ok normally when i fill data i do it this way adapter.Fill(dataset, "table1") However instead of using Strings, i prefer using enums so for example i have:
public enum Tables
T1
T2
end Enum
but since adapter.fill does not provide an "integer" argument when i add i had to convert it to a string as such adapter.Fill(dataset, cstr(Tables.T1)). i find this "dirty" and was wondering if there is a better fix
Aim to Achieve : I want to have 3 different dataTables from 3 different SQL queries from 3 different places into 1 single DataSet which I will have to return form my function.I have :
Private Function getDataSet()
Dim ad1,ad2,ad3 As Object
ad1 = New Data.OleDb.OleDbDataAdapter(query1, conStr1)[code].....
I want to use the best possible implementation of above task.
How do I do this for a different dataset? I'm trying to rule out database problems so I made another one and added it, but now I need a table adapter for this one instead of the old database because it keeps giving me an error. I don't see any place to add them and I'm getting extremely angry at these databases.
View 1 RepliesIn a project, I have a dataset with two table adapters. Without warning while I was modifying one of them in design mode, I received this error. I have typed the contents of the dialog box exactly as they appear - so no additional information was given, and the error code was "-1".
View 2 RepliesI am having difficulties with Filling a dataset. It seems to be automatically assigning a datatype to the column based off of the first field of data it finds in that column. The column sometimes contains an integer, but it may also contain letters and numbers. If the first field is an integer, it says the fields in the column that contain a letter are DBNull. I'd like for the entire dataset to be formatted as a string/text type since I do not know what the values will be that I'm importing 100% of the time. How do I tell the dataset to expect a certain datatype for all columns and rows i'm going to import?
View 19 RepliesI am trying to fill a combo box using a dataset and data adapt. I am struggling too work out how to do it. I thought it would have been easy but I was wrong. i can set the text to read the first line of the colomn but nothing else. I was wondering if anyone could help me out with what I have to do. I think I have to increment inc and add a line underneath but I don't know how to do that
comboMaps.Text = datSet.Tables("TheLastShot").Rows(inc).Item("Maps")
I'm having trouble filling a ComboBox from a dataset. When the program runs, the combobox has the correct number of lines, but they all appear as System.Data.DataRowView.[code]
View 1 RepliesThe SQL string won't return data from Access. I've tested this exact SQL String in Access and it works fine.First of all, Am I getting a SQL query from Access in the proper manner?Second... should I be using a stored procedure for this? Or is making a query from tables like this a good practice? Third, if I'm doing it right, why won't Access query return and fill my dataset?These are the results I'm getting.
Connection State = 1
Tables in Dataset = 0
Where am I going wrong?
SQL:
SELECT PageSetupData.Size, PageSetupData.Category,
PrinterList.Location, PageSetupData.isPlotter, PrinterList.LocationSuffix,
PaperSizeData.PrinterName, PrinterList.HasAltPrinter, PageSetupData.SetupTitle,
[code]....
[code]when I run my program and press this button Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles exceptionsButton.Click..I have my date range within a time that I know that my dataset should produce a result, but when I put a line break in my code here: adapter.Fill(ds)and look at it in debug, I show a table value of 0. If I run the same query that I have to produce these results in sql analyser, I see 1 result. Can someone see why my query on my form produces a different result than the sql analyser does? [code]I can also verify that the variables are passing the correct values. Can anyone please assist as to why this isnt working?
View 1 RepliesI have the following
Imports System.Data.SqlClient
Public Class Main
Protected WithEvents DataGridView1 As DataGridView
[Code]......
I have the following code:
Code:
Imports System.Data.SqlClient
Public Class Main[code]....
and when I run my program, I have my date range within a time that I know that my dataset should produce a result, but when I put a line break in my code here:
Code:
adapter.Fill(ds)
and look at it in debug, I show a table value of 0. If I run the same query that I have to produce these results in sql analyser, I see 1 result. Can someone see why my query on my form produces a different result than the sql analyser does? Also here is my schema for my two tables:
Exceptions
employeenumbervarcharno 50 yesnonoSQL_Latin1_General_CP1_CI_AS
exceptiondatedatetime no8 yes(n/a)(n/a)NULL[code]......
I have a dataset in my application that I fill using tableadapters like this:
Class Form1:
sub new()
Database = new Database
end sub
Class Database:
sub new()
tblLalalalaTableAdapter.Fill(DataSet.tblLalalala)
end sub
I am told it is too early to call the tableadapter.fill method inside the constructor. If the database is unavailable now, the application won't even start. It will just kinda crash. What is the proper way to do this? When should I call the tableadapter.fill methods?
I have a varbinary(MAX) field in my MS SQL Server database. The SqlDataAdapter.Fill() method takes a relatively long time (in LAN). I want to show progress for the SqlDataAdapter.Fill() method itself, using a ProgressBar.
Note: I know how to deal with UI controls and how to implement multi-threading.
i would like to know something more relating to parameters. i have always been adviced to use parameters but i am bit confused as to how to use parameters while filling a dataset like if i am using a oledbcommand i can always use paramters but how do i parameterise the following :
dgMastDet.DataSource = Nothing
myBindingPenBase = Nothing
txtCd.DataBindings.Clear()
[code]....
i am using the above code to filter a list in the dgv as a help dialog for the selection of a master.my prob. is the now xFilter is to be typed in a regional language. so it is bound to have an ' as a character at some point or the other and if that comes in the char. then it will b giving me an error.. so how do i use it as a parameter ?
below is my code:
myCommand = New SqlCommand("SELECT VisitorID, VisitorName, Skill FROM tblVisitor LEFT JOIN tblSkill ON tblVisitor.SkillID = tblSkill.SkillID", myConnection)
myAdapter = New SqlDataAdapter(myCommand)[code]....
then it catch an error as Incorrect Syntax near". which it points to myAdapter.Fill(myDataSet, "tblVisitor") not the Select command.
I recently updated an app that I wrote to allow the clients to run the app in read only mode disconnected from the database by serializing the typed dataset, and when they are offsite/offline instead of connecting to the database the serialized dataset is loaded. This has been working great and then I hit a major snag.
A majority of the graphs and reports are based on sql views that are typed views in the dataset. Of course offlline the tableadapters cannot run the sql views.
Does anyone know a way to run/fill the view with the already loaded dataset? I can add rows clientside so I'm inclined to believe there must be some way to fill the view clientside but I've been at this for a number of hours now and not making any real progress.
When I use a command such as:
Me
.TableAdapter.Fill(Me.SomeDataSet.Table)
I am going out to the database, gathering the requested information and filling the dataset. Therefore, everytime I add a query to a table adapter, it is also going to the database to get the information. So, my question is, how do I fill a table in a data set with all the records in the database table and then, filter the information I've already collected in the dataset without going back out to the database again?
I am designing a form to Enter new City Name list where i accept following fields
CityName, District, State, Country, Pin.
because a State names and Country names can be retrived from earlier entries, i want to allow user to select desired name from a list in combo box or a list in Auto Complete Custom Source for text box, to do this i have added a Table Adapter to underlying DataSet having Query "SELECT DISTICT STATE FROM CITY ORDER BY STATE".
Now, how do i use this Table Adapter to fill the ComboBox List without binding
And also Custom Source List for TextBox.
I recently created a test VB.NET 2008 project with an Access database and it seems to work okay. It uses a dataset and table adapters. I'm aware that some people don't like table adapters. I'm willing to learn another way if it's better. Should I do this or continue using table adapters?
View 2 RepliesI have a sql server database file which I have connected to a web service I am writting I have created a table adapter in a datase.t I have created a web method which has parameters for the fields in the database
<web Method> _
function add_record(byval a as integer , byval b as String)
dim ds as dataset
[code]......
I want to write a small program to just enable/disable two network adapters. I searched over google and I found a few C# codes but didn't understand anything. I heard something called WMI. It seems they are other ways like enabling registry (which sounds wierd for me) or using command lines.
I really don't know which way should be used althought I didn't find any code to those either. something that works in win xp & vista & seven.
Because user want two switch between two NIC by enable one and disabling another one, I think I should first get a list of network adapters, then let user specify. I know It can be done easily by going to the network settings directly and do it by right clicking. But they want to do it through a program with single click.
Edit: I was able to get a list of adapters using WMI, Here is the page If someone wanted to take a look.
You can iterate the controls collection and me.components.components to find certain objects, but nowhere can I find where a form keeps a collection of its early-bound table adapters. When you add them in at design time and bind them to a control, it shows them on the design window, and it creates them in the design.vb file, and they're available as a property of your form object... but I can't find a way to browse through them and pick one in code, like you can with the control collection (I.E. me.controls.Item("controlname")).[code]...
View 1 RepliesI'm using visual studio 2010 to build my application and SQL server 2005 to store the data. I created a table adapter, dataset and binded the controls to my already made formThing is, i'm trying to insert a new record into the database and it won't work! I can fill the form with a record from the database and update it so i know its definitely connected correctly. Everytime I try to insert a new record whether its through a table adapter or manually, I just can't seem to get it to automatically save to the database.Ive put this under the save button
Private Sub SaveBtn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SaveBtn.Click
Dim CustomerRow As accountingdbDataSet.CustomerRow
[code].....
i am working on a project that stores records from a windows form to an access datbase.But i am having problems with the update statement.I have a form with the fields bound to datatable called LeedsHubInfo .Dataset called LeedHubInfoDataSet1.
Private Sub cmd_save_Click(ByVal eventSender As System.Object, ByVal eventArgs As System.EventArgs) Handles cmd_save.Click
' Create a new row.
Dim newJobRow As leedHubInfoDataSet1.LeedsHubInfoRow
newJobRow = Me.LeedHubInfoDataSet1.LeedsHubInfo.NewLeedsHubInfoRow()
[code]....
On the update line i get an exception thrown up "A first chance exception of type 'System.Data.OleDb.OleDbException' occurred in System.Data.dll" I thought inserting a record into a database would be easy but i seem to be naking a right pigs ear of it?
Using; - vb2008 Express, data on ACCESS 2003, objective; - to update a separate table not on the original query.From what i have gathered i need to add a second table adapter to make the changes to a related field in another table. Since i already have the 1st table adapter the second does not appear as easy as the second (dragn the data set over).
So i suppose i need to create the second table adapters programmatically? [URL]..I see that because they are not nested they need to each be declared.. right? If so that is where my issue lies. I'm having a problem with how to declare them both now that there must be two.
Im currently making a program. It loads data from database fields into an combo box. Everything works so far, It just seems to be a mess. Do i need to have all the datasets and data adapters? or can i get away with just using 1 of each. It seems like im doing it wrong, and although it works it seems like a difficult and messy way of doing it.
Also i would like to assign the firshermenID to a variable depending on the fisherman name that is selected in the combo box. When button is pressed: id = fishermanID of the current fisherman (cmbFisherman.text)
[Code]...
I would like to know if it is possible for a Table Adapter to reference a query as opposed to a table. Currently my Table Adapter references a table in my SQL database, but I wanted to know if it was possible to have it reference a query, which selects a table from another database?
View 5 Replies I have a project that I used the 'Connect to Database' tool to set all the bindings and table adapters, etc. Currently the database is housed in the same directory as the exe. I was asked if I could have the database location be a dynamic value. My question is when you set up a project to work with a database using the 'Connect to Database' tool, how can you change its location?
I found this setting:
ASRDBConnectionString
But its read only.
Within that setting is text that says: DataDirectory
So thought that might be a variable to change somewhere....but can't find it.
I have a problem that hopefully someone can shed light on. My OleDBdataadapters and OledbTableadapters have gone on strike In a simple vb.net 2005 pro project I have an Access 2003 .mdb with 2 tables each with 1 primary key and all other fields allowing zero length and not required. The database (not read only) is included in the project (see connection string below which works because data is presented on bound forms).
Although each table's data is displayed on one of 2 bound windows forms, it just refuses to update, add new or delete. I've deleted and recreated forms, etc, using wizards and just run time code but the problem is still there. I can change data manually in the mdb. The code below refers to a site mdb table and was wizard generated. I added an update query to the TableAdapter using the wizard, see sql below.
[Code]...
I have inherited an application at work that someone else started creating, right now about 1/2 of it is functional and is in use. My problem is that it is all done in 2.5 ?? and I am trying to step through it all to figure out how it works. I have always created my own binding sources, adapters and data tables.
One of the things I need to do is add a field to the fm_fieldman_master data table. I add the field in the db (SQL Server 2005)table, I come into VS and refresh the datasource, I then add the field to the fm_fieldman_master data table and the Fill,GetDAta() query I go into the designer and create all the attributes for the combo box
[Code]...