I am using VB 2008 frountend & Access Databases for my backend.When i make changes to Database such as Change In Field Name, Change In Data Type, Change In field size Addition of new Fields, Deletion of old fields, ReOrdering fields names I use to reconfigure DataAdapter in dataset to take those changes in effect, however some changes took place where some other doesn't.get those changes in effect in right order.
View 1 RepliesI have a dataset (WW1Dataset) with one data table(WW1).(database used in an access database) I'm trying to filter the dataset e.g a user wants to filter by a chosen surname (SurnameTextBox.text) so the datset is filtered to display only those records wherethe surname column in the dataset matches SurnameTextBox.text.
View 1 RepliesI have a problem saving a dataset which contains rows that i have imported from another dataset. i can successfully view the imported rows in a gridview but i cannot commit the rows back to the database.
View 2 Repliesdoes VBasic allow a MS Access Database DataSet create a Stored Procedure or will it only allow SQL Database DataSet create SP...
View 4 RepliesI created a SQL database using the migration tool.I am converting my access forms to VB.net (VS2008).I am wondering if I create a single dataset in studio to the database or do I create a dataset for each form (query)? I am trying to determine what the best solution is. Many of my forms have drop downs that are populated using queries from tables.
View 3 RepliesI create one typed dataset by dataset designer in VS2008. How can I change this dataset to shared typed dataset?
View 6 RepliesI am using Visual studio 2008 trial edition and SQL server to make a VB.NET app. I have a windows form which i use to add information to a database, by using a dataset. I recently increased the precision of a column using SQL server manager. I went from numeric(8, 4) to numeric(10, 6). I have my datatable's column set to system.decimal with a maxlength of -1. The problem is when i try and add a row using my program, the column now truncates the values as if it was still set to numeric(8, 4). I have checked my controls to make sure they are not truncating. I am currently creating a row and filling it with values and then adding it to the dataset and then updating the dataset. When i look at the locals during run time the row has the correct truncated value before and after i add it to the dataset but the truncated value is getting added to the database. I have tried manual entering data that is to large for the numeric(8, 4) and the database excepts it. It seem like the dataset does not realize the database has changed.
View 4 Repliesim using a Dataset which loads XML from xml file on form startingit has one more form in which button click event adds a table to dataset but while adding it , compiler gives error like" DataSet loaded from XML , editing is not possible (like that)"
View 2 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.
I had a dataSet which link to a database. I need to add one field inside the database, After adding the field, how can I update and link it to the dataSet?
View 4 RepliesI built my programs in VB 2010 using a temporary dataset on my computer.I am not ready to have them address the dataset on the server, but when I call up the dataset to change the path, the full path is light gray and I can not change it.If I delete the dataset, it will ruin all of the forms that automatically populate from the dataset. Is there an easy way to change the full path of a dataset?
View 9 RepliesI have a table in my database that the fields of it are not fixed in number and name. in fact this table is the statistical report of other sections of my database.I want show this table in a data Grid View after finish calculation. I created a dataset and connected it to my Data Grid but the number of columns and names of them are not flexible and don't change according new statistical reports that would be available in my table.Is there any way to update my dataset and recreate it according to my new information in my table and show it correctly with Data Grid?
View 1 RepliesAutomatic update Dataset after change in Access
View 8 Repliesin my project i use odbctabaleadapter and connect to dbf file (connection string is "Dsn=test;dbq=C:;defaultdir=C:;driverid=533;fil=dBase 5.0;maxbuffersize=2048;pagetimeout=5) to convert data from dos to windows but it seem befor display data in datagridview dotnet converted data to unicode
if its true , can set System.Text.Encoding to default in tabaleadapters ?
when i convert from txt file as this code convert process is complete
Public Function stowin(ByVal inFile As String) As String
Dim fileSize As Long
Dim en As System.Text.Encoding
[Code]....
I have a ComboBox with its datasource being a dataset from a SQL Server database.
The width of its columns are relative to the width of the name of the columns. I would like to increase that width in order to see the content properly and not cuted.[code]...
In my application, I have a dataset, automatically created by the VB, called "Batabase1Dataset".This dataset, will "connect" to the file Database1. sdf in the directory of my solution..Is some moment of the program, I need the dataset will read the data from the file "c;estdatabase1.sdf", instead the file: "....MyAppdatabase1.sdf"..How can I change the path of the dataset reading?
View 3 RepliesI have a dataset that I created through the wizard, to pull the data and their types from the database tables and prevent some of the headaches of creating the tables and data types individually.I am looking for where the database connection for the dataset is defined at so I can change this. The reason being is I have added a database connection dialog where the user will select the location of the database server and I am wanting to pass the connection string from what the user selects to the dataset so the dataset uses this as its connection string instead of the default one I defined in the wizard.Where is this defined at so I can change it?
View 6 RepliesCan someone please help me create a very very simplistic sample page as the chat page included is too coomplete. something as simple as detecting a change in the database and displaying the word "change" on screen in realtime for any client connected.and I tried creating a global.asax file into which I added in the line mentioned in the link above, but it does not seem to like the word "Setup" in the line [code]
View 2 Replieswhats wrong with my code?if i change the item from the combo box..the textbox not change or has an error?
conn = New MySqlConnection()
conn.ConnectionString = "server=localhost; user id=root; password=12345; database=gigzta; allow zero datetime=no"
strsql = "SELECT accNo FROM accinfo WHERE (completename LIKE '%" & ComboBox2.Text & "%')"[code].....
I'm wondering if its possible to change the query that grabs the data from the dataset at runtime, in order to produce a report based on different criteria.My project doesnt use dataset, and I've had to make one purely for the reports I'm currently using the mySQL .net connector calling everything via code, as well as the query I want to make at the time.Also, I don't want the report to be embedded in the application but be a seperate file as the report may change frequently (the layout of it)I've tried setting the build action as none, but I just get an error in the intermediate window.
View 1 RepliesI 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 RepliesI need to be able to change the connection string of a strongly typed dataset at runtime. I have gone into the settings.vb page and written this code:
Namespace
My
'This class allows you to handle specific events on the settings class:
' The SettingChanging event is raised before a setting's value is changed.
' The PropertyChanged event is raised after a setting's value is changed.
' The SettingsLoaded event is raised after the setting values are loaded.
' The SettingsSaving event is raised before the setting values are saved.
[Code] .....
The way the code is suppose to work is that when a user logs in, the application gets the user's site ID (gvUserSite), then uses that to set the connection string. But when I log on with a SiteID of "21" it always uses the Case Else value. Also when I set breakpoints in settings.vb the application never stops on the breakpoints I set during runtime. As if the breakpoints were never set. Also if I put any code in the "MySettings_SettingChanging" in settings.vb I get a runtime error
"The debugger cannot continue running the process. Process was terminated.
Update problem : When i check DataSet.HasChanges() it return false, unless position change (move next or previews) it return True.
After position changes every things is OK and updated!!
this is the
PHP
Private MyAdapter As New OleDbDataAdapter
Private MyDataSet As DataSet
[Code]....
the code is below. the system said me that the insert into sql syntax error
Dim dbProvider As String
Dim dbSource As String
Dim constr As New OleDb.OleDbConnection
[Code]....
If i make changes to tables in a dataset, then want to save those changes to the actual database, how do i do this? I know that the dataset is just an "in house" virtual copy of the real database. I believe i need to use a commandbuilder but is there an easy way to do it, other then using an sql statement? If i spent the time making the changes to the dataset, why redo the work on the actual table? here's what i have, after the datasets have been changed:
[Code]...
I just want to ask. Using getChanges method in vb.net only get the changes on the dataset not on the table in database?for example I fill a dataset from a table in database.So there is a table in my dataset. There has been a changed in my table in database for example an added row.So there is no way in my dataset to determine this change because it has filled the original data.How can I determine the changes in my database table?
View 1 RepliesMy Visual Basic 2008 can insert a new row to a dataset, but the dataset does not insert new rows into the actual Access 2007 database. The database remains unchanged and there are no error messages. How can the dataset write the new row to the database? [code]
View 1 RepliesSo I'm not familiar with much vb code but I was hoping someone my spell out something pretty generic as far as updating a database. I'm pretty sure I've successfully edited rows but when i'm using my database update i get an error, probably just incorrect syntax. This is what I have so far...
[Code]...
It seems that there is no way to preserve changes to a DataSet made with the Designer when there is a change to the database. The only way to get the Designer to rescan the database to incorporate a change is to delete the DataSet and then recreate it. This of course blows away all the mods you've made in the designer. There should be a way to have the Designer rescan the database while preserve all the mods that have been made in the Designer. Otherwise the Designer is essentially useless after the initial generation of code. What am I missing?
As a workaround, I tried incorporating the changes to the database by making the same change in the Designer rather than recreating. However, clearly no one tested this is it only partially regenerates the code based on the change. Try changing a field from nulls not allowed to allowed. This works when you add data to the DataTable, but bombs as soon as you update the database, because the DataSet code does and the database code doesn't get regenerated.
I have an excel worksheet that has 20 columns of data, and thousands of rows. My goal is to take every row, and every column and insert it into a dataset.Which I have successfully done here:
'exporting the data from the excel workbook into a dataset
Public Sub Export_From_Excel()
Dim objApp As Excel.Application
[code]......