I have an access database with 5 tables.I want to fill a dataset with the entire contents of the database.Why can't it roughly look like this?[code]Instead I'm having to create an adapter for EVERY table, tab the table name (why?), fill the schema, and then fill the table.
View 1 RepliesI want to create a VB program for my final year project,the contents of which can be editable by the user, for example when new information becomes availabe it can be easily added. Now,I thought that this could be done using the text box, although it doesn't seem to be possible.
I plan to use a database to hold the initial information.Could I achieve program 'updatability' in a fairly easy manner?
I want to populate the datagridview with the data entered by the user in the textbox(Without saving the data in the database)
So i decided to create a DataTable with the appropriate schema and assign it to the DataSource of the grid but i cant create the schema......
I am using oracle and trying to create a datagridview but when i try to create the dataset i get the error "could not retrieve schema information for table or view" stating my database and table name. I am using the Oracle client not the OLEDB as i have always used that and had no problems. I am using Oracle 11g.
View 6 RepliesOn the server side of my application I have a function like this:
public function GetDS as MyTypedDS
Dim dsRetVal as new MyTypedDS
'Make fantastic things with the dataset
return dsRetVal
end function
On the client side I call this function through a generated "service reference":
Dim ds as Reference1.MyTypedDS = myRefInst.GetDS
How can I disable schema serializaion of the typed dataset to reduce the traffic?Is it enough to set the SchemaSerializationMode of 'dsRetVal' to ExcludeSchema before returning it? Or is this option ignored by WCF?
Ok, I know this has been asked many, many times but I haven't seen the correct answer yet. When the database schema changes how do you update the dataset designer to reflect those schema changes without wiping out the whole dataset and starting over?
View 1 RepliesI have a small dataset which has most of its schema defined at design time, but I add a few columns to one of its tables at runtime. My problem is how do I reset those changes? he dataset is not linked to any datasource. It just has its own table which I "manually" populate. The static columns have been added to the datatable at design time. However, I add a few columns as runtime based on a list of categories. Like this:
[Code]....
The dataset is used in a small dialog that pops up within my application. I add the dynamic columns when the dialog is opened by using the Load event. Everything works great the first time. But if you close the dialog and reopen it, there are problems. My startup routine tries adding the dynamic columns again, but an error is thrown saying the column already exists. I have tried a lot of things and did some reading but I can't figure out a way to reset the dataset when the dialog is closed. The only solution is to close the whole application and reopen it. I have tried the following in the Leave event of the dialog form:
[Code]....
I have tried everything I can to get beyond this error which shows below as <<<<< error here. It is trying to fill a dataset from a data adapter. If I change the SELECT statement to just SELECT * FROM xTable I get the correct number of records in each table. But anytime I try with a more complex statement I get the error message shown below which indicates System.Data.Common.DbDataAdapter.Fill(DataSet dataSet. I've completely erased all data and entered a new set of test data so I know there is no problem with relationships. Each table has primary key which is foreign key in other table. IS there something wrong with the Imports section: Imports System
[Code]...
I need to pick all data in my application from my database and use it in my form
my question : how to pick all data in my application then i use it
How do you use a parameterized query to make the (last_name, first_Name) appear in the same combo box? I know how do drag them over from the DATA SOURCES menu, but I am trying to combine them. So instead of it being two separate combo boxes with both last_name and first_name), it want it to find the the names with first and last name in the same combo box.
View 2 RepliesI have a datagridview with 3 columns.
Now I need to fill the datagridview's datasource with 3 arrays.
Example:
(column1) Username- Joe - Mark - Thomas
(column2) Password - Joe - Mark - Thomas
(column3) Activiated - Yes - No - Yes
Then after i split what should I do? Should I add 3 arraylists in a class or should I use structure and how?
Employee emp = new Employee();
comHandledBySQt.DataSource = emp.GetDataFromTable("1");
comHandledBySQt.DisplayMember = "FirstName";
The above code displays drop list of employees first names in a combo box. I want first name and last name to be displayed. How can i do it?I tried to include two columns FirstName and LastName as below but didn't work.
comHandledBySQt.DisplayMember = "FirstName" + " " + "LastName";
how do you add information from another datasource into a cell in a data grid which has the relevant information i.e order_bindingsource grid which has the information order id, item id, quantity and cost per item.
The item id I have linked to the Productbindingsource but I also need the information to be shown cost per item which is in data source products.The item id is a drop down box with the items displayed what I need is when an item is selected I need the price to show up in the cost per item box.
I have a datasource linked to a table in a database.When I wnated to display this data on a form, I just dragged the datasource onto the form and it did everything for me, including the code to fill it;
Me.ProjectFileTableAdapter.Fill(Me.ProjectFileDataSet.ProjectFile)
My problem, is that this program will have multiple users, and I don't other users to be able to see each others data. So the problem with the above statement is that it fills the table with ALL the data in the datasource. How can I make it only display data that is for a specific user?Here's the code that is used to fill the tableadapter:
Private
Sub
frmViewCurrent_Load(ByVal[code].......
I am connecting my VB application to Oracle Database. I need to configure the Data Source in the app.config.ng know which section do I define my UID, PWD and DSN and what functions do I use to read this information. Can I also write back this information through the application.
View 1 Replieshow do you add information from another data source cell to a to another data source cell in a different form
View 1 RepliesI have a vb.net window application project that connect to Access database.
I use dataset for all Forms and Reports.
Now I would like to change back end from Access database to SQL Server 2000 database.
I change the connection string(Data source, Data Provider etc)to connect to SQL Server 2000.
But it is not convenience bcos Dataset Designer codes are still connect with OLEDB Provider instead of Sql Client Provider.
So I can't do my application with SQL Server database.
my question is, is there a way to filter records in the dataset and use that records to fill in the datagridview? for example, a datatable (with 3 columns: ID, StudentName, Gender) is filled with list of students. i have two datagrids in the form namely DatagridView1 and Datagridview2. DatagridView1 is where the the list of student where Gender is equal to M and DatagridView2 is where the the list of student where Gender is equal to F.in my current solution, i am using a loop.
[code]...
is there a way without using a loop?
I am working with a Windows Application that was developed in VS2008 on a SQL2000 database.I am trying to determine the Datasource of a row in an existing DataSet. I have narrowed it down to 2 possible tables that each have a row with the same identical name.
View 8 RepliesVisual Studio 2008 Express Edition.I have a have a DataSet, created from (part of a) Access database. I have tow tables in it (say A and B). When I change something in table A, I need to get data from table B to complete table A.My approach was to use the RowChanged event inside a (Partial) Class of table A. For that to work however table B needs to be shared. (I don't like to refer to an instance.) I got it to work by changing the DataSets designer code, but don't want to do it all over again when the code is regenerated for some reason. So: would there be any way to have these tables shared by default?
View 3 RepliesI have a php web service that I can call from a php client. I need to call this web service from a vb.net application. When I try to add a reference to this web service I get this error:The root element of a W3C XML Schema should be <schema>here is the top of my wsdl file:
<?xml version="1.0"?>
<!-- partie 1 : Definitions -->
<definitions name="raidService"
[code].....
I made an application that was used by one person only, but now my boss told me that this application it'll be used by all company.I made the application with a dataset that have the datasource in a access database that's installed with the application. The user can add, delete and change values in the database, so i had to put the database in a sql server to everyone see the changes.There's someway to change the dataset datasource/connection string?
View 9 Repliesget information from a notepad document that is created automatically in another program that I use into a ms word form.What i Have,I have made a ms word form with text fields. i need to write a code in vb to get information from that notepad document to fill the information on my word form.
View 1 RepliesAim 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.
I have a need to assign values from my dataset to a variable but when i use string (which its normally text) and the item in that row of the dataset is empty it tells me that conversion from DBnull to string is not valid
View 2 RepliesI think the problem arose because of Windows 7, but when I was at school the program worked. The program fills in the text boxes with information from Microsoft Access. However, my laptop has Windows 7, and when debugged, the information doesn't fill in the text boxes like before. Also, for added information, the school's computers run with Windows XP.
View 2 RepliesI have a listview with multiple columns that I need to fill out of information gathered from user inputs in various textboxes I use to have a code for Windows Forms Application as below
[code]...
This works fine.However,when I shifted to WPF and tried to reproduce EXACT same code,it tells me Too many arguments to 'Public Sub New()' Alternatively,
Basically I have about 15 data that I want to display in different columns per row in a listview.I need it in such a way I can sort, edit, delete, insert,etc.With my previous methods, I could do those fine, but in wpf im stuffed...
I want to send a PDF form from my program.Sending the form is not the problem.But i would like to fill in the Subject, and some detail information in the E-mail automatically.
View 5 RepliesI've added a Data Source to my project and a table from that Database (SQL 2005)
It is a rather large table and takes a LONG time to load the form. I was thinking of loading the auto-generated "Fill" statement in a Backgroundworker, but it doesn't seem to be doing anything. I have the Fill statement in the DoWork event, but it never "finishes" it seems. My BindingNavigator stays at 0.
I looked at jmc's sig link and everywhere I look, it seems like I'm going to have to iterate one at a time, but how can I do this for a bound datasource?
i have the following code to fill two comboboxes using one dataset:
Private Sub sub_cbo_type_load()
Dim ds As New DataSet
ds = cls.cbo_type()
[Code].....
the problems is: whenever the index is changed in one combobox, it's automatically changed in the other one too.