back to it, all these forms hide. I cannot reopen it or see it anymore.. Why is this happening?? how can i sustain these forms as it is even when i leave the application.LuxCoder
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Oct 31, 2009
Now I not had much use with VB.All I want to know is if there is any way you can have a ruler and grid showing while you put together a GUI?
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Nov 23, 2009
How would I go about showing Album Art in visual basic.I use the windows media component and I would like to show the art in a picture box.
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Apr 20, 2012
I saved image in sql server database.Now I am getting image from sql server database, by the following code but my image is showing in image control.But in this code i am saving this image in project directory. I want this image without saving, direct from my sql server database[cod]e...
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Feb 23, 2012
I have added a MDI parent to my application and assigned all new forms to it (i.e. Form1.MDIparent = myMDI). When i hide and then show a form, it loses all of the data previously typed in the textboxes.
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Jun 23, 2011
I've done everything. Deleted the code and dragged new controls from the toolbox, renamed, tried from javascript -- I just can't get this freakin' modalpopupextender to show. Wasted 3 days.I'm trying to show it via VB code-behind in the on-click even of the login button. Everything else executes in the button's code, just not this line:[code]
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Nov 10, 2010
I'm trying to finish up this project for a class and I can't figure out why its not putting in the lstbox the depreciation of the items life,
[Code]...
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Dec 11, 2011
For counter As Integer = 0 To gamecontrol.unitlist.Count - 1
If gamecontrol.unitlist(counter).isAlive = True Then
'create picturebox if not already existing
[Code].....
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Oct 22, 2010
i found that sometimes i do not get any replies in my thread.
well that's normal. but the weird thing is.
sometimes when i check back in a days after that. it still has no replies. so i didn't think much until suddenly a few minutes later i had more than 3 replies. so happy i was.
i checked it and the replies were maybe a few hours after i posted my thread. and some were a few hours ago! i don't know if something is wrong with me or the computer.
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Jun 22, 2011
i am trying to show if the computer is connected to the internet and showing the network name at the same time.example (when connected) "Connected To NetworkName"
[Code]...
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Jan 26, 2012
I have been dynamically adding user controls to my panel. This user control has a height of 105. If I have my FlowLayoutPanelwidth to only show 1 "column" of controls, it will only display 296 of them. The rest of the controls are grayed out at the bottom of the flowlayoutpanel. If I widen the flp to allow 2 "columns" of controls, I can see 592 of them, with the remainder grayed out at the bottom. I have gone in and resized the user control to make it shorter in height, which works in some respects (i.e. it works when I have two columns, but not just 1), and can go forward with this work-around.
So, I guess my question is, why does the FlowLayoutPanel behave in this fashion? It seems (based on what I saw) that there is a limit to how much data the FLP will show at one time.
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Jun 2, 2011
I have developed a small application to call several powerpoint presentations. The user will enter the powerpoint number and the powerpoint will be shown in Viewshow form. However this is not the case. The powerpoints are showing in the normal powerpoint form where the users can edit the texts in the presentation even though the powerpoint presentation are saved as viewshow. Please help with the code to display powerpoint in VIEWSHOW form:(;(If this is displayed in a form is fine, part my working code is as shown below;
Imports PowerPoint = Microsoft.Office.Interop.PowerPoint
Imports Office = Microsoft.Office.Core
Imports Graph = Microsoft.Office.Interop.Graph
[code].....
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Apr 19, 2011
In a Winform application, I'd like to animate the showing of a form a bit like when an email comes in and the notification window raises slowly from the bottom of the task bar.
I've got a few ideas involving timers and resize but they all seem complicated and/or clumsy so I wonder if anybody could suggest a simple way to do this or some magic function I could use to do it automatically.
I'm using VS 2005 and .NET framework 2
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